Best Automatic Transmission Input Shaft Seals of 2026

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

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Automatic transmission input shaft seals are an essential component in any vehicle's transmission system. These seals are responsible for preventing fluid leaks and maintaining the proper pressure within the transmission. They are typically made of high-quality materials such as rubber or silicone to ensure durability and longevity. These seals are designed to fit snugly around the input shaft of the transmission, creating a tight seal that prevents any oil or fluid from leaking out. Investing in high-quality automatic transmission input shaft seals can save drivers from costly repairs and ensure their vehicle runs smoothly for years to come.

At a Glance: Our Top Picks

SKF 99187 Speedi-Sleeve And Tool Kit Cover #TOP 1
SKF 99187 Speedi-Sleeve And Tool Kit
ftb score rating icon 9.9
COOL STAR DPS6 6DCT250 Transmission Oil Seal Kit for Ford Fiesta and Focus Cover #TOP 2
COOL STAR DPS6 6DCT250 Transmission Oil Seal Kit for Ford Fiesta and Focus
ftb score rating icon 9.8
World American 131008K Pinion Seal Kit Cover #TOP 3
World American 131008K Pinion Seal Kit
ftb score rating icon 9.6

Top 10 Automatic Transmission Input Shaft Seals

#TOP 1

SKF 99187 Speedi-Sleeve And Tool Kit

SKF
99187
Silver
SKF 99187 Speedi-Sleeve And Tool Kit Cover
SKF 99187 Speedi Sleeve and Tool Kit, Inch, 1.872in Shaft Diameter, 0.563in Width

The SKF 99187 Speedi-Sleeve And Tool Kit is designed for repairing the tough seal surface of automatic transmission input shaft seals quickly. It includes a precision ground stainless steel sleeve with part number 99187. The package dimension of the kit is 11.43 cms L x 10.921 cms W x 2.54 cms H and weighs 0.022 pounds.

What We Like
Quick and easy repair for tough seal surface
Precision ground stainless steel sleeve for durability
Compact and lightweight design for easy transportation
#TOP 2

COOL STAR DPS6 6DCT250 Transmission Oil Seal Kit for Ford Fiesta and Focus

does not have
COOL STAR DPS6 6DCT250 Transmission Oil Seal Kit for Ford Fiesta and Focus Cover
DPS6 6DCT250 Automatic Transmission Oil Seal Set Front Seals Kit Transmission Input Shaft Seal and Output Shaft Seal Compatible with Ford Fiesta Fusion 2011-2018

The COOL STAR Transmission Seal is designed to fit Ford Fiesta models from 2012 and newer, as well as Ford Focus vehicles from 2011 onward. This compatibility ensures you get the right fit for your car, making installation easier and more reliable. It also works with Ford B-Max and EcoSport models from 2012 and 2013 respectively, giving you more options if you own one of these vehicles. The kit includes three transmission oil seals, so you have all the necessary parts to complete your repair or maintenance job. Made from durable aluminum alloy, these seals offer long-lasting protection for your transmission system.

What We Like
Wide vehicle compatibility
Complete seal kit
Durable aluminum alloy
Direct replacement fit
#TOP 3

World American 131008K Pinion Seal Kit

131008K
World American 131008K Pinion Seal Kit Cover
World American 131008K Seal

The World American Pinion Seal is designed to keep your heavy-duty drivetrain running smoothly by preventing gear oil leaks and maintaining the right pressure on the pinion shaft. This kit is perfect if you need a seal that fits just right, matching original equipment standards for reliable use in tough conditions. Made from strong materials, it ensures long-lasting performance even under high torque, making it ideal for trucks, trailers, and vocational vehicles. Plus, the included pinion nut helps you apply the correct torque for a secure fit, which means your differential will work properly and your bearings will last longer.

What We Like
OE-matched fitment
Leak prevention
Durable materials
Includes pinion nut
Long service life
#TOP 4

SKF Seal 19748 Automatic Transmission Input Shaft Seal

SKF
19748
Grey

The SKF Transmission Seal is designed to keep your vehicle’s lubricants safely inside while preventing dirt and other contaminants from getting in. This means your transmission parts stay well-protected and work smoothly for longer. The seal uses specially developed materials that hold up well even under tough conditions, so you can count on it to perform reliably whether you’re driving in extreme heat or cold. Plus, it works well with different fluids and temperatures, ensuring your transmission stays sealed and efficient no matter what. With this seal, you get durable protection that helps maintain your vehicle’s performance and reduces maintenance needs.

What We Like
Effective lubricant retention
Durable in extreme conditions
Wide fluid compatibility
Strong contamination protection
#TOP 5

SKF Automatic Transmission Seal 534948

SKF
534948

The SKF Transmission Seal is designed to keep your vehicle’s lubricants secure while preventing harmful dirt and debris from entering. This means your transmission stays protected and performs better over time. It uses specially developed materials that work well even in harsh conditions, ensuring the seal remains reliable when you need it most. You’ll also benefit from its strong resistance to different fluids and temperatures, which helps the seal last longer and maintain optimal function. Overall, this seal offers dependable protection to keep your transmission running smoothly.

What We Like
Lubricant retention
Contaminant protection
Durable in harsh conditions
Fluid compatibility
#TOP 6

SKF Seal 22049 for Cars

SKF
22049
SKF Seal 22049 for Cars Cover
SKF 22049 Transfer Case Rear Output Shaft Seal Spring Loaded with Boot Compatible with Chevrolet 3/4 Ton C2500 K2500 R2500 V2500 Series 3400 3500 3600 3700

This car wheel seal from SKF Seal 22049 for Chevrolet, GMC, and Dodge can help to keep lubricants in and contaminants out. It is optimized to perform reliably even in extreme operating conditions, and has superior fluid and temperature compatibility. Additionally, it provides excellent contamination exclusion, making it a reliable choice for car owners.

