Best Manual Transmission Input Shaft Seals of 2026

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

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Manual Transmission Input Shaft Seals are an essential component of any manual transmission system. These seals are designed to prevent fluid leakage from the input shaft, which can cause damage to the transmission and reduce its performance. Made from high-quality materials, these seals are durable and long-lasting, providing reliable protection against leaks and ensuring the smooth operation of the transmission. They are easy to install and are compatible with a wide range of manual transmission systems, making them a must-have for any automotive repair shop or DIY mechanic. Overall, Manual Transmission Input Shaft Seals are an essential part of any transmission system and are a smart investment for anyone looking to maintain their vehicle's performance and reliability.

At a Glance: Our Top Picks

ChangTa Input & Output Shaft Seal Set for 40HP Rotary Cutter Gearboxes Cover #TOP 1
ChangTa Input & Output Shaft Seal Set for 40HP Rotary Cutter Gearboxes
ftb score rating icon 9.8
National 8792S Oil Seal for Manual Transmission Cover #TOP 2
National 8792S Oil Seal for Manual Transmission
ftb score rating icon 9.7
USA Standard NV4500/NV5600/AX5/AX15/A535 Rear Seal Cover #TOP 3
USA Standard NV4500/NV5600/AX5/AX15/A535 Rear Seal
ftb score rating icon 9.5

Top 10 Manual Transmission Input Shaft Seals

#TOP 1

ChangTa Input & Output Shaft Seal Set for 40HP Rotary Cutter Gearboxes

Gearbox Seal Set
Black
ChangTa Input & Output Shaft Seal Set for 40HP Rotary Cutter Gearboxes Cover
Input & Output Shaft Seal Set for Rotary Cutter Gearbox - 40HP & 50HP - Replaces Oil Seals for Omni, ITG, Grizzly Gearboxes & More - 2 Pack

The ChangTa Rotary Cutter Seal is designed for rotary cutters with 40HP gearboxes from popular brands like Alamo, Rhino, and King Kutter, ensuring wide compatibility. It replaces several OEM part numbers, making it easy for you to find the right fit without hassle. The set includes input and output shaft seals crafted to fit specific shaft sizes, helping to keep your gearbox running smoothly by preventing leaks. Plus, the input shaft seal is built to last longer than original parts, protecting your system from dirt and preserving grease life. This means less maintenance and better performance for your equipment.

What We Like
Wide brand compatibility
OEM part replacements
Durable input shaft seal
Prevents impurities
#TOP 2

National 8792S Oil Seal for Manual Transmission

National
8792S
National 8792S Oil Seal for Manual Transmission Cover
National 8792S Oil Seal

The National 8792S Oil Seal is designed with a springless and single-lip design, making it a reliable choice for every type of repair. It has a temperature range of -40°F to 225°F / -40°C to 107°C, which allows it to effectively function in various temperatures. The oil seal also has good low temperature capability and low swell in hydrocarbon fluids, making it a durable and long-lasting option.

What We Like
Reliable and durable for every type of repair
Can function effectively in various temperatures
Good low temperature capability
Low swell in hydrocarbon fluids
#TOP 3

USA Standard NV4500/NV5600/AX5/AX15/A535 Rear Seal

ZMSEA19211
Factory
USA Standard NV4500/NV5600/AX5/AX15/A535 Rear Seal Cover
USA Standard Manual Transmission NV4500, NV5600, AX5, AX15 & A535 Rear Seal 4WD

The USA Standard Transmission Seal is designed to fit several manual transmission models, including NV4500, NV5600, AX5, and AX15, as well as the A535. This seal helps protect your transmission by preventing leaks and keeping dirt and debris out, ensuring smoother operation and longer transmission life. It also includes a Peugeot 4x4 seal, which is perfect if you own a Peugeot 4x4 vehicle, providing a reliable fit and protection. Additionally, the ZF 4x2 rear seal is part of the package, offering versatility for different driveline setups. With this seal, you can maintain your transmission’s performance and avoid costly repairs.

