Best Manual Transmission Input Shaft Seals of 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
Top 10 Manual Transmission Input Shaft Seals
ChangTa Input & Output Shaft Seal Set for 40HP Rotary Cutter Gearboxes
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.
National 8792S Oil Seal for Manual Transmission
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.
USA Standard NV4500/NV5600/AX5/AX15/A535 Rear Seal
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.
Mytee Power Steering Gearbox Input Shaft Seal Kit
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.
National 710693 Manual Trans 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.
SKF Right Transmission Output Shaft Seal for Honda Accord 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.
JKSXIX Manual Transmission Selector Rod Seal
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.
REPLACEMENTKITS.COM Input Yoke Seal for OMC Volvo Penta Sterndrives
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.
National 3638 Manual Transmission 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.
National 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.
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.
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.
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.