A strong choice for an automatic transmission is a correctly matched flexplate with the right crankshaft pattern, converter mounting, and starter engagement for your vehicle. This roundup compares ten listings, including GM Genuine Parts, ATP flexplates, and replacements for select Chrysler, Dodge, and Ram models. Fitment matters more than a broad product title: several parts are specific to particular engines or vehicle ranges, while the VW listing is for a dual-clutch transmission and is not a general automatic-transmission flexplate.
Use the manufacturer or OE part number as a starting point, then verify the exact year, engine, and vehicle fit before ordering. The listed specifications help narrow options, but they do not establish interchangeability across vehicles.
GM Genuine Parts 12654640 LS Flexplate leads for buyers whose vehicle requires an LS-pattern, six-bolt crankshaft flexplate. Its listing identifies that pattern directly, and GM says its parts are designed, engineered, and tested to its standards. That specificity makes it a stronger starting point than flexplates with only broad vehicle-family descriptions.
It is not universal: confirm that the six-bolt LS pattern and part number match your engine and vehicle before purchase.
Our Top Picks
Best OverallIts listing specifies an LS-pattern, six-bolt crankshaft flexplate, and GM says the part is engineered and tested for its vehicles.
View on Amazon
Best Chevy GMC FitListed for select Chevrolet and GMC models, it is balanced to OEM specifications and made from high-grade alloy steel.
View on Amazon
GM OE ChoiceGM Genuine Parts says this flex plate is designed, engineered, and tested to rigorous standards for GM vehicle applications.
View on Amazon- Ford Lincoln Mercury Fit ATP Z-345 Flexplate
- Chrysler Group Fit MOTOKU 68544198AA Flexplate
Compare these flexplates by application and design
| # | Product | Weight | Buy |
|---|---|---|---|
| 1 | 1. GM Genuine Parts 12654640Best Overall | 5.91 lb | View on Amazon |
| 2 | 2. ATP Z-270 FlexplateBest Chevy GMC Fit | 2.86 kg | View on Amazon |
| 3 | 3. GM Genuine Parts 12621644GM OE Choice | 3.61 lb | View on Amazon |
| 4 | 4. ATP Z-463 FlexplateSelect Buick and Cadillac repairs | 6.72 lb | View on Amazon |
| 5 | 5. ATP Z-345 FlexplateFord Lincoln Mercury Fit | 6.8 lb | View on Amazon |
| 6 | 6. ATP Z-367 FlexplateChevrolet GMC and Isuzu repairs | 6.7 lb | View on Amazon |
| 7 | 7. MOTOKU 68544198AA FlexplateChrysler Group Fit | 4.6 lb | View on Amazon |
| 8 | 8. AUGREX 68544198AA FlexplateChrysler 200 OE-reference match | 4.54 lb | View on Amazon |
| 9 | 9. WMJNH 68544198AA FlexplateChrysler-family smooth-operation focus | 4.4 lb | View on Amazon |
| 10 | 10. GELUOXI DSG Dual Mass FlywheelVW and Audi DSG replacements | — | View on Amazon |
Detailed Reviews: Best Flywheel For Automatic Transmission
Why it ranks #1: Its listing specifies an LS-pattern, six-bolt crankshaft flexplate, and GM says the part is engineered and tested for its vehicles.
The six-bolt LS pattern gives this GM Genuine Parts flexplate a specific application focus, while General Motors engineering and validation provide an OE-oriented replacement path. It is suited to buyers identifying a GM repair by that pattern and seeking a part validated for GM vehicles.
GM says its engineers design and validate OE parts for Chevrolet, Buick, GMC, or Cadillac vehicles, which gives this flexplate a clear manufacturer-specific role. Its title identifies a six-bolt LS pattern, helping narrow selection to the relevant crankshaft interface rather than a generic automatic-transmission part. GM also notes that production designs can be updated to integrate materials and technologies. Check the vehicle’s required pattern and application before installation; the supplied information does not give a vehicle-by-vehicle fit list.
- Identified as a six-bolt LS-pattern flexplate
- GM engineers design and validate OE parts for GM vehicles
- GM-backed part
- GM updates designs to integrate materials and technologies
- The supplied details do not provide a vehicle-by-vehicle fitment list.
