Best Air Bags For Semi Trucks: Compare Truck and Cab Fits

Best Air Bags For Semi Trucks

A strong semi-truck air bag replacement should match your existing part number and suspension position, with durable construction suited to the truck’s demands. These options cover Freightliner, Volvo, and Kenworth chassis applications, plus separate cab-sleeper and trailer fits, so the right choice depends first on where the bag goes. Torque’s TR9780 leads this selection for its reinforced construction and clearly listed dimensions, while other Torque models and FLOVENTIS replacements cover different cross-reference numbers.

The lineup also includes a Volvo-compatible MVPTruckParts set and cab-focused choices for Freightliner and Peterbilt. Use the listed reference numbers as a starting point, not a substitute for confirming fitment: truck model, suspension location, and the correct part number matter before ordering.

Torque TR9780 is the leading pick for a semi-truck suspension replacement when its cross-reference numbers match your rig. It is listed for Firestone W01-358-9780 and Hendrickson C-28929 and S-28929, with 4.5–5.00 mm rubber, reinforced 4140-grade steel studs, composite pistons, and an 18-inch extended height. Confirm the required part number and suspension position using your VIN before buying; the best-listed specifications cannot compensate for an incorrect fit.

Our Top Picks

Torque TR9780Best Overall

Torque TR9780

Freightliner replacement with 4.5–5.00 mm rubber, 25% stronger 4140-grade steel studs, and listed extended and compressed heights.

View on Amazon
Torque TR8468Best Volvo Fit

Torque TR8468

Volvo 21132005 replacement with reinforced studs and 4.5–5.00 mm rubber; dimensions include 21-inch extended and 6-inch compressed heights.

View on Amazon
Torque TR8864Best Kenworth Fit

Torque TR8864

Kenworth C81-1011 and C81-1013 compatible listing, with 4.5–5.00 mm rubber, reinforced studs, and a stated three-year warranty.

View on Amazon

Compare the Air Springs by Fit and Application

#ProductWeightBuy
1
Torque TR97801. Torque TR9780Best Overall
13 lbView on Amazon
2
Torque TR84682. Torque TR8468Best Volvo Fit
15 lbView on Amazon
3
Torque TR88643. Torque TR8864Best Kenworth Fit
14 lbView on Amazon
4
FLOVENTIS 1V97804. FLOVENTIS 1V9780Freightliner Alternative
—View on Amazon
5
MVPTruckParts Volvo Air Spring5. MVPTruckParts Volvo Air SpringVolvo VNL replacement set
38 lbView on Amazon
6
FLOVENTIS 1V97816. FLOVENTIS 1V9781Freightliner rubber-and-steel pair
17 kgView on Amazon
7
KJYDXYS Freightliner Air Spring7. KJYDXYS Freightliner Air SpringFreightliner reinforced pair
—View on Amazon
8
KEIYSHOLCK Cab Sleeper Air Spring8. KEIYSHOLCK Cab Sleeper Air SpringBest Freightliner Cab Fit
—View on Amazon
9
Torque TR70369. Torque TR7036Peterbilt 379 cab spring
2 lbView on Amazon
10
Torque TR997810. Torque TR9978Trailer suspension replacement
15 lbView on Amazon

Detailed Reviews: Best Air Bags For Semi Trucks

Torque TR9780

#1 · Best Overall

1. Torque TR9780

  • Weight: 13 lb

Best for: Freightliner dimension match.

Why it ranks #1: Freightliner replacement with 4.5–5.00 mm rubber, 25% stronger 4140-grade steel studs, and listed extended and compressed heights.

A 23-inch extended height and 8.75-inch compressed height define this two-bag Torque set for Freightliner 16-13810-000 replacements. Those measurements help buyers compare the spring’s working envelope with the existing assembly, while permanently engraved part identification makes the reference easier to read on the rubber.

The stated 9-inch top plate and 10.62-inch piston width provide useful dimensions for checking the replacement against the truck’s existing hardware. Torque pairs those measurements with 4.5–5.00 mm rubber and stronger composite pistons, supporting a robust replacement assembly. The rubber’s engraved part number assists identification during later inspection. Listed cross-references cover several Freightliner and related numbers, so confirming the exact reference remains important before fitting these bags.