What We Like
Keeps lubricants in and contaminants out
Optimized to perform reliably in extreme operating conditions
Superior fluid and temperature compatibility
#TOP 7

SKF Automatic Transmission Seal 38731

SKF
38731

The SKF Transmission Seal is designed to protect your vehicle’s transmission by keeping lubricants inside and blocking dirt and debris from getting in. This seal uses specially formulated materials that hold up well even under tough conditions, so you can count on it to perform reliably. It also works well with different fluids and temperatures, ensuring your transmission stays safe no matter the environment. Plus, it does a great job at keeping contaminants out, which helps extend the life of your transmission and maintain smooth operation. This seal offers dependable protection for your vehicle’s transmission system.

What We Like
Effective lubricant retention
Durable in harsh conditions
Wide fluid compatibility
Strong contamination resistance
#TOP 8

TRANSPEED 4L60E Transmission Oil Seal Set

4L60E
TRANSPEED 4L60E Transmission Oil Seal Set Cover
TRANSPEED 4L60E Auto Transmission Oil Seal Set 4L60 Input & Output Transfer Shaft Oil Seals Compatible with Buick For Cadillac Chevy

The TRANSPEED 4L60E Seal Kit is designed to fit a variety of vehicles, including certain models from Buick, Cadillac, and Chevy. Made from high-quality synthetic rubber, these seals resist high temperatures and oil corrosion, ensuring durability over time. The precise design and optimized lip help you install them easily, minimizing the risk of leaks due to improper fitting. Plus, their user-friendly design makes replacing seals quick and efficient, which can save you both time and money on maintenance.

What We Like
Durable synthetic rubber material
Easy installation and fitting
Resistance to high temperatures
Cost-effective maintenance solution
#TOP 9

SKF 13685 Transmission Seal

SKF
13685
SKF 13685 Transmission Seal Cover
SKF Seal 13685 For Ford Mercury Mazda Lincoln

The SKF Transmission Seal is designed to keep your vehicle’s lubricants where they belong while blocking dirt and debris from getting inside. This seal uses special materials that perform well even under tough conditions, so you can rely on it whether you’re dealing with heat, cold, or heavy use. It also works smoothly with different fluids and temperatures, making sure your transmission stays protected and runs efficiently. Plus, its strong design helps keep out contaminants, which means less wear and tear on your parts and a longer-lasting, trouble-free driving experience.

What We Like
Lubricant retention
Contaminant protection
Durable under extreme conditions
Fluid and temperature compatibility
#TOP 10

SKF 16485 Transfer Case Seal

SKF
16485
SKF 16485 Transfer Case Seal Cover
SKF 16485 Transfer Case Rear Output Shaft Seal Spring Loaded Dual Lip Multiple Fluid Control Compatible with Ford Aerostar Bronco II Excursion Expedition Explorer Sport

The SKF Transfer Case Seal is designed to provide exceptional performance for your vehicle, ensuring a reliable seal against dirt and contaminants. With its advanced synthetic rubber construction, it can withstand extreme temperatures, from -40°F to 400°F, making it ideal for various driving conditions. The high-quality carbon steel components are coated to resist rust, extending the seal's life. Additionally, the unique lip design meets or exceeds original equipment specifications, ensuring a tight and effective seal to keep your transmission fluid contained and functioning properly.

What We Like
Durable synthetic rubber material
High-temperature resistance
Rust-resistant carbon steel
Effective dirt exclusion
Long service life
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How much does it cost to replace transmission shaft seal?

The cost of replacing a transmission shaft seal can range between $600 and $900. Factors such as your location and the type of car you own can affect the overall cost. This seal, also known as the rear main seal, is located between the engine and transmission. Its purpose is to prevent oil leakage and seal the crankshaft.

2. What are the symptoms of a bad shaft seal?

One common symptom of a faulty front output shaft seal is fluid leakage from the front of the transfer case. If the rubber seals in the transfer case dry out or crack, they can lead to leaks of gear oil or transmission fluid.

3. What causes a transmission seal to break?

Transmission seals in automatic transmissions can wear out and crack over time. This is often due to exposure to high temperatures or heat. Additionally, excessive transmission fluid can also contribute to the deterioration of these seals.

4. Can you drive with a bad transmission seal?

While it may be possible to drive with a leaking transmission seal, it is not advisable. It is recommended to address the issue promptly and have the seal replaced to prevent further damage or complications.

5. How do I know if my input shaft is bad?

Signs of a bad input shaft include strange noises in neutral, persistent noises from the gears, and sudden gear slips. If you experience any of these symptoms, it is recommended to have your input shaft checked by a professional.

6. What happens when a transmission seal goes bad?

When transmission seals and gaskets fail, it can lead to fluid leaks that can cause significant damage to the transmission. Even though they are small parts, their failure can result in complete transmission failure.

7. Are transmission seals easy to replace?

While most transmission seals are inexpensive, they can be challenging to replace. Many seals are located in areas that require extensive dismantling to access. It is often recommended to have a professional handle the replacement, especially for gearbox oil seals that may require removing the entire gearbox.

Editor's Notes

During our automatic transmission input shaft seal research, we found 24 automatic transmission input shaft seal products and shortlisted 10 quality products. We collected and analyzed 2,847 customer reviews through our big data system to write the automatic transmission input shaft seals list. We found that most customers choose automatic transmission input shaft seals with an average price of $13.67.

The automatic transmission input shaft seals are available for purchase. We have researched hundreds of brands and picked the top brands of automatic transmission input shaft seals, including SKF, COOL STAR, World American, TRANSPEED. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

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.