Best Mufflers For Diesel Trucks: Compare 10 Options

#1 · Best Overall

1. Rudy's 5-Inch Muffler

• Material: Stainless Steel
• Material Type: Stainless Steel
• Compatible with Vehicle Type: Commercial Vehicle, Cummins Diesel, Duramax…

Best for: Polished 304 stainless 5-inch fit.

Why it ranks #1: Specifically described for diesel trucks, it lists 5-inch inlet and outlet diameters, a 14-inch body, and compatibility with several diesel vehicle types.

Polished 304 stainless steel is the key material feature of Rudy’s muffler, with corrosion resistance and long-lasting durability stated for diesel truck use. Its 5-inch inlet and outlet, 14-inch body, and 20-inch overall length place it between compact resonators and 30-inch muffler formats.

The 5-inch inlet and outlet suit exhaust systems using that connection size, and the 14-inch body with 20-inch overall length gives buyers specific figures for clearance planning. Polished 304 stainless steel is cited for corrosion resistance and durability, while the high-flow design targets exhaust flow. The listed compatible vehicle types include Cummins, Duramax, and Powerstroke diesel applications, as well as heavy-duty pickups and commercial vehicles; those categories do not specify every individual fit.

Skip it if you need a 4-inch connection; FortisArc’s LSQ472430 lists 4-inch inlet and outlet dimensions.

Consider this for a 5-inch diesel truck exhaust where polished 304 stainless steel and a 20-inch overall length suit the plan. Its listed vehicle categories help narrow the search, but the connection size and individual exhaust layout still matter.

Listed on Amazon as: Rudy's 5" Polished 304 Stainless Steel Muffler for Diesel Trucks

#2 · Best Long 5-Inch

2. JY Performance 5-Inch Muffler

• Material: Stainless Steel
• Material Type: Stainless Steel
• Compatible with Vehicle Type: Diesel muffler

Best for: 5-inch clamp-equipped diesel fit.

Why it ranks #2: Its diesel-muffler listing specifies 5-inch inlet and outlet diameters, a 30-inch overall length, stainless steel, and two included clamps.

A pair of included clamps accompanies this JY PERFORMANCE muffler, giving 5-inch diesel exhaust buyers connection hardware alongside its straight-through, TIG-welded construction. The 8-inch round, 24-inch body and 30-inch overall length define the space it occupies, while its polished stainless shell offers a finished exterior.

The 5-inch inlet and outlet suit a system using that inner diameter, and the two included clamps support a clamp-based connection workflow. Its straight-through path is paired with TIG welding, while the stainless steel construction is specified to resist rust. The 24-inch body and 30-inch overall measurement help assess available installation space; either end can serve as inlet or outlet, simplifying orientation without changing the required pipe diameter.

Skip it if you have a 4-inch exhaust; JY PERFORMANCE's DAC187 uses matching 4-inch inlet and outlet connections.

This suits buyers replacing a 5-inch diesel muffler who value included clamp hardware and a polished stainless exterior. Check the available space for its 30-inch overall length and match both exhaust connections to 5 inches.

Listed on Amazon as: 5 Inch Inlet Diesel Muffler Exhaust with Clamp- 8" x 24" Body – 30" OAL

#3 · Best Long 4-Inch

3. JY Performance 4-Inch Muffler

• Material: Stainless Steel
• Material Type: Stainless Steel
• Compatible with Vehicle Type: Diesel muffler

Best for: 4-inch clamp-on diesel option.

Why it ranks #3: This diesel muffler pairs 4-inch inlet and outlet diameters with a 30-inch overall length, stainless steel construction, and two included clamps.

Two included clamps distinguish this 4-inch JY PERFORMANCE muffler as a package with connection hardware for matching exhaust pipework. Its straight-through, TIG-welded design sits in a 7-inch round body measuring 24 inches long, with 30 inches overall, helping buyers assess both connection size and required installation space.