Skip it if you need listed year-by-year Chrysler or VW fitment; this GM part is identified by its six-bolt LS pattern instead.
Consider this GM Genuine Parts flexplate when a repair calls for the stated six-bolt LS pattern and a GM-validated component. Its manufacturer-specific positioning is useful, but the supplied listing lacks a detailed vehicle application chart, so identify the required pattern first.
Full product details
| Brand | GM GENUINE PARTS |
|---|---|
| Item Weight | 5.91 pounds |
| Item model number | 12654640 |
| Manufacturer | GM Genuine Parts |
| Part Number | 12654640 |
| Model | GM Original Equipment |
| Dimensions | 16.62 x 15.88 x 3.88 inches |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: GM Genuine Parts 12654640 LS Pattern 6-Bolt Crankshaft Flexplate
View on Amazon
#2 · Best Chevy GMC Fit
2. ATP Z-270 Flexplate
- Weight: 2.86 kg
Best for: Chevrolet and GMC replacements.
Why it ranks #2: Listed for select Chevrolet and GMC models, it is balanced to OEM specifications and made from high-grade alloy steel.
OEM-spec balancing is the defining feature of ATP’s Z-270, helping support smooth operation in the automatic-transmission applications it fits. Its precision-manufactured starter engagement and converter mounting make it a practical replacement choice when those connection points and the vehicle application match.
ATP says the Z-270 matches original dimensions and counterweight, giving installers specific reference points for selecting a replacement. Balancing to OEM specifications supports smooth operation, while precision manufacturing addresses starter engagement and converter mounting during assembly. Its alloy-steel construction is identified as high-grade steel for strength and consistency. The listing is for select Chevrolet and GMC models, so application details matter: check the vehicle fitment information before starting the replacement.
- Balanced to OEM specifications for smooth operation
- Matched to original dimensions and counterweight
- Precision manufactured for starter engagement and converter mounting
- High-grade alloy steel construction
- Fits only select Chevrolet and GMC applications.
Skip it if you need a flexplate for a Ford or a specifically listed VW dual-clutch application; this listing targets select Chevrolet and GMC models.
Choose the ATP Z-270 for a replacement in a compatible Chevrolet or GMC automatic-transmission application where original dimensions, counterweight, starter engagement, and converter mounting are priorities. Its stated fit is limited to select models, so confirm the vehicle application before installation.
Full product details
| Brand | atp automotive |
|---|---|
| Color | Silver |
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Automatic transmission flexplate |
| Item Weight | 2.86 kg |
| Manufacturer | ATP |
| Part Number | Z-270 |
| Material | Alloy Steel |
| Model Number | Z-270 |
Listed on Amazon as: ATP Z-270 Automatic Transmission Flexplate | Fits Select Chevrolet/GMC Models
View on AmazonWhy it ranks #3: GM Genuine Parts says this flex plate is designed, engineered, and tested to rigorous standards for GM vehicle applications.
General Motors engineering and validation distinguish this GM Genuine Parts flex plate, positioning it as an OE-oriented choice for specified GM vehicle families. Buyers seeking a Chevrolet, Buick, GMC, or Cadillac part can use that manufacturer connection as a selection guide, while checking the exact application.
GM states that its engineers design and validate OE parts specifically for Chevrolet, Buick, GMC, or Cadillac vehicles. That manufacturer-specific role can help buyers sourcing a replacement for a GM application, rather than selecting by a generic flexplate description. GM also says production and service part designs are regularly updated to integrate materials and technologies. The listing names the part as an automatic-transmission flex plate, but provides no vehicle-by-vehicle application chart here, so confirm the required application before installation.
- GM Genuine Parts automatic-transmission flex plate
- GM engineers design and validate OE parts for named GM makes
- GM-backed part
- GM says designs are updated to integrate materials and technologies
- The supplied details do not identify specific vehicle years or models.
Skip it if you need explicit year-by-year Chrysler, Dodge, or Ram coverage; this listing identifies GM OE applications without a vehicle chart.
This part fits buyers prioritizing a GM Genuine Parts component for a Chevrolet, Buick, GMC, or Cadillac repair. It is an automatic-transmission flex plate, but the supplied listing does not specify vehicle years or models, so verify the application.