What We Like
Fits multiple transmission models
Prevents leaks and contamination
Includes Peugeot 4x4 seal
Includes ZF 4x2 rear seal
Enhances transmission durability
#TOP 4

Mytee Power Steering Gearbox Input Shaft Seal Kit

MPN5544861
1 - Pack
Mytee Power Steering Gearbox Input Shaft Seal Kit Cover
Mytee Products Power Steering Gearbox Input Shaft Seal Kit Replaces 5544861 5542261 5541351B 4531S 1685676C92 81485542261 85106779 8834 SHE5544861 8148-5541351B 2585-853-C 5330-01-342-9033 1685-676-C

The Mytee Input Shaft Seal Kit is designed to replace worn or damaged seals in your power steering gearbox, specifically matching OEM part number 5544861. This kit helps maintain the proper function of your steering system by preventing leaks and ensuring smooth operation. With its focus on the input shaft of manual transaxles, it offers a reliable solution for keeping your vehicle's steering responsive and safe. Additionally, Mytee backs this product with an 18-month warranty or up to 100,000 miles, giving you confidence and peace of mind after installation.

What We Like
OEM part replacement
Input shaft focus
Manual transaxle compatibility
18-month warranty coverage
#TOP 5

National 710693 Manual Trans Input Shaft Seal

National
710693
National 710693 Manual Trans Input Shaft Seal Cover
National 710693 Trans Case Input Shaft Seal

The National Trans Shaft Seal is designed to keep your vehicle’s transmission running smoothly by providing a strong, flexible seal. Its spring-loaded, multi-lip design helps prevent leaks, giving you peace of mind during operation. This seal works well in a wide temperature range from -40°F to 400°F, so it can handle both freezing winters and hot engine conditions without failing. Plus, it's compatible with many different automotive fluids, making it a versatile choice for various repair jobs. With this seal, you get reliable protection that helps extend the life of your transmission parts.

What We Like
Spring-loaded multi-lip design
Wide temperature tolerance
Compatible with many fluids
Durable fluoroelastomer material
#TOP 6

SKF Right Transmission Output Shaft Seal for Honda Accord V6 2005-2015

4113707252
SKF Right Transmission Output Shaft Seal for Honda Accord V6 2005-2015 Cover
SKF Right Transmission Output Shaft Seal compatible with Honda Accord 3.0L 3.5L V6 2005-2015

The SKF Accord Output Seal is designed specifically for Honda Accord models with 3.0L and 3.5L V6 engines from 2005 to 2015. This genuine SKF part ensures reliable performance and long-lasting durability, giving you confidence in your vehicle’s transmission system. It comes with original packaging and all the necessary hardware, making installation straightforward and convenient. As a direct replacement part, it fits perfectly, helping you avoid compatibility issues and saving you time on repairs. Before purchasing, you can easily confirm if it fits your vehicle, ensuring a hassle-free buying experience.

What We Like
Genuine SKF quality
Includes original hardware
Direct replacement fit
Wide model compatibility
#TOP 7

JKSXIX Manual Transmission Selector Rod Seal

automotive-manual-transmission-seals
JKSXIX Manual Transmission Selector Rod Seal Cover
JKSXIX Seal Manual Trans Selector Rod 15 X 21 X 5mm for 330i 2001-2003,for 530i 1975-1978 1994-1995 2001-2003,for 540i 1997-2003 E82 E88 23128677736 327299

The JKSXIX Selector Rod Seal is designed to fit various BMW models, including the 330i, 530i, and 540i across multiple years. This product ensures compatibility with your vehicle by covering a wide range of models, so you can easily find the right fit. It comes with specific part numbers (23128677736 and 327299) to help you verify you have the exact component needed. The seal itself is built to meet strict industry quality standards, giving you confidence in its durability and consistent performance. Plus, its compact size and lightweight design make installation straightforward and hassle-free for your manual transmission system.

What We Like
Wide BMW model compatibility
Exact part number matching
Meets industry quality standards
Lightweight and compact design

REPLACEMENTKITS.COM Input Yoke Seal for OMC Volvo Penta Sterndrives

3852272; 23492730
REPLACEMENTKITS.COM Input Yoke Seal for OMC Volvo Penta Sterndrives Cover
REPLACEMENTKITS.COM Brand Input Yoke Seal Compatible with OMC Volvo Penta Cobra SX Sterndrives Replaces 3852272 & 23492730

The REPLACEMENTKITS.COM Yoke Seal is designed to fit a range of OMC Volvo Penta Sterndrives, including models from 1994 and newer, as well as earlier V6 and V8 engines from 1986 to 1993, plus 3.0 liter 4-cylinder models from 1990 to 1993. This seal features a premium Viton sealing lip combined with a Teflon lip, providing excellent durability and resistance to wear, which helps you maintain a reliable seal and prevent leaks. It replaces older part numbers 3852272, 23492730, and GLM 87100, making it a convenient option if you need an exact match. Plus, the product comes from an American-owned company known for high-quality aftermarket parts, giving you confidence in its performance.