Pros
  • Two air spring bags included
  • 23-inch extended and 8.75-inch compressed heights specified
  • Part number permanently engraved on the rubber
  • 4.5–5.00 mm rubber and stronger composite pistons
Cons
  • Fitment is limited to the listed Freightliner and cross-reference applications.

Skip it if you need Volvo 21132005 replacements; Torque TR8468 lists that Volvo reference and corresponding spring dimensions.

Freightliner owners matching the listed replacement numbers and dimensions can use this pair as a clearly identified replacement. Compare its heights, plate width, piston width, and application references with the truck’s existing spring before installation.

Full product details
BrandTorque
Item Weight‎13 pounds
Item model number‎TR9780
Manufacturer‎Torque
Part Number‎2 x TR9780
Model‎TR9780
Package Dimensions‎20 x 20 x 12 inches
Special Features‎25% stronger 4140 grade steel studs., 4.5 – 5.00 mm trick rubber that exceeds OEM requirements., Highest leak test ratio after final assembly., Stronger composite pistons.
Additional InformationImportant Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Listed on Amazon as: Torque 2 x Air Spring Bag Compatible with Freightliner 16-13810-000

View on Amazon
Torque TR8468

#2 · Best Volvo Fit

2. Torque TR8468

  • Weight: 15 lb

Best for: Volvo 21132005 replacement.

Why it ranks #2: Volvo 21132005 replacement with reinforced studs and 4.5–5.00 mm rubber; dimensions include 21-inch extended and 6-inch compressed heights.

A 21-inch extended height and 6-inch compressed height define Torque’s two-bag replacement for Volvo 21132005. Those measurements, paired with Firestone W01-M58-8468 and Goodyear 1R12-654 references, help Volvo owners identify and compare the intended spring.

The 9-inch top plate and 10-inch piston width give additional physical checks for comparing the replacement to the existing assembly. Torque combines this dimensional information with 4.5–5.00 mm rubber, 25% stronger 4140-grade steel studs, and stronger composite pistons. The part number is permanently engraved on the rubber, supporting identification during maintenance. Its listed Volvo and cross-reference numbers make application checking central before installation.

Pros
  • Two air spring bags included
  • 21-inch extended and 6-inch compressed heights listed
  • 9-inch top plate and 10-inch piston widths specified
  • Thick rubber, reinforced studs, and composite pistons
Cons
  • The listed application is limited to the Volvo and cross-reference numbers provided.

Skip it if you need Freightliner 16-13810-000 replacement bags; Torque TR9780 lists that Freightliner application and corresponding dimensions.

Volvo owners matching 21132005 or the listed Firestone and Goodyear references can use the stated dimensions to check this pair. Confirm the part number and measurements against the existing spring; the application references do not indicate universal truck fitment.

Full product details
BrandTorque
Item Weight‎15 pounds
Item model number‎TR8468
Manufacturer‎Torque
Part Number‎2 x TR8468
Model‎TR8468
Package Dimensions‎20 x 20 x 12 inches
Special Features‎25% stronger 4140 grade steel studs., 4.5 – 5.00 mm trick rubber that exceeds OEM requirements., Highest leak test ratio after final assembly., Stronger composite pistons.
Additional InformationImportant Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Listed on Amazon as: Torque 2 x Air Spring Bag Compatible with Volvo 21132005

View on Amazon
Torque TR8864

#3 · Best Kenworth Fit

3. Torque TR8864

  • Weight: 14 lb

Best for: Kenworth C81-series replacements.

Why it ranks #3: Kenworth C81-1011 and C81-1013 compatible listing, with 4.5–5.00 mm rubber, reinforced studs, and a stated three-year warranty.

A 24.50-inch extended height distinguishes Torque’s two-bag set for the listed Kenworth C81-1011 and C81-1013 applications. The 7.80-inch compressed height adds a second concrete measurement for comparing the spring’s range with an existing assembly before replacement.

The 9-inch top plate width and 8.05-inch piston width give buyers two installation-relevant dimensions to check against the truck’s current hardware. Torque combines those dimensions with 4.5–5.00 mm rubber, 25% stronger 4140-grade steel studs, and stronger composite pistons. The rubber’s permanently engraved part number supports identification during inspection, while the listed Peterbilt, Firestone, and Goodyear references help verify the intended replacement family.