The 4-inch inner-diameter inlet and outlet target exhaust systems with matching pipe size, and the two clamps provide hardware for a clamp-based installation. A straight-through layout pairs with TIG welding, while stainless steel construction is specified for rust resistance. The muffler has no inlet-or-outlet difference, so either end can face upstream; its 30-inch overall length remains an important space constraint when planning the replacement.

Skip it if you need 5-inch pipe connections; JY PERFORMANCE's DAC188 has 5-inch inlet and outlet openings.

Consider this for a 4-inch diesel exhaust replacement where clamp hardware and reversible orientation suit the installation plan. Its 30-inch overall length and 7-inch round body still need to fit the vehicle’s available exhaust space.

Listed on Amazon as: 4 Inch Inlet Diesel Muffler Exhaust with Clamp- 7" x 24" Body – 30" OAL

#4 · Clamp-On Pick

4. FortisArc 4-Inch Muffler

• Material: Stainless Steel
• Material Type: Stainless Steel
• Compatible with Vehicle Type: Car, Truck

Best for: Clamp-on 4-inch diesel replacement.

Why it ranks #4: Listed for car and truck use, it has 4-inch inlet and outlet diameters, a 30-inch overall length, and included clamp-on installation hardware.

Two included clamp bands make this FortisArc 4-inch muffler a no-welding option for buyers planning a clamp-on exhaust connection. Its stainless steel construction, straight-through path, and 7-by-24-inch body at 30 inches overall combine a specified installation approach with dimensions suited to a full-size replacement layout.

The 4-inch inlet and outlet are intended for matching exhaust connections, while the two clamp bands support installation without welding. Its straight-through construction keeps the exhaust path direct, and a seamless, one-piece welded stainless structure is specified for durability and corrosion resistance. The 7-by-24-inch body and 30-inch overall length help plan the available space; the listed clamp-on method does not remove the need for compatible pipe dimensions.

Skip it if you need a compact resonator rather than a full-length muffler; EVIL ENERGY’s resonator is 13.7 inches overall.

Pick this for a 4-inch exhaust replacement where clamp bands and a no-welding approach fit the installation workflow. Its 30-inch length and matching connection dimensions remain essential boundaries when checking available space and pipe compatibility.

Listed on Amazon as: 4" Inlet Diesel Muffler Exhaust with Clamp, Straight Through Stainless Steel, 7" x 24" Body, 30" OAL, Clamp-On Installation, No Welding Required

#5

5. Upower 4-Inch Muffler

• Material: Stainless Steel-Fiberglass
• Material Type: Stainless Steel-Fiberglass
• Compatible with Vehicle Type: Universal

Best for: 4-inch straight-through replacement.

Why it ranks #5: The universal stainless steel diesel muffler has 4-inch inlet and outlet diameters, a 30-inch overall length, and a straight-through design.

A 4-inch straight-through path is the defining feature of this Upower muffler, letting exhaust pass without a restrictive internal route. Its 7-inch round, 24-inch body and 30-inch overall length give buyers concrete dimensions to compare with an existing diesel exhaust layout before planning a replacement.

Both ends accept either inlet or outlet duty, so the muffler’s orientation is flexible when laying out a compatible 4-inch system. The straight-through construction is specified to avoid restricting exhaust flow and help exhaust velocity performance, while the fully welded stainless steel and fiberglass construction supports a durable assembly. At 30 inches overall with a 24-inch body, it requires space for that length; the listed universal compatibility does not establish a specific vehicle fit.

Skip it if you need a 5-inch connection; JY PERFORMANCE's 5-inch DAC188 uses that inlet and outlet size.

Choose this for a diesel exhaust layout needing a 4-inch, straight-through muffler and enough room for its 30-inch length. Its reversible ends add layout flexibility, but universal compatibility is not a vehicle-specific fit guarantee.