Full product details
| Brand | GM GENUINE PARTS |
|---|---|
| Item Weight | 3.61 pounds |
| Item model number | 12621644 |
| Manufacturer | GM Genuine Parts |
| Part Number | 12621644 |
| Model | GM Original Equipment |
| Dimensions | 14.75 x 14.38 x 3.5 inches |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: GM Genuine Parts 12621644 Automatic Transmission Flex Plate
View on AmazonWhy it ranks #4: The listing covers select Buick, Cadillac, Chevrolet, GMC, and Oldsmobile models and cites OEM-balanced operation.
OEM-spec balancing is the ATP Z-463’s key functional detail, intended to support smooth operation in the automatic-transmission applications it fits. Precision manufacturing for starter engagement and converter mounting also gives installers two practical connection requirements to consider when replacing a flexplate.
ATP describes the Z-463 as fitting select Buick, Cadillac, Chevrolet, GMC, and Oldsmobile models, which makes vehicle application the first selection check. Its balance to OEM specifications is intended to support smooth operation, while precision manufacturing addresses starter engagement and converter mounting during installation. The listed dimensions are 14.5 by 14.5 by 1 inch, useful as a reference when comparing the part being replaced. The listing does not specify individual vehicles, so confirm the application details before ordering.
- Balanced to OEM specifications for smooth operation
- Precision manufactured for starter engagement
- Designed for converter mounting
- Dimensions listed as 14.5 by 14.5 by 1 inch
- The listing identifies select makes but does not name individual vehicle applications.
Skip it if you need a specifically listed Chrysler, Dodge, or Ram year range; this ATP listing covers select GM-family makes instead.
The Z-463 suits buyers replacing a flexplate on a compatible Buick, Cadillac, Chevrolet, GMC, or Oldsmobile automatic-transmission application. Its balance and mounting details are relevant installation considerations, but the listing’s broad make names leave vehicle-level fitment to verify.
Full product details
| Brand | atp automotive |
|---|---|
| Item Weight | 6.72 pounds |
| Item model number | Z-463 |
| Manufacturer | ATP |
| Part Number | Z-463 |
| Model | Z-463 |
| Dimensions | 14.5 x 14.5 x 1 inches |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: ATP Z-463 Automatic Transmission Flexplate | Fits Select Buick/Cadillac/Chevrolet/GMC/Oldsmobile Models
View on Amazon
#5 · Ford Lincoln Mercury Fit
5. ATP Z-345 Flexplate
- Weight: 6.8 lb
Best for: Ford and Lincoln replacements.
Why it ranks #5: This ATP flexplate targets select Ford, Lincoln, and Mercury models, with original dimensions and counter-weight cited by the manufacturer.
ATP’s OEM-spec balancing and matched original dimensions give the Z-345 a defined replacement focus for select Ford, Lincoln, and Mercury models. Those details support a buyer comparing a replacement against the original part, while precision starter engagement and converter mounting address key installation interfaces.
The Z-345 is listed for select Ford, Lincoln, and Mercury models, so the exact vehicle application should guide selection. ATP says it is matched to original dimensions and counterweight, helping establish a direct comparison with the part being replaced. OEM-spec balancing is intended to support smooth operation, and precision manufacturing addresses starter engagement and converter mounting. Its metal construction is identified as high-grade steel for strength and consistency, but the listing does not name individual vehicle applications.
- Matched to original dimensions and counterweight
- Balanced to OEM specifications for smooth operation
- Precision manufactured for starter engagement and converter mounting
- High-grade steel construction
- Fits only select Ford, Lincoln, and Mercury applications.
Skip it if you need a GM-family application or a listed VW DSG vehicle; this ATP part is for select Ford, Lincoln, and Mercury models.
The ATP Z-345 is aimed at a compatible Ford, Lincoln, or Mercury automatic-transmission repair where original dimensions, counterweight, and mounting points matter. Because its listed coverage is limited to select models, confirm the exact vehicle application before choosing it.