Pros
  • Two air spring bags included
  • 24.50-inch extended and 7.80-inch compressed heights listed
  • 9-inch top plate and 8.05-inch piston widths specified
  • Thick rubber with reinforced steel studs and composite pistons
Cons
  • The supplied application references do not establish fitment beyond the listed replacement family.

Skip it if you need the Freightliner 16-13810-000 application; Torque TR9780 lists that replacement and its spring dimensions.

Buyers replacing a spring in the listed Kenworth C81-series or matching cross-reference applications can use the supplied dimensions to screen fit. Confirm the reference and physical measurements against the existing assembly; the stated dimensions are specific to this model.

Full product details
BrandTorque
Included ComponentsAir Springs
Item Weight14 pounds
ManufacturerTorque
Part Number2 x TR8864
Manufacturer Warranty Description3-year manufacturer warranty
MaterialSteel, Rubber
Model NumberTR8864
Additional InformationImportant Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Listed on Amazon as: Torque 2 x Air Spring Bag Compatible with Kenworth C81‐1011, C81‐1013

View on Amazon
FLOVENTIS 1V9780

#4 · Freightliner Alternative

4. FLOVENTIS 1V9780

Best for: Freightliner 1V9780 replacement.

Why it ranks #4: Freightliner 16-13810-000 cross-reference and rubber-and-steel construction make it a relevant alternative for that specific fit.

FLOVENTIS’s 1V9780 pair uses rugged rubber and iron for Freightliner air ride applications, with Firestone 9780 and Freightliner 16-13810-000 among its listed references. The specific cross-reference set helps separate this model from other Freightliner spring variants when identifying a replacement.

The rubber-and-iron construction is described as providing consistent performance and a more consistent wear surface, linking material choice to service use. FLOVENTIS also lists imported high-density rubber and better load performance than a normal air spring. Its Freightliner, Firestone, and ContiTech references provide a way to check the application, while the listing supplies no spring height or width measurements for buyers comparing physical dimensions.

Pros
  • Two air spring bags included
  • Rugged rubber and iron construction
  • Freightliner 16-13810-000 reference listed
  • Firestone and ContiTech cross-references provided
Cons
  • The listing gives no spring dimensions for physical comparison.

Skip it if you need height and width specifications before choosing; Torque TR9780 supplies those measurements for its Freightliner replacement.

Freightliner buyers whose existing spring matches 1V9780 or its listed cross-references are the intended audience. The material and load-performance claims may suit a replacement search, but the lack of dimensions makes reference-number verification especially important.

Full product details
BrandFLOVENTIS
Included ComponentsSprings
ManufacturerFLOVENTIS
Part Number1V9780
Manufacturer Warranty Description1 Year
MaterialRubber, Steel
Model Number1V9780

Listed on Amazon as: 2Pcs Air Spring Bags for Freightliner Trucks 1V9780

View on Amazon
MVPTruckParts Volvo Air Spring

#5

5. MVPTruckParts Volvo Air Spring

  • Weight: 38 lb

Best for: Volvo VNL replacement set.

Why it ranks #5: Volvo VNL replacement listing includes 4.5–5.00 mm rubber and 25% thicker 4140-grade steel studs.

A four-bag set pairs 4.5–5.00 mm rubber with 25% thicker 4140-grade steel studs, giving Volvo VNL owners a replacement option focused on reinforced construction. Its listed cross-references include Volvo 8468 and 21132005, helping identify the intended suspension application before ordering.

The thick rubber is specified as exceeding OEM standards, a construction detail aimed at handling demanding road use. Reinforced composite pistons work alongside the thicker steel studs, supporting a sturdier spring assembly. The listing identifies Volvo VNL trucks and gives several replacement references, including Firestone W01-M58-8468 and Goodyear 1R12-654, so buyers can compare application numbers. At 38 pounds for the item, the four-bag set is substantial to handle during storage or installation.

