Best Car Transmission Gaskets of 2026

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

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Car transmission gaskets are essential components in a vehicle's transmission system that prevent fluid leaks and ensure proper functioning of the vehicle. They are made from high-quality materials such as rubber, cork, and silicone, and come in a variety of shapes and sizes to fit different types of vehicles. These gaskets are designed to withstand high temperatures and pressures, and provide a reliable seal for the transmission system. Regular maintenance and replacement of transmission gaskets is crucial in preventing damage to the transmission system and ensuring the longevity of the vehicle.

At a Glance: Our Top Picks

ApplianPar CVT Gasket for Subaru Cover #TOP 1
ApplianPar CVT Gasket for Subaru
ftb score rating icon 9.9
GM Genuine Parts 24221350 Transmission Valve Body Gasket Cover #TOP 2
GM Genuine Parts 24221350 Transmission Valve Body Gasket
ftb score rating icon 9.8
GM Genuine Parts 12337931 Transmission Fluid Pump Cover Gasket Cover #TOP 3
GM Genuine Parts 12337931 Transmission Fluid Pump Cover Gasket
ftb score rating icon 9.6

Top 10 Car Transmission Gaskets

#TOP 1

ApplianPar CVT Gasket for Subaru

AP6653313
ApplianPar CVT Gasket for Subaru Cover
ApplianPar CVT Transmission Cover Gasket for Subaru Forester Impreza Crosstrek Legacy Outback 2014-2018

The ApplianPar CVT Gasket is designed specifically for various Subaru models, including the Crosstrek, Forester, Impreza, Legacy, and Outback from 2012 to 2018. This gasket ensures a perfect fit for 2.0L and 2.5L CVT automatic transmission models, helping you maintain optimal performance. By using this gasket, you can prevent leaks and ensure a secure seal, which is crucial for the longevity of your vehicle's transmission. Additionally, it is important to note that this product does not fit WRX or STI models, so double-check compatibility before purchase.

What We Like
Perfect fit for specific models
Prevents transmission leaks
Enhances vehicle performance
Easy installation
#TOP 2

GM Genuine Parts 24221350 Transmission Valve Body Gasket

24221350
GM Genuine Parts 24221350 Transmission Valve Body Gasket Cover
GM Genuine Parts 24221350 Automatic Transmission Valve Body Spacer Plate Gasket

The GM Transmission Gasket is designed as a direct replacement for your GM vehicle’s original part, ensuring you maintain the quality and performance your car deserves. It meets GM's exact specifications, meaning it fits perfectly and works just like the factory component. This gasket offers reliability and long-lasting durability, so you can trust it to perform well over time. Plus, it’s crafted with professionals in mind, providing you with a high-quality product that’s easy to install and dependable. Choosing this gasket means you get the convenience and peace of mind that comes with GM’s trusted standards.

What We Like
OEM quality and fit
Reliable and durable
Exact GM specifications
Professional-grade design
#TOP 3

GM Genuine Parts 12337931 Transmission Fluid Pump Cover Gasket

12337931
GM Genuine Parts 12337931 Transmission Fluid Pump Cover Gasket Cover
GM Genuine Parts 12337931 Automatic Transmission Fluid Pump Cover Gasket

The GM Transmission Gasket is designed as a direct replacement part recommended by GM for your vehicle, ensuring you get the same quality as the original factory component. This means you can trust it to fit perfectly and work reliably just like the part that came with your car. It is made to meet GM’s exact specifications, so you won’t have to worry about compatibility or performance issues. Plus, being manufactured in the United States assures you of its quality and durability. Choosing this gasket helps maintain your vehicle’s transmission system with ease and confidence.