What We Like
Wide compatibility with OMC Volvo Penta models
Durable Viton and Teflon sealing lips
Replaces multiple older part numbers
High-quality aftermarket manufacturing
#TOP 9

National 3638 Manual Transmission Seal

National
3638
National 3638 Manual Transmission Seal Cover
National Oil Seals 3638 Man Trans Input Shaft Seal

The National Transmission Seal is designed to keep your vehicle’s manual transmission running smoothly. It resists swelling when exposed to hydrocarbon fluids, so you won’t have to worry about damage from common automotive oils. The multi-lip, spring-loaded design ensures a tight fit, helping to prevent leaks and maintain performance. Plus, this seal works well even in cold conditions, so it won’t crack or fail when temperatures drop. It handles a wide temperature range from -40°F to 225°F, making it reliable for various climates and driving situations.

What We Like
Hydrocarbon fluid resistance
Spring-loaded multi-lip design
Low temperature performance
Wide temperature range
#TOP 10

National Man Trans Input Shaft Seal

National
481181N
1 Count (Pack of 1)
National Man Trans Input Shaft Seal Cover
National 481181N Man Trans Input Shaft Seal

This manual transmission input shaft seal is designed with a spring loaded single-lip, providing reliable performance for every type of repair. The seal boasts a temperature range of -20°F to 300°F / -29°C to 49°C, and resistance to EP lubricants and low swell in hydrocarbon fluids.

What We Like
Reliable performance for every type of repair
Resistance to EP lubricants and low swell in hydrocarbon fluids
Spring loaded single-lip design
Buying Guide Image

Frequently Asked Questions (FAQs)

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

One of the most common symptoms of a bad shaft seal is fluid leaking from the front of the transfer case. The rubber seals can dry out or crack, leading to leaks of gear oil or transmission fluid.

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

The cost of replacing a rear transmission shaft seal can range from $600 to $900. Factors such as location and the type of car can affect the overall cost. The rear transmission seal, also known as the rear main seal, is positioned between the engine and transmission to prevent oil leaks.

3. What type of seals are used where the drive shafts enter into the gearbox?

Oil seals are used to seal rotating shafts and protect the gearbox from dirt and prevent lubricant leakage.

4. Are transmission seals easy to replace?

While most seals are affordable and easy to replace, some may require extensive dismantling to access. For instance, replacing gearbox oil seals usually requires removing the gearbox, making it a task best left to a professional garage.

5. What happens if shaft seal breaks?

When CV axle shaft seals fail, fluid can leak from the transmission and differential. This leakage can lead to overheating and potential damage to the transmission or differential.

6. How do you know if a mechanical seal is failing?

Signs of a failing mechanical seal include grooves, notches, squealing or popping sounds, uneven wear track, fractured or cracked seal face, cracked or chipped seal ring, and accumulation of carbon dust on the outside of the seal.

7. 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's important to address the problem and fix the seal to ensure proper transmission function and avoid further damage.

8. How serious is a transmission seal leak?

A leaking transmission seal should not be ignored as it can worsen over time. If left untreated, the transmission may not perform as intended, resulting in delayed engagement when placed in gear.

9. What are the different types of shaft seals?

There are three basic types of shaft seals: A, B, and C. If the seal has a dust lip, an S is added. If it seals for two different fluids from both directions, a D is added. The type O indicates no garter spring.

10. How many seals does a manual transmission have?

In front-wheel drive vehicles, there are typically two rear transmission seals, one for each axle. These seals, also referred to as the output shaft seal or driveshaft seal, prevent fluid from escaping where the driveshaft yoke enters the transmission.

Editor's Notes

During our manual transmission input shaft seal research, we found 24 manual transmission input shaft seal products and shortlisted 10 quality products. We collected and analyzed 2,838 customer reviews through our big data system to write the manual transmission input shaft seals list. We found that most customers choose manual transmission input shaft seals with an average price of $14.88.

The manual transmission input shaft seals are available for purchase. We have researched hundreds of brands and picked the top brands of manual transmission input shaft seals, including ChangTa, National, USA Standard Gear, Mytee Products, Sixity Auto. The seller of top 1 product has received honest feedback from 123 consumers with an average rating of 4.8.

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.