Pros
  • Four air spring bags in the set
  • 4.5–5.00 mm thick rubber
  • 25% thicker 4140-grade steel studs
  • Reinforced composite pistons
Cons
  • The listed vehicle application is limited to Volvo VNL trucks.

Skip it if you need Freightliner-specific bags; FLOVENTIS 1V9781 lists Freightliner applications and cross-reference numbers.

Volvo VNL owners replacing a matched group of springs may value the four-bag quantity and reinforced materials. Check the listed replacement numbers against the truck before buying; this application is not presented as universal across semi-truck makes.

Full product details
BrandMVPTruckParts
Item Weight‎38 pounds
Manufacturer‎MVPTruckParts
Part Number‎MVP23-23122

Listed on Amazon as: 4X MVPTruckParts Air Spring Bag Compatible for Volvo VNL Trucks Replaces 8468, 21132005, Firestone W01-M58-8468, 1R12654, 1R121049

View on Amazon
FLOVENTIS 1V9781

#6

6. FLOVENTIS 1V9781

  • Weight: 17 kg

Best for: Freightliner rubber-and-steel pair.

Why it ranks #6: Freightliner-focused option cross-referenced to Firestone 9781 and Goodyear 1R12-603, made from rubber and steel.

Rugged rubber and iron construction are the defining materials in FLOVENTIS’s two air spring bags for Freightliner trucks. The listed 1V9781 reference and cross-references, including Firestone 9781 and Goodyear 1R12-603, give buyers concrete identifiers for checking a replacement application.

The rubber-and-steel build is described as providing consistent performance and a more consistent wear surface, making the material choice relevant to ongoing suspension use. FLOVENTIS lists Freightliner compatibility and several matching references, including ContiTech 910S-16A382 and Freightliner 681-320-0017. Those identifiers can help narrow the application, but the listing does not provide spring dimensions; buyers therefore need to rely on matching the reference number rather than a dimensional comparison.

Pros
  • Pair of air spring bags
  • Rugged rubber and iron construction
  • Freightliner truck application listed
  • Multiple reference numbers supplied
Cons
  • The listing provides no spring dimensions for dimensional fit comparison.

Skip it if you require stated spring heights for comparison; Torque TR9780 lists extended and compressed heights for its Freightliner application.

Freightliner operators matching 1V9781 or its listed cross-references may find this pair useful for a reference-number-based replacement. Buyers who need to compare exact working heights or plate dimensions should note that those measurements are not supplied here.

Full product details
BrandFLOVENTIS
Included ComponentsSprings
Item Weight17 kg
ManufacturerFLOVENTIS
Part Number1V9781
Manufacturer Warranty Description1 Year
MaterialRubber, Steel
Model Number1V9781

Listed on Amazon as: 2Pcs Air Spring Bags for Freightliner Trucks 1V9781

View on Amazon
KJYDXYS Freightliner Air Spring

#7

7. KJYDXYS Freightliner Air Spring

Best for: Freightliner reinforced pair.

Why it ranks #7: Two-piece Freightliner replacement cross-referenced to 681-320-0017 and A16-14004-000, with reinforced steel studs and composite pistons.

Reinforced steel studs and stable composite pistons anchor this two-piece KJYDXYS replacement set for Freightliner references 681-320-0017 and A16-14004-000. Those construction details are presented alongside thick premium rubber, connecting the assembly’s materials to suspension stability and load support.

The listing says the thick rubber meets or exceeds OEM standards, while reinforced studs and stable composite pistons support its stated focus on stability and load capacity. Together, these construction features are described as supporting a smoother driving experience and lower maintenance. The stated Freightliner cross-references help identify the intended application, but no spring heights or plate widths are supplied for dimensional checking, so match the part reference carefully.

Pros
  • Two air spring bags included
  • Thick premium rubber meets or exceeds OEM standards
  • Reinforced steel studs
  • Stable composite pistons
Cons
  • No spring heights or plate widths are supplied for dimensional comparison.

Skip it if you need specified spring dimensions; Torque TR9780 lists extended height, compressed height, and plate and piston widths.

Freightliner owners matching 681-320-0017 or A16-14004-000 may consider this pair for a reinforced-material replacement. The listing emphasizes load support and stability, but buyers needing dimensional confirmation will need information beyond the specifications provided here.