What We Like
GM recommended replacement
Factory-quality reliability
Exact GM specifications
Made in the USA
#TOP 4

Fel-Pro TOS 18733

TOS 18733
Fel-Pro TOS 18733 Cover
FEL-PRO TOS 18733 Transmission Oil Pan Gasket for Ram 1500

The Fel-Pro TOS 18733 Automatic Transmission Gasket is a high-quality gasket that meets or exceeds all original equipment specifications. With its application specific design, it ensures a perfect fit for your car's transmission. This gasket is engineered to exacting standards using proprietary design, engineering, and manufacturing processes. Its unsurpassed quality guarantees a reliable seal, preventing leaks and ensuring optimal performance. Whether you have a small or large transmission, Fel-Pro has you covered. Trust in the validated fit, form, and function of the Fel-Pro TOS 18733 Automatic Transmission Gasket to provide you with the convenience and peace of mind you need for your transmission.

What We Like
Meets OEM specifications
Perfect fit for your transmission
Unsurpassed quality
#TOP 5

Moroso GM Turbo 350 Transmission Gasket

93102
Black
Moroso GM Turbo 350 Transmission Gasket Cover
Moroso Gasket, Trans, GM Turbo 350 (93102)

The Moroso GM Transmission Gasket offers a durable design made from 40 durometer rubber bonded to a solid steel frame. This combination ensures you get a gasket that lasts longer than traditional cork options, giving you reliable service for years. You won’t need to use any sealant with this gasket, making both installation and removal of your transmission pan faster and easier. Plus, its full 3/16-inch thickness provides a strong and secure fit, helping to prevent leaks and maintain your vehicle’s performance. If you want a dependable and user-friendly gasket, the Moroso GM Transmission Gasket is a great choice.

What We Like
Durable rubber-steel construction
No sealant needed
Easy installation and removal
Long-lasting performance
Thick, secure fit
#TOP 6

Fel-Pro TOS 18633 Transmission Gasket

TOS 18633
Stock
Fel-Pro TOS 18633 Transmission Gasket Cover
FEL-PRO TOS 18633 Automatic Transmission Gasket

The Fel-Pro TOS 18633 Automatic Transmission Gasket is a high-quality gasket designed specifically for car transmissions. It meets or exceeds all original equipment specifications, ensuring a perfect fit for your vehicle. With its unsurpassed quality, you can trust that this gasket will provide a reliable seal and prevent any leakage. The gasket has been validated for fit, form, and function, guaranteeing its effectiveness in maintaining the proper functioning of your transmission. Each Fel-Pro gasket is engineered to exacting standards, using proprietary design, engineering, and manufacturing processes. With this transmission gasket, you can have peace of mind knowing that your transmission is protected and performing optimally.

What We Like
Perfect fit
High-quality
Reliable seal
#TOP 7

Moroso GM Turbo 400 Transmission Gasket

93103
Black
Moroso GM Turbo 400 Transmission Gasket Cover
MOROSO GASKET, TRANS, GM TURBO 400

The Moroso Turbo 400 Gasket is made from durable 40 durometer rubber bonded to a solid steel frame, giving you a reliable seal that holds up well over time. This design means you don’t need to use any sealant, making it easier and quicker to remove or install your transmission pan without the mess or hassle. Plus, the gasket’s precise fit helps ensure a tight seal, preventing leaks and saving you from potential transmission problems. Its lightweight and compact packaging also make it simple to handle and store until you’re ready to use it.

What We Like
Durable rubber construction
Steel frame support
No sealant needed
Easy installation and removal
#TOP 8

FEL-PRO TOS 18752 Transmission Gasket

TOS 18752
Factory
One Size
FEL-PRO TOS 18752 Transmission Gasket Cover
FEL-PRO TOS 18752 Transmission Oil Pan Gasket

The FEL-PRO Transmission Gasket is designed specifically for various Chevrolet Silverado models, ensuring a precise fit for your vehicle. Before making a purchase, you can easily confirm compatibility by entering your vehicle's details, which helps you avoid any mismatches. This gasket meets or exceeds original equipment standards, giving you confidence in its quality and durability. Its application-specific design guarantees that it will fit seamlessly, enhancing your vehicle's performance and longevity.