Full product details
| Brand | atp automotive |
|---|---|
| Color | Black |
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Automatic transmission flexplate |
| Item Weight | 6.8 pounds |
| Manufacturer | ATP |
| Part Number | Z-345 |
| Material | Metal |
| Model Number | Z-345 |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including 1,1,2,2-tetrachloroethane which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: ATP Z-345 Automatic Transmission Flexplate | Fits Select Ford/Lincoln/Mercury Models
View on AmazonWhy it ranks #6: Its stated fit covers select Chevrolet, GMC, Isuzu, and Oldsmobile models; ATP describes high-grade steel construction.
Matched original dimensions and counterweight give ATP’s Z-367 a practical replacement reference, while OEM-spec balancing is intended to support smooth operation. It is listed for select Chevrolet, GMC, Isuzu, and Oldsmobile models, making exact vehicle application the deciding factor.
ATP’s stated fit covers select Chevrolet, GMC, Isuzu, and Oldsmobile models, giving this flexplate a defined group of makes without naming individual vehicles in the supplied details. Matching original dimensions and counterweight gives buyers concrete comparison points for a replacement. The OEM-spec balance is intended to support smooth operation, while precision manufacturing addresses starter engagement and converter mounting. ATP also identifies high-grade steel construction for strength and consistency, relevant when choosing a durable replacement component.
- Matched to original dimensions and counterweight
- Balanced to OEM specifications for smooth operation
- Precision manufactured for starter engagement and converter mounting
- High-grade steel construction
- The listing does not name individual vehicle applications.
Skip it if you need a specifically listed Ford or VW application; this ATP listing covers select Chevrolet, GMC, Isuzu, and Oldsmobile models.
Consider the Z-367 for a compatible Chevrolet, GMC, Isuzu, or Oldsmobile automatic-transmission repair where dimensions, counterweight, and mounting details matter. Its listed make coverage is selective, so establish the exact vehicle fit before installation.
Full product details
| Brand | atp automotive |
|---|---|
| Item Weight | 6.7 pounds |
| Item model number | Z-367 |
| Manufacturer | ATP |
| Part Number | Z-367 |
| Model | Auto Trans Flex Plate |
| Dimensions | 14.5 x 14.5 x 1 inches |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: ATP Z-367 Automatic Transmission Flexplate | Fits Select Chevrolet/GMC/Isuzu/Oldsmobile Models
View on Amazon
#7 · Chrysler Group Fit
7. MOTOKU 68544198AA Flexplate
- Weight: 4.6 lb
Best for: Chrysler and Dodge 3.6L applications.
Why it ranks #7: The listing names Chrysler, Dodge, and Ram applications and provides part number 68544198AA for fitment checking.
A broad, named vehicle list is the MOTOKU flexplate’s clearest advantage: it covers specified Chrysler, Dodge, and Ram applications with 3.6-liter engines. That makes it useful for owners or repairers working from an exact model and year, rather than selecting a part from brand alone.
The listing names Chrysler 200 and Town & Country, Dodge Avenger, Grand Caravan and Journey, plus Ram C/V and ProMaster variants. It also supplies year ranges and identifies the 3.6-liter engine for several applications, giving buyers concrete checks before a repair. The model number is 68544198AA, which provides another reference when matching the replacement. Because the fit list is specific, compare both vehicle year and model rather than relying only on the Chrysler, Dodge, or Ram badge.
- Lists multiple Chrysler, Dodge, and Ram applications
- Provides year ranges for named vehicles
- Specifies 3.6-liter fitment for listed applications
- Identifies model number 68544198AA
- The supplied fitment list is specific to named vehicles and years.
Skip it if you need a GM OE part or a Ford/Lincoln/Mercury application; this listing specifies selected Chrysler, Dodge, and Ram vehicles.
This MOTOKU option suits a repairer matching one of its listed Chrysler, Dodge, or Ram vehicles, especially when the specified 3.6-liter application and year range align. Treat the detailed application list as a boundary, not a universal fit claim.
Full product details
| Brand | MOTOKU |
|---|---|
| Item Weight | 4.6 pounds |
| Item model number | 68544198AA |
| Manufacturer | MOTOKU |
| Part Number | 68544198AA |
| Model | 68544198AA |
| Package Dimensions | 12.8 x 12.52 x 2.24 inches |
Listed on Amazon as: MOTOKU Automatic Transmission Clutch Flywheel Flexplate
View on AmazonWhy it ranks #8: It identifies OE replacement number 68544198AA and lists Chrysler, Dodge, and Ram vehicle applications.