Full product details
BrandKJYDXYS
Included ComponentsAir Suspension Kits
ManufacturerKJYDXYS
Part NumberLT-KCJZQN-0003-1
Manufacturer Warranty Description1Year
Model NumberLT-KCJZQN-0003-1

Listed on Amazon as: Air Suspension Spring Bags for Freightliner Trucks 681-320-0017, 2PCS

View on Amazon
KEIYSHOLCK Cab Sleeper Air Spring

#8 · Best Freightliner Cab Fit

8. KEIYSHOLCK Cab Sleeper Air Spring

Best for: Freightliner cab sleeper pair.

Why it ranks #8: Cab-sleeper bags are listed for Freightliner Century Class and Argosy, with W02-358-7206 and SC31W206 cross-references.

Imported high-density rubber identifies these two cab sleeper air spring bags for Freightliner Century Class and Argosy applications. Their listed references include W02-358-7206 and Freightliner 18-29919-000, helping buyers distinguish this cab suspension replacement from other truck air springs.

These bags are specified for cab air ride, rather than presented as a general trailer or chassis spring, which keeps the application focused on sleeper cab replacement. The high-density rubber is described as supporting durability and load performance. The seller states that direct replacement typically finishes within two hours or less and recommends professional installation for safety and efficiency. Match the cab model and listed references before arranging the work.

Pros
  • Pair of cab sleeper air spring bags
  • Freightliner Century Class and Argosy compatibility listed
  • High-density rubber construction
  • Direct replacement installation usually takes two hours or less
Cons
  • Application is limited to listed Freightliner cab sleeper models and references.

Skip it if you need chassis suspension bags for Freightliner 16-13810-000; Torque TR9780 is listed for that application.

Freightliner Century Class or Argosy owners replacing cab sleeper springs are the intended buyers, especially where the listed references match. This is a cab air ride part, and professional installation is recommended by the supplied information.

Full product details
BrandKEIYSHOLCK
Included ComponentsSprings
Part Number1C 3005
MaterialHigh Density Rubber
Model Number1C 3005

Listed on Amazon as: 2pcs Cab Sleeper Air Spring Bag Cab for Freightliner Truck

View on Amazon
Torque TR7036

#9

9. Torque TR7036

  • Weight: 2 lb

Best for: Peterbilt 379 cab spring.

Why it ranks #9: Peterbilt 379 cab-sleeper replacement with 14-inch extended height, 4-inch compressed height, and a listed one-year warranty.

A 14-inch extended height and 4-inch compressed height make this Torque air spring a dimension-specific option for Peterbilt 379 cab sleeper applications. Its stated 10-inch difference between those heights helps buyers compare the working range with the spring being replaced.

The 14-inch extended and 4-inch compressed measurements, along with the listed 10-inch BCR, help assess the spring’s operating envelope for a cab replacement. Torque also identifies multiple Peterbilt references, including 29-03200 and T81-6000, plus Firestone W02-358-7036 and ContiTech SC29-Y036. The high final-assembly leak-test ratio is another stated quality check. Verify the matching reference before ordering, since the listing calls for dealer confirmation.

Pros
  • Peterbilt 379 cab sleeper application listed
  • 14-inch extended and 4-inch compressed heights specified
  • 10-inch BCR listed
  • Multiple Peterbilt and replacement references supplied
Cons
  • The listed application is specifically a Peterbilt 379 cab sleeper spring.

Skip it if you need Freightliner Century Class cab bags; KEIYSHOLCK 1C 3005 lists Century Class and Argosy compatibility.

Peterbilt 379 owners replacing a cab sleeper spring can use the listed dimensions and cross-references to screen this model. Its application is cab-focused, so buyers replacing chassis or trailer suspension springs should select a part listed for that use.

Full product details
BrandTorque
Dimensions14"L x 6"W x 14"H
Item Weight2 pounds
ManufacturerTorque
Part Number2 x TR7036
Manufacturer Warranty Description1-year manufacturer warranty
Model NumberTR7036
Additional InformationImportant Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Listed on Amazon as: Torque Cab Sleeper Air Spring Bag Compatible with Peterbilt 379 Trucks

View on Amazon
Torque TR9978

#10

10. Torque TR9978

  • Weight: 15 lb

Best for: Trailer suspension replacement.