What We Like
Compatibility assurance
Meets OEM standards
Application-specific design
High-quality materials
#TOP 9

GoaMotors CVT Transmission Gasket for Subaru 2012-2018

31338AA020
GoaMotors CVT Transmission Gasket for Subaru 2012-2018 Cover
GoaMotors Transmission Gasket Compatible with Subaru Crosstrek 2013-2018 Forester 2014-2018 Impreza 2012-2018 Legacy 2013-2018 Outback 2013-2018 CVT Transmission Cover Gasket Replace 31338AA020

The GoaMotors Subaru Gasket is designed to replace the original transmission cover gasket with part number 31338AA020, making it easy for you to find the correct fit. It works perfectly with Subaru models like the Crosstrek (2013-2018), Forester (2014-2018), Impreza 2.0L (2012-2018), Legacy 2.5L (2013-2018), and Outback 2.5L (2013-2018), so you can be confident it suits your vehicle. This gasket is specially made for 2.0L and 2.5L CVT automatic transmissions, giving you a reliable seal for your transmission system. With this gasket, you ensure better protection and performance for your Subaru’s transmission.

What We Like
Exact replacement part
Wide Subaru model compatibility
Fits 2.0L and 2.5L CVT models
Improves transmission seal
#TOP 10

Allstar Transmission Tail Shaft Seal and Bushing Kit (ALL72152)

Allstar Transmission Tail Shaft Seal and Bushing Kit (ALL72152) Cover
Allstar Performance Tailshaft Housing Seal, Bushing, Rubber/Steel, Bert/Brinn/Powerglide / TH350 / Saginaw/Muncie Transmissions, Each

Allstar Tail Shaft Kit is a vehicle-specific auto part that includes a tail shaft seal and bushing. The tail shaft bushing is located inside the transmission tail shaft housing and is a regular wear item. It is recommended to replace the kit when replacing a tail shaft seal or when a driveshaft failure has occurred. This kit is designed to ensure the longevity of your transmission and prevent leaks. By using Allstar Tail Shaft Kit, you can save time and money on repairs in the long run.

What We Like
Prevents leaks
Ensures longevity of transmission
Vehicle specific fit
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What gaskets are on a transmission?

There are several types of gaskets found on a transmission, including the transmission pan gasket, transfer case gasket set, transmission gasket set, universal automatic transmission power take off gasket, overdrive shift button kit, performance manual trans gasket set, and transfer case drain plug gasket.

2. How do I know if my transmission gasket is bad?

Signs of a bad transmission gasket include a puddle of automatic transmission fluid under the vehicle, low transmission fluid levels, and transmission slippage or other performance issues resulting from low fluid levels.

3. Can I change transmission gasket myself?

Yes, changing a transmission pan gasket is a job that can be done by yourself with basic tools. All you need are rubber gloves, hand tools, and an inch-pound torque wrench to successfully change the transmission pan gasket in your car.

4. Can you drive with a bad transmission seal?

While it may be safe to drive with a leaking transmission, it is not advisable. It is recommended to fix the problem as soon as possible.

5. What causes transmission gasket to leak?

One of the main causes of transmission gasket leaks is a cracked pan gasket. If there is any damage or fray in the gasket, it will need to be replaced as the fluid will continue to seep out. This is a relatively easy fix that requires purchasing a new gasket.

6. What happens when a transmission seal goes bad?

When a transmission seal goes bad, it can lead to fluid leaks that can burn up the transmission unit. Despite being small parts, seal and gasket failures are likely to result in full transmission failure.

7. How do you stop a transmission gasket from leaking?

You can try using a transmission seal stop leak product, such as One Seal Stop Leak or Transmission Seal Stop Leak, to seal the leak. It is recommended to also check your transmission fluid level after using such products.

Editor's Notes

During our car transmission gasket research, we found 24 car transmission gasket products and shortlisted 10 quality products. We collected and analyzed 8,012 customer reviews through our big data system to write the car transmission gaskets list. We found that most customers choose car transmission gaskets with an average price of $25.77.

The car transmission gaskets are available for purchase. We have researched hundreds of brands and picked the top brands of car transmission gaskets, including ApplianPar, GM GENUINE PARTS, Fel-Pro, Moroso, GoaMotors. The seller of top 1 product has received honest feedback from 2,395 consumers with an average rating of 4.9.

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.