A stated OE replacement reference, 68544198AA, gives the AUGREX flexplate a direct starting point for application matching. Its listed compatibility spans named Chrysler, Dodge, and Ram vehicles, making it useful for buyers who can compare their vehicle and replacement reference against the supplied coverage.
AUGREX identifies 68544198AA as the OE part number it replaces, a concrete reference for narrowing a repair search. The listing names Chrysler 200, Town & Country, Dodge Avenger, Grand Caravan, Journey, Ram C/V, and ProMaster applications with year ranges in its compatibility description. That breadth can serve multiple vehicle families, but it does not make the part universal. Match the specific model and year to the listed coverage before installation, particularly when sourcing for a Chrysler 200.
- Identifies OE replacement reference 68544198AA
- Lists Chrysler, Dodge, and Ram vehicle applications
- Provides year ranges for named applications
- Offers a fitment reference beyond the product title
- The supplied details do not specify engine sizes for the listed applications.
Skip it if you need an LS-pattern GM flexplate or a VW DSG dual-mass flywheel; this listing is for specified Chrysler, Dodge, and Ram vehicles.
The AUGREX flexplate suits a buyer matching OE reference 68544198AA and a listed Chrysler, Dodge, or Ram vehicle. Its application list is useful, but the supplied information does not state engine sizes, so treat vehicle-specific matching as essential.
Full product details
| Brand | AUGREX |
|---|---|
| Item Weight | 4.54 pounds |
| Item model number | AUGREX |
| Manufacturer | AUGREX |
| Part Number | Replace 68544198AA |
| Model | AUGREX |
| Package Dimensions | 12.28 x 12.05 x 1.54 inches |
Listed on Amazon as: Automatic Transmission Clutch Flywheel Flexplate Fit for Chrysler 200
View on AmazonWhy it ranks #9: The listing gives replacement numbers 68544198AA and 04800696AA and names matching Chrysler, Dodge, and Ram model ranges.
The WMJNH listing pairs broad Chrysler, Dodge, and Ram application coverage with claims about reducing acceleration jerks, vibration, and operating noise. That combination makes it relevant to repairers seeking a flexplate for a named vehicle in the listed range while prioritizing smoother, quieter operation.
The stated applications include Chrysler 200, Town & Country, Dodge Avenger, Grand Caravan and Journey, Ram C/V, and ProMaster variants, with years provided for each group. Replacement references include 68544198AA, 04800696AA, and 4800696AA, giving buyers identifiers to compare against a repair requirement. The product description says its precise connection reduces acceleration jerks, vibration, and abnormal noise. Those are stated operating benefits, while the supplied fitment list remains the practical boundary for vehicle selection.
- Lists Chrysler, Dodge, and Ram applications with year ranges
- Provides three replacement references
- Description claims reduced acceleration jerks
- Description claims reduced vibration and abnormal noise
- The stated fitment is limited to the listed Chrysler, Dodge, and Ram applications.
Skip it if you need a GM six-bolt LS-pattern part or a Ford application; this listing specifies selected Chrysler, Dodge, and Ram vehicles.
This WMJNH flexplate is a candidate for owners or repairers matching its listed Chrysler, Dodge, or Ram applications and replacement references. Its stated smoother-operation benefits may matter in that repair, but exact model and year remain essential fit checks.
Full product details
| Brand | WMJNH |
|---|---|
| Item Weight | 4.4 pounds |
| Item model number | Replace 68544198AA |
| Manufacturer | HZparts |
| Part Number | TATCFFHPS0422 |
| Model | Automatic Transmission Clutch Flywheel Flexplate |
| Package Dimensions | 11.81 x 11.81 x 1.58 inches |
Listed on Amazon as: Automatic Transmission Clutch Flywheel Flexplate Replace 68544198AA
View on AmazonWhy it ranks #10: This is specified for a six-speed DSG dual-clutch transmission, not a conventional automatic-transmission flexplate, so it is the least suitable match.