Why it ranks #10: This is a trailer air spring replacement for Firestone W01-358-9978, rather than a listed truck-chassis or cab-sleeper application.

An 18-inch extended height and 7.90-inch compressed height define Torque’s two-bag trailer replacement for Firestone W01-358-9978. The stated 9-inch top plate and 10.16-inch piston width add practical measurements for checking the existing trailer spring assembly.

The dimensions help buyers compare the spring’s working height and contact areas with the component being replaced. Torque pairs them with 4.5–5.00 mm rubber, 25% stronger 4140-grade steel studs, and stronger composite pistons, supporting a reinforced assembly. A permanently engraved part number makes identification easier during inspection. Listed references include Hendrickson C-28929 and Triangle AS-8959, allowing cross-checking beyond the Firestone number.

Pros
  • Two trailer air spring bags included
  • 18-inch extended and 7.90-inch compressed heights listed
  • 9-inch top plate and 10.16-inch piston widths specified
  • Engraved part identification and reinforced construction
Cons
  • The listed application is a trailer replacement, not a cab sleeper spring.

Skip it if you need Peterbilt 379 cab sleeper fitment; Torque TR7036 lists that cab application and its height measurements.

Trailer owners matching Firestone W01-358-9978 or the listed Hendrickson and Triangle references are the intended buyers. Compare the stated heights and widths with the existing spring; this listing identifies a trailer replacement rather than a cab application.

Full product details
BrandTorque
Item Weight‎15 pounds
Item model number‎TR9978
Manufacturer‎Torque
Part Number‎2 x TR9978
Model‎TR9978
Package Dimensions‎20.2 x 15.4 x 10.5 inches
Special Features‎25% stronger 4140 grade steel studs., 4.5 – 5.00 mm trick rubber that exceeds OEM requirements., Highest leak test ratio after final assembly., Stronger composite pistons.
Additional InformationImportant Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Listed on Amazon as: Torque 2 x Trailer Air Spring Bag Replacement for Firestone W01‐358‐9978

View on Amazon

Why an air spring can fail after replacement

A replacement air spring can fail prematurely if the part is wrong for the suspension position or installation, even when its cross-reference looks familiar. The listings show why construction details are useful but not sufficient: several Torque bags specify 4.5–5.00 mm rubber and reinforced 4140-grade studs, while FLOVENTIS describes rubber-and-steel construction without giving comparable thickness figures. A listing’s leak-test statement or material claim does not establish how long a bag will last in a particular truck.

Before fitting a replacement, inspect the surrounding suspension and mounting surfaces for damage, and follow the vehicle or component maker’s installation guidance. If a new bag leaks, sits incorrectly, or wears unevenly, stop and investigate fitment and installation rather than assuming a different brand alone will solve the problem.

The listed product facts do not identify failure causes for an individual truck.

Part-number matching matters more than truck make

A truck make alone is not enough to identify the correct air spring; confirm the exact replacement number and application. The products illustrate how easily a broad make-based search can mix distinct components: Freightliner listings include 16-13810-000, 681-320-0017, 9780, and 9781 references, while the Volvo choices cite 21132005 and Firestone W01-M58-Cab-sleeper bags are another separate category, with their own references such as W02-358-7206 or Peterbilt W02-358-7036.

Do not treat nearby or similar-looking numbers as interchangeable based on the product titles. Ask a dealer to identify the correct part number using the vehicle VIN, then compare that number with the replacement listing and confirm whether it is for the chassis, cab, or trailer.

The set of cross-references shown here is not a complete fitment catalog.

How to Choose Semi-Truck Air Bags

Exact fit and cross-reference numbers

Look for a replacement number that matches the bag already specified for your truck and suspension position. The listings show distinct applications: Torque TR9780 cross-references Firestone W01-358-9780, Torque TR8468 lists Volvo 21132005, and Torque TR8864 is identified for Kenworth C81-1011 and C81-Freightliner options also differ, including the 16-13810-000 references on TR9780 and FLOVENTIS 1V9780, versus the 9781 references on FLOVENTIS 1V9781.