Listed on Amazon as: Upower 4" Inlet Diesel Exhaust Muffler 7" x 24" Body 30" Whole Length XS2772 – Straight Through Stainless Steel Welded On Resonator Muffler

#6

6. LCGP 5-Inch Muffler

• Material: Stainless Steel
• Material Type: Stainless Steel

Best for: Short 5-inch diesel resonator.

Why it ranks #6: Its diesel exhaust listing specifies 5-inch inlet and outlet diameters, a compact 17.3-inch overall length, stainless steel, and a one-year warranty.

A 17.3-inch overall length gives the LCGP resonator a shorter footprint than the 30-inch 5-inch mufflers, helping buyers assess it for tighter exhaust layouts. Its 5-inch inlet and outlet, 10.5-inch body, and straight-through design pair compact dimensions with the maker’s stated higher-flow intent and deep tone.

The 5-inch inlet and outlet identify the required pipe diameter, while the 17.3-inch overall length may suit a layout with less room than a full-length muffler. Its 10.5-inch body is 6 inches round, making the body dimensions useful in clearance planning. The straight-through design is described as allowing higher flow and bringing a deep, throaty tone; stainless steel construction is specified for durability and rust resistance.

Skip it if you need a 24-inch muffler body; JY PERFORMANCE’s DAC188 lists that body length with 5-inch connections.

This fits buyers seeking a shorter 5-inch straight-through resonator with a stated deep tone and stainless construction. Its compact body is not a 24-inch-body replacement, so compare overall and body dimensions with the space and muffler layout available.

Listed on Amazon as: LCGP 5" Inlet Diesel Exhaust Muffler, 5" Inlet & Outlet, 5" x 10.5" Body 17.3" Whole Length Universal Resonator, Straight Through Design, Stainless Steel Mufflers Resonator

#7

7. Walker Heavy Duty Muffler

• Material: Alloy Steel
• Material Type: Alloy Steel
• Compatible with Vehicle Type: Car

Best for: Blue Bird direct-fit replacement.

Why it ranks #7: This heavy-duty direct-fit option lists 5-inch inlet diameter and Blue Bird All American FE applications, but its vehicle-specific fitment is narrower.

Vehicle-specific compatibility is the defining point of Walker’s 22920: its listing names Blue Bird All American FE applications across multiple model years. The 5-inch inlet and alloy-steel construction make it a replacement-oriented choice for buyers prioritizing the named application over a broadly universal muffler format.

The listed Blue Bird All American FE compatibility provides a narrower starting point for replacement research than a universal muffler, while the 5-inch inlet identifies a key connection dimension. Walker describes its catalog as offering direct-fit and universal mufflers, and this product is identified as direct fit. Its 48-inch listed length also matters for exhaust-space planning; the supplied specification lists no outlet connection size, so the inlet alone does not describe every connection detail.

Skip it if you need a universal 4-inch muffler; Upower’s XS2772 lists 4-inch inlet and outlet connections.

This is for a buyer replacing a muffler on a listed Blue Bird All American FE application who wants a direct-fit option. Check the vehicle-specific listing and exhaust connection details, especially since the supplied specifications state only the inlet size.

Listed on Amazon as: Walker Heavy Duty 22920 Direct Fit Exhaust Muffler 5" Inlet (ID) 5" Outlet (ID)

#8

8. JFKAI QIANG 4-Inch Muffler

• Material: Alloy Steel
• Material Type: Alloy Steel
• Compatible with Vehicle Type: Car, Truck

Best for: Truck-focused 4-inch exhaust.

Why it ranks #8: Described for diesel and truck applications, it has 4-inch inlet and outlet diameters and a 30-inch overall length, though material details vary.

Truck-focused positioning sets this JFKAI QIANG muffler apart, with a 4-inch straight-through resonator layout intended for diesel exhaust flow and sound performance. Its title specifies a 7-by-24-inch body and 30-inch overall length, while polished stainless steel gives buyers a corrosion-resistant finish for demanding conditions.