Six-speed DSG dual-clutch transmission application is the defining focus of this dual-mass flywheel, with listed VW and Audi 2.0-liter vehicle coverage. That specificity helps buyers narrow a replacement search by transmission type, engine size, model, and year instead of treating it as a general automatic flexplate.
The listing identifies a dual-mass flywheel for a six-speed DSG automatic dual-clutch transmission, making transmission type central to selection. It names Audi A3 2.0L for 2010–2013, VW Jetta 2.0L for 2009–2010, Golf 2.0L for 2010–2013, and Beetle 2.0L for 2013–2015. Multiple replacement part references are supplied, offering additional identifiers for a repair match. This detailed scope supports targeted sourcing, but the listed models, years, and engine size remain important boundaries.
- Specified for a six-speed DSG automatic dual-clutch transmission
- Identifies a dual-mass flywheel
- Lists Audi A3, VW Jetta, Golf, and Beetle applications
- Provides multiple replacement part references
- Its stated applications are limited to listed 2.0-liter VW and Audi models and years.
Skip it if you need a conventional flexplate for a listed Chrysler, Dodge, or Ram model; this part is specified for VW and Audi DSG applications.
Choose this GELUOXI dual-mass flywheel when the repair is for a listed VW or Audi 2.0-liter application with the specified six-speed DSG transmission. Its model-year and transmission scope is the key fit boundary, so match those details carefully.
Full product details
| Brand | GELUOXI |
|---|---|
| Color | Silver |
| Compatible with Vehicle Type | Passenger Car |
| Manufacturer | GELUOXI |
| Part Number | GELUOXI 03G105266BD |
| Manufacturer Warranty Description | 12 Months |
Listed on Amazon as: Dual Mass Flywheel Replacement For 2009-2010 VW Jetta, 2010-2013 Golf, 2013-2015 Beetle 2.0L Automatic Dual Clutch Transmission 03G105266BD 03G105266CH
View on AmazonWhy flexplate fitment errors matter
A flexplate mismatch can prevent proper starter engagement or torque-converter mounting, even when the part looks broadly similar. The ATP listings specifically call out precision starter engagement and converter mounting, and the GM 12654640 listing identifies an LS-pattern, six-bolt crankshaft design. Those details make pattern and part-number verification essential, not optional.
A vehicle-family label alone may not resolve engine variations, and the listed product descriptions do not provide complete bolt patterns or dimensions for every part. Check the vehicle’s exact engine and transmission configuration, then compare the required OE number and manufacturer fitment notes.
ATP also advises checking Amazon Confirmed Fit and reading fitment notes when shown. Do not infer interchangeability from shared brand or model names, or from a flexplate’s approximate diameter or weight.
Automatic flexplate versus dual-mass flywheel
A dual-mass flywheel listed for a dual-clutch transmission is not a substitute for a conventional automatic-transmission flexplate. GELUOXI’s listing describes a six-speed DSG dual-clutch application for select VW and Audi vehicles, while the other products are described as automatic-transmission flexplates or flex plates. The word flywheel in a listing title can therefore obscure a meaningful design and transmission distinction.
Confirm the transmission type in the vehicle documentation and match the required part number before buying. This roundup’s GELUOXI listing names several VW and Audi applications and a 12-month manufacturer warranty, but those facts do not make it suitable for a conventional automatic.
Choosing by the keyword alone risks ordering the wrong component; the transmission type and OE reference should decide.
How to Choose an Automatic Flexplate
Vehicle and engine fitment
Start with the exact vehicle, engine, and transmission fitment rather than the product title. The set ranges from ATP parts for select Chevrolet/GMC, Buick/Cadillac/Chevrolet/GMC/Oldsmobile, and Ford/Lincoln/Mercury applications to the 68544198AA listings for named Chrysler, Dodge, and Ram models. GM Genuine Parts 12654640 is explicitly an LS-pattern, six-bolt design.
These are not interchangeable families. Buyers who already know their OE number should use it to narrow the choice; buyers relying on a vehicle list should verify the exact engine and year range with fitment notes before ordering.
A broad make description is not confirmation of compatibility.
