Best Car Flexplates of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 10, 2026

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Car flexplates are an essential component of automatic transmissions in vehicles. They connect the engine's crankshaft to the torque converter, allowing for the transfer of power from the engine to the transmission. These flexplates are typically made of steel or aluminum and are designed to withstand the high torque and rotational forces generated by the engine. They also play a crucial role in reducing vibrations and ensuring smooth operation of the transmission. Car flexplates come in a variety of sizes and configurations to fit different types of engines and transmissions, making it important to choose the right one for your vehicle.

At a Glance: Our Top Picks

LOSTAR Flexplate Flywheel Dust Cover for GM TH350 TH400 700R4 Cover #TOP 1
LOSTAR Flexplate Flywheel Dust Cover for GM TH350 TH400 700R4
ftb score rating icon 9.9
DICMIC LS V8 Flexplate Adapter Kit for GM Gen III and TH350/TH400/700R4 Cover #TOP 2
DICMIC LS V8 Flexplate Adapter Kit for GM Gen III and TH350/TH400/700R4
ftb score rating icon 9.8
Speedway Motors Chevy 168 Tooth Flexplate Cover #TOP 3
Speedway Motors Chevy 168 Tooth Flexplate
ftb score rating icon 9.6

Top 10 Car Flexplates

#TOP 1

LOSTAR Flexplate Flywheel Dust Cover for GM TH350 TH400 700R4

LSOT00743NEW2
Black
LOSTAR Flexplate Flywheel Dust Cover for GM TH350 TH400 700R4 Cover
LOSTAR Flexplate Flywheel Dust Cover Compatible with GM Turbo 350 400 TH350 TH400 700R4 Black

The LOSTAR Flywheel Dust Cover is designed to fit most GM rear-wheel-drive automatic transmissions from 1965 to 1995, making it a versatile choice for many vehicles. Keep in mind, you may need to adjust your starter to ensure a perfect fit. This cover is made from durable materials that protect your powertrain from dust and road debris, helping extend the life of your important engine parts. It’s built under strict quality controls, so you can trust its performance. Plus, it comes with mounting hardware and a one-year quality guarantee for added peace of mind.

What We Like
Wide GM transmission compatibility
Durable, high-quality materials
Protects against dust and debris
Includes mounting hardware
One-year quality guarantee
#TOP 2

DICMIC LS V8 Flexplate Adapter Kit for GM Gen III and TH350/TH400/700R4

DICMIC-D326
DICMIC LS V8 Flexplate Adapter Kit for GM Gen III and TH350/TH400/700R4 Cover
DICMIC LS V8 Flexplate Adapter Kit for GM Gen III TH350 TH400 700R4 Transmission

The DICMIC LS Flexplate Kit is designed to make your engine and transmission swap easier and more reliable. It includes a flexplate adapter, bolts, a crank sleeve adapter, and a torque converter bolt kit, so you have everything you need in one package. This kit supports two common torque converter bolt patterns, giving you flexibility for different setups. Plus, it works with your factory LS starter, helping you save money by avoiding extra parts. The flexplate itself is thicker than stock, which means it meets safety standards and offers better durability for your build.

What We Like
Complete adapter kit
Supports multiple bolt patterns
Compatible with factory LS starter
Thicker, SFI-certified flexplate
#TOP 3

Speedway Motors Chevy 168 Tooth Flexplate

91048369
Plain
Speedway Motors Chevy 168 Tooth Flexplate Cover
Speedway Motors 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth - Perfect for Engine/Transmission Installations - Small Block Chevy - Non SFI Rated

The Speedway Motors Chevy Flexplate is designed for Small Block Chevy engines that have a two-piece rear main seal, making it a great fit for those specific engine types. If you're installing a new engine or transmission, this flexplate offers the flexibility you need, simplifying your project. With 168 teeth, it ensures smooth and efficient transmission operation, which helps your vehicle perform better. The dual bolt patterns, 10-3/4" and 11-1/2", mean this flexplate can work with various setups, giving you more options and convenience during installation.