The 4-inch inlet and outlet match systems built around that connection diameter, and the straight-through resonator configuration is presented for truck diesel applications. Stainless steel and a polished surface support corrosion resistance and a clean exterior, useful where the exhaust faces harsh conditions. Its stated 7-by-24-inch body and 30-inch overall length inform space planning, although the supplied specifications do not establish a particular vehicle-specific fit.

Skip it if you want clamps included for installation; FortisArc's LSQ472430 lists clamp bands and clamp-on installation.

A truck owner seeking a 4-inch straight-through resonator with a polished stainless finish may find this configuration relevant. Plan around the stated 30-inch overall length and verify that the truck’s exhaust layout accommodates its dimensions.

Listed on Amazon as: 4 Inch Diesel Muffler Exhaust, 4" Inlet 4" Outlet Straight Through Resonator, 7" x 24" Body 30" OAL, Stainless Steel Muffler for Truck

#9

9. Floshine 5-Inch Muffler

• Material: Stainless Steel
• Material Type: Stainless Steel
• Compatible with Vehicle Type: Car

Best for: 5-inch low-tone long body.

Why it ranks #9: Its 5-inch inlet, 24-inch body, and 30-inch overall length suit a larger exhaust layout, but the listing describes car rather than diesel-specific fitment.

Four material layers and CRF technology define the Floshine muffler’s sound-oriented construction, which is specified to produce a low, deep tone. Its 5-inch inlet and outlet, 8-inch round body, and 30-inch overall length make it a long-format option for buyers with matching pipework and room to install it.

The straight-through design creates more space in the pipe’s middle and is described as allowing higher flow, while the 5-inch inlet and outlet call for matching connections. Four layers and continuous roving fiberglass technology are linked to its low, deep tone; factory-style sound absorption is also described as reducing radiated noise. At 30 inches overall with a 24-inch body, it requires a suitably sized exhaust space rather than a short resonator position.

Skip it if you need a shorter 5-inch resonator; LCGP’s SHR506018 measures 17.3 inches overall.

This suits buyers with 5-inch exhaust pipework seeking a long straight-through muffler and a low, deep tone. Allow for its 30-inch length and 8-inch round body, and account for the listed inlet size when evaluating compatibility.

Listed on Amazon as: 5'' Exhaust Muffler, 5'' inlet/outlet, Universal 30'' Overall Stainless Steel Straight Through Design, Resonator Muffler

#10

10. EVIL ENERGY 4-Inch Resonator

• Material: Stainless Steel
• Material Type: Stainless Steel
• Compatible with Vehicle Type: Car

Best for: Compact 4-inch deep-tone resonator.

Why it ranks #10: This compact 13.7-inch universal resonator fits 4-inch pipes, but its listed vehicle type is car rather than diesel truck.

At 13.7 inches overall, this EVIL ENERGY resonator is substantially shorter than the 30-inch mufflers in this roundup, helping when installation space is limited. Its 4-inch OD connections and straight-through, fiberglass-packed design combine a compact footprint with a low, deep tone for compatible exhaust systems.

The 4-inch outside-diameter inlet and outlet are specified for 4-inch exhaust pipes, provided there is sufficient installation space. A 4.53-inch body diameter and 13.7-inch overall length make its footprint easier to assess in a compact exhaust layout. Fiberglass packing absorbs sound, while the double-layer stainless design helps reduce vibration and absorb sound. The listing also describes a no-welding design and compatible butt-joint band clamps, supporting a removable connection workflow.

Skip it if you need a 30-inch diesel muffler; FortisArc’s LSQ472430 lists that overall length and includes clamp bands.

Choose this compact resonator for a 4-inch exhaust where a deep tone and no-welding connection approach suit the installation. Its short 13.7-inch length is the key boundary; confirm that the available space and pipe outside diameter match.

Listed on Amazon as: EVIL ENERGY 4" Resonator Muffler, 4" Inlet & Outlet (OD) Stainless Steel Universal Straight Through Muffler, Deep Tone for Modern Trucks, Muscle Cars & Daily Drivers