Part number and design reference
Look for an exact OE or replacement number, plus any stated crankshaft pattern, before choosing a flexplate. GM Genuine Parts 12654640 identifies an LS pattern and six bolts; the MOTOKU, AUGREX, and WMJNH listings reference 68544198AA, while WMJNH also lists 04800696AA. GELUOXI names numerous VW/Audi references but specifies a six-speed DSG dual-clutch application.
Buyers matching a known service part number can use these references to compare listings; buyers without one should establish the correct number from vehicle records or a qualified parts source. Do not treat similar-looking numbers or a shared vehicle make as proof that the part fits.
Construction and listed dimensions
Use listed material and dimensions as supporting checks, not as substitutes for fitment. ATP Z-270 specifies alloy steel and weighs 2.86 kg; the other ATP listings include weights of 6.72 pounds for Z-463, 6.8 pounds for Z-345, and 6.7 pounds for Z-GM Genuine Parts 12654640 lists dimensions of 16.62 by 15.88 by 3.88 inches, while some other listings give different package or product dimensions.
Some figures may describe packaging, so verify what the listing measures. Buyers comparing a known replacement can use the stated material, weight, and dimensions as cross-checks; anyone choosing between parts for different vehicles should prioritize the confirmed application and part number.
Which Automatic Flexplate Should You Choose?
Choose by exact application first. If your vehicle requires an LS-pattern, six-bolt crankshaft part, GM Genuine Parts 12654640 is the most specifically identified option in this roundup. For a confirmed select Chevrolet or GMC application, ATP Z-270 Flexplate offers alloy-steel construction and OEM-balanced specifications.
Buyers with a GM vehicle should also compare GM Genuine Parts 12621644 against the required part number; its listing emphasizes GM engineering but does not state an LS pattern. For listed Chrysler, Dodge, or Ram applications using 68544198AA, compare MOTOKU 68544198AA Flexplate, AUGREX 68544198AA Flexplate, and WMJNH 68544198AA Flexplate against the vehicle fitment details.
Avoid GELUOXI DSG Dual Mass Flywheel for a conventional automatic: its stated application is a dual-clutch transmission.
Related Buying Guides
Frequently Asked Questions
How can I confirm a flexplate matches my engine and torque converter?
Confirm the vehicle’s exact year, make, model, engine, and transmission, then compare the required part number and flexplate pattern with the listing. Check crankshaft bolt pattern and torque-converter compatibility in reliable fitment information. If any detail is unclear or conflicts, verify with a qualified parts source before ordering.
What symptoms can indicate a cracked or damaged flexplate?
A cracked or damaged flexplate may cause unusual knocking or rattling near the engine-transmission area, especially during starting or while the engine runs. Starting trouble or visible damage can also warrant inspection. These symptoms can have other causes, so have the vehicle diagnosed rather than assuming the flexplate is at fault.
Can an automatic-transmission flexplate be replaced without removing the transmission?
Usually, replacement requires separating the transmission from the engine enough to access the flexplate, so transmission removal or substantial movement is commonly involved. The exact procedure depends on the vehicle’s layout and service instructions. Check the repair information for the specific application and use a qualified technician if you lack the required tools or experience.
Why should I compare the listed part number with my vehicle’s required number?
A matching part number is a useful way to narrow fitment, but it should agree with the engine, transmission, and vehicle application. Similar descriptions do not establish that two parts are interchangeable. Check the required number against the listing and vehicle-specific fitment information, and resolve discrepancies before purchase.
Is a dual-mass flywheel suitable for a conventional automatic transmission?
Not necessarily: a dual-mass flywheel listed for a dual-clutch transmission is not the same application as a conventional automatic-transmission flexplate. This roundup identifies the dual-mass option as intended for a dual-clutch transmission. Choose a part only when its stated transmission application matches the vehicle.
Final Words
Choose by exact application, not by a broad vehicle-family description. For a vehicle requiring an LS-pattern, six-bolt crankshaft flexplate, GM Genuine Parts 12654640 is the most specifically identified option here. For other vehicles, verify the required part number and fitment details; compare the listed 68544198AA options only where that number applies.
Do not select the dual-mass option for a conventional automatic transmission.