What We Like
Small Block Chevy compatibility
Engine/transmission installation flexibility
168 teeth for smooth operation
Dual bolt pattern options
#TOP 4

ICT Billet 6pc Extended LS Flexplate Adapter Bolts

551951X6
ICT Billet 6pc Extended LS Flexplate Adapter Bolts Cover
ICT Billet 6pc Extended Length LS Flexplate Flywheel Adapter Bolts Set Kit LS1 LS3 LS2 Heavy duty, High Strength, Zinc coated, Grade 10.9 Steel 551951X6

The ICT Billet LS Flexplate Bolts are designed with extended length to fit crankshaft adapter plates, making installation easier for users working on LS engines. The M11-1.5 threading ensures a precise and secure fit, which helps prevent loosening during engine operation. This set includes six bolts, providing everything you need for a complete flexplate adapter setup. Made from OEM-grade 10.9 steel, these bolts offer high strength and durability, giving you confidence in their ability to handle heavy-duty applications without failure.

What We Like
Extended length bolts
M11-1.5 thread size
Complete 6-bolt set
High-strength grade 10.9 steel
#TOP 5

ATP Automotive Z-111 Flex-Plate

Z-111
Silver
ATP Automotive Z-111 Flex-Plate Cover
ATP Automotive Z-111 Automatic Transmission Flywheel Flex-Plate

The ATP Z-111 Flex-Plate is designed to meet factory balance standards, ensuring smooth operation and reducing vibrations in your vehicle’s transmission system. It is made to fit specific vehicle models, so you can be confident it will match your car’s requirements perfectly. Being balanced to factory specifications means you get a part that helps maintain your transmission’s performance and longevity. Manufactured by ATP Transmission Parts, this flex-plate offers reliable quality and durability, making it a practical choice if you want a dependable component for your car’s automatic transmission system.

What We Like
Factory-balanced design
Vehicle-specific fit
Reliable brand quality
Reduces transmission vibrations
#TOP 6

Michigan Motorsports LS Flexplate 6-Bolt SFI 29.1

MM24FLXPBL1
Michigan Motorsports LS Flexplate 6-Bolt SFI 29.1 Cover
Michigan Motorsports LS Flexplate | 6-Bolt Dished SFI 29.1 Rated Flexplate | Quick-Rev Black Design | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS Engines | TH350 TH400 700R4 4L60 4L80 6L80 Compatible

The Michigan Motorsports LS Flexplate is built to handle the demands of high-performance LS engines, including popular sizes like 4.8L, 5.3L, and 6.2L. This flexplate is designed with a strong certification that ensures it can withstand high speeds and heavy loads, giving you peace of mind during intense driving. Its 6-bolt design guarantees a perfect fit and secure connection with your engine, improving overall drivetrain reliability. Plus, it’s lightweight to help your engine respond faster and rev quicker, enhancing your driving experience. It also works with many GM transmissions, making it a versatile choice for upgrades or engine swaps.

What We Like
SFI 29.1 Certified Strength
6-Bolt LS Engine Fitment
Lightweight Quick Rev Design
Wide Transmission Compatibility
#TOP 7

Speedway Motors 168 Tooth Flexplate for 1986-1997 SBC 1-Piece Rear Main Seal

91048364
Plain
168-Tooth
Speedway Motors 168 Tooth Flexplate for 1986-1997 SBC 1-Piece Rear Main Seal Cover
Speedway Motors 168 Tooth Flexplate for 1986-1997 SBC with 1-Piece Rear Main Seal, External Balance Replacement for 305/350 Engines, Ideal for Engine or Transmission Installs

The Speedway Motors 168 Tooth Flexplate is designed specifically for 1986-1997 Small Block Chevy engines with a 1-piece rear main seal. This direct-fit part ensures your engine or transmission install goes smoothly by matching your vehicle’s original setup. With its reliable 168-tooth design, it’s perfect for 305 and 350 engine models, giving you the right fit and function. Built tough for both street and performance use, this flexplate offers long-lasting durability. Installing this flexplate when you replace your engine or transmission helps guarantee proper engagement and smooth operation, saving you potential headaches down the road.