Buyers replacing an identified component can start with its number; anyone uncertain should confirm the correct number with a dealer using the VIN. Do not select solely by make or appearance.

Dimensions and suspension position

Check the listed dimensions and make sure the product is for the chassis, cab, or trailer position you need. Torque TR9780 lists an 8.75-inch compressed height and 23-inch extended height; TR8468 lists 6 and 21 inches, respectively, while TR8864 lists 7.80 and 24.50 inches. These differences show why a familiar brand name does not establish dimensional compatibility.

The Torque TR7036 is specifically a cab-sleeper bag, and TR9978 is explicitly a trailer replacement, so neither should be treated as a chassis air spring by default. Buyers with verified measurements and part numbers can compare the product details directly; buyers without them should confirm fit before ordering.

Construction and included quantity

Compare material details and how many replacement bags are supplied, rather than assuming all listings describe the same package. Torque’s TR9780, TR8468, and TR8864 listings specify 4.5–5.00 mm rubber, reinforced 4140-grade steel studs, and stronger composite pistons. FLOVENTIS describes rubber-and-steel construction, while the MVPTruckParts Volvo listing also cites 4.5–5.00 mm rubber and thicker studs.

Package descriptions vary: several Torque titles specify two bags, and the MVPTruckParts title specifies four; other products are described as two-piece sets or pairs. A buyer replacing a matched pair should verify the package quantity in the listing, while a truck requiring a different quantity should not infer it from a product image or brand family.

Which Air Bag Should You Choose for Your Semi?

Choose Torque TR9780 if its Freightliner cross-references match your chassis: it combines 4.5–5.00 mm rubber and reinforced studs with listed dimensions. For a verified Volvo 21132005 fit, select Torque TR8468; for a Kenworth C81-1011 or C81-1013 application, consider Torque TR8864. FLOVENTIS 1V9780 and FLOVENTIS 1V9781 suit buyers matching their distinct Freightliner references, while MVPTruckParts Volvo Air Spring is another listed Volvo VNL option.

For cab suspension rather than chassis suspension, compare KEIYSHOLCK Cab Sleeper Air Spring or Torque TR7036 against the existing number. Torque TR9978 is specifically a trailer bag.

Confirm the exact part number and location with a dealer using your VIN before choosing any of them.

Frequently Asked Questions

How do I confirm which air spring fits my truck’s suspension position?

Confirm the required part number and suspension position using your VIN, then compare them with the product’s listed application or cross-reference numbers. Ask a dealer to verify the match before buying. A listing for the same truck make alone does not establish that a spring fits the specific chassis or position.

What should I check before replacing a semi-truck air spring?

Check the existing spring’s part number, the required suspension position, and the truck’s VIN with a dealer. Confirm whether the replacement is for chassis, cab, or trailer use, since these applications differ. Also inspect the surrounding suspension and follow the vehicle or component maker’s replacement instructions.

Can I replace only one air spring, or should I replace a pair?

Base the decision on the truck maker’s guidance, the condition of the other spring, and the repair diagnosis. Inspect both sides for damage or wear, and verify whether the replacement listing is for one spring or a pair. A matched pair listing does not by itself establish that both must be replaced.

How can I tell a cab air spring from a chassis air spring?

Match the product’s stated application to the part being serviced: cab or sleeper listings are for cab suspension, while chassis suspension springs serve a different location. Verify the existing part number and position with your VIN through a dealer; truck make alone is not enough to confirm the application.

Do cross-reference numbers need to match exactly?

Use the cross-reference numbers as a fit-check, not as a substitute for confirming the application. Compare the number on the existing part with the listing, then have a dealer verify the required part number and suspension position using your VIN. The article identifies distinct references for several listed Freightliner, Volvo, and Kenworth options.

Final Words

Start with the required part number and suspension position, verified by VIN through a dealer. For a matching Freightliner application, Torque TR9780 is the leading chassis replacement; the Volvo and Kenworth options are tied to their stated references. Match cab, chassis, and trailer applications carefully, and distinguish the two Freightliner reference options.

If any number or location is uncertain, verify fit before ordering rather than relying on make or model alone.

Leave a Reply

Your email address will not be published. Required fields are marked *