What We Like
Direct-fit design
Reliable 168-tooth configuration
Durable construction
Ideal for engine/transmission installs
#TOP 8

Allstar-26800 168T SFI Flexplate

ALL26800
168 Tooth SBC/BBC
Allstar-26800 168T SFI Flexplate Cover
Allstar Performance Flexplate, 168 Tooth, SFI 29.1, Steel, Internal Balance, 2-Piece Seal, compatible with Chevy V8, Each

The Allstar-26800 168T SFI Flexplate is designed to fit specific vehicles and has a package dimension of 35.306 L x 37.592 W x 2.794 H (centimetres) with a weight of 6.8 pounds. This product is made in the United States and belongs to the car flexplates category.

What We Like
Designed to fit specific vehicles
Lightweight
Manufactured in the United States
#TOP 9

Speedway Motors TH350/TH400 Dust Cover

9101735
Plain
Speedway Motors TH350/TH400 Dust Cover Cover
Speedway Motors Black Flywheel/Flexplate Dust Cover, Fits TH350 and TH400 Transmissions, Made of Steel Material, Keep Debris, Dirt and Grime Out of Your Transmission

The Speedway Dust Cover is designed to protect your TH-350 or TH-400 transmission from harmful debris, dirt, and grime, enhancing its lifespan. Its compatibility with Chevy and GM engines ensures a perfect fit, making installation smooth and straightforward. Built from durable materials, this cover serves as a reliable replacement for any rusted or worn stock covers, keeping your transmission clean. The slotted mounting holes allow for easy setup, providing you with precise dimensions for a hassle-free experience.

What We Like
Effective debris protection
Perfect fit for Chevy/GM
Durable and reliable construction
Easy installation with slotted holes
#TOP 10

RMSPO 2002902 Flexplate Bolt Kit for Chevy/Ford SBC

2002902
1/2 in
RMSPO 2002902 Flexplate Bolt Kit for Chevy/Ford SBC Cover
RMSPO Flywheel&Flexplate Bolt 2002902 for ARP Automatic Transmission Flexplate Bolts fits for Chevy/Ford sbc 400 327 307 283 267 265 262

The RMSPO Flexplate Bolts come as a set of six high-quality bolts, ready for easy installation right out of the box. These bolts are designed specifically for automatic transmissions and fit a range of Chevrolet and Ford Small Block engines, including popular models like the 400, 327, and 283. Thanks to precise machining and strict quality checks, you can trust these bolts to fit perfectly and perform reliably. Made from durable metal materials, this kit ensures long-lasting use, helping you keep your engine secure and running smoothly.

What We Like
Complete 6-piece set
Fits multiple Chevy/Ford engines
Precision machining
Durable metal construction
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are the symptoms of a bad flexplate?

Symptoms of a bad flexplate include clunking, grinding, chirping, or rattling noises from the rear of the engine when idling, knocking noise when shifting into drive or reverse, heavy vibrations felt through the driver's seat at normal speeds, rough-running engine, and loss of power at higher speeds.

2. What is the difference between a flywheel and a flexplate?

A flywheel is typically found in vehicles with manual transmissions, while a flexplate is found in automatic transmission vehicles. Both components are heavy, but the flexplate is thinner and lighter compared to the flywheel.

3. How much does it cost to replace a flexplate?

The cost to replace a flexplate can range from around $50 to $160 on average.

4. Can you start a car with a bad flexplate?

No, you cannot start a car with a bad flexplate. The flexplate has gear teeth that the starter gear meshes with to rotate the engine during startup.

5. What causes a flexplate to fail?

A flexplate can fail due to misalignment or excessive crankshaft flange run-out. Worn engines or poorly rebuilt engines can also contribute to flexplate cracking.

6. Do you have to remove the transmission to replace a flexplate?

Yes, in order to replace a flexplate, it is necessary to separate the engine from the transmission enough to access and remove the flexplate bolts.

Editor's Notes

During our car flexplates research, we found 24 car flexplates products and shortlisted 10 quality products. We collected and analyzed 6,587 customer reviews through our big data system to write the car flexplates list. We found that most customers choose car flexplates with an average price of $53.78.

The car flexplates are available for purchase. We have researched hundreds of brands and picked the top brands of car flexplates, including LOSTAR, DICMIC, Speedway Motors, ICT Billet, atp automotive. The seller of top 1 product has received honest feedback from 255 consumers with an average rating of 4.5.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.