SX-3857 TIMKEN Rear Transmission Shaft Seal Manual Qz G2500

Review TIMKEN Rear Transmission Output Shaft Seal For Gmc Manual Qz for GMC G2500 1983–1989

The Timken SX-3857 rear transmission shaft seal is an essential component for maintaining the performance and longevity of a 1983-1989 GMC G2500 with a manual QZ transmission. This seal is specifically designed to prevent transmission fluid from leaking out of the rear transmission shaft.

This seal is made of high-quality materials, including a durable elastomeric material for the seal body and a robust metal housing to provide extra strength and protection. The elastomeric material is engineered to withstand the extreme pressures and temperatures encountered in transmission systems, ensuring a tight seal and preventing fluid loss.

The Timken SX-3857 seal features a unique tapered design that allows it to fit snugly into the transmission shaft housing while also allowing for easy installation and removal. The tapered design also helps to prevent leaks by ensuring that the seal makes a complete seal with the shaft and the housing.

The seal comes packaged with a new O-ring, which is used to create a seal between the seal and the transmission case. The O-ring is made of the same high-quality elastomeric material as the seal body and is designed to last for the life of the seal.

Installing the Timken SX-3857 seal is a straightforward process, but it is essential to follow the correct procedure to ensure a proper installation. The seal should be installed with the tapered edge facing towards the transmission case, and the O-ring should be installed on the outside of the seal.

In summary, the Timken SX-3857 rear transmission shaft seal is a vital component for maintaining the performance and reliability of a 1983-1989 GMC G2500 with a manual QZ transmission. Its high-quality materials, tapered design, and easy installation make it an excellent choice for those looking to prevent transmission fluid leaks and maintain their vehicle's optimal performance.

Pros and Cons of Buying a Timken SX-3857 Rear Transmission Shaft Seal for 1983-1989 GMC G2500

The Timken SX-3857 rear transmission shaft seal is a commonly recommended replacement part for the rear transmission on 1983-1989 GMC G2500 trucks. Like any automotive part purchase, there are advantages and disadvantages to consider. In this analysis, we will discuss the pros and cons of buying this particular seal.

1. Superior Quality: Timken is a renowned brand in the automotive industry for producing high-quality parts. The SX-3857 seal is engineered to provide a reliable seal against transmission fluid leakage, ensuring optimal performance and longevity.

2. OEM (Original Equipment Manufacturer) Replacement: This seal is an exact match to the original equipment used in the GMC G2500, ensuring a proper fit and function.

3. Reduces Noise and Vibration: A worn or damaged seal can result in transmission noise and vibration. Installing a new Timken SX-3857 seal can significantly reduce these issues, enhancing the overall driving experience.

4. Prevents Transmission Damage: A leaking seal can lead to transmission fluid loss, potentially causing damage to other components. Replacing the seal promptly with a high-quality part like the Timken SX-3857 can help prevent costly repairs down the line.

1. Cost: The Timken SX-3857 seal is priced higher than some aftermarket alternatives. However, the superior quality and OEM fit may justify the additional cost for some consumers.

2. Installation Complexity: Installing a rear transmission shaft seal can be a challenging task for those without automotive experience. It may require specialized tools and knowledge, potentially adding to the overall cost and time investment.

3. Availability: The Timken SX-3857 seal may not be readily available at local auto parts stores and may need to be ordered online or from a specialist.

The Timken SX-3857 rear transmission shaft seal is a high-quality, OEM replacement part that offers several advantages, including superior sealing performance, reliable fit, and reduced noise and vibration. While there are some disadvantages, such as cost and installation complexity, the benefits may outweigh the drawbacks for those seeking a reliable and durable solution for their GMC G2500 transmission issues.

If you are experiencing transmission fluid leakage, noise, or vibration on your 1983-1989 GMC G2500 and are committed to using a high-quality, OEM replacement part, the Timken SX-3857 rear transmission shaft seal is an excellent choice. Ensure you have the necessary tools and knowledge to install the seal or consider having it installed by a professional to ensure proper fitment and function.

Details:

Timken rear transmission output shaft seal for 1983 - 1989 Gmc G2500 manual qz: status: in stock.

specifications differentialsdepo:

• for models: G2500
• for makes: Gmc
• for years: 1983–1989
• brand: Timken
• mpn: Sx-3857
• placement on vehicle: Transmission Gaskets Sealing Systems
• type: Manual Transmission Output Shaft Seal
• item length: 8.000
• manufacturer warranty: 1 Year
• ipn: C748 44-11
• compatible year: 1989 1988 1987 1986 1985 1984 1983
• core charge: Free No Core Charge
• position: Rear
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Timken Manual Transmission Output Shaft Seal

offer differentialsdepo:

• started: february 26, 2026
• sold #: 9
• options: ship-to-home
• in stock #: 5
• prices: $16.92–$63.66
• item condition: New
• availability: in stock

returns differentialsdepo:

• policy: returns accepted
• paid by: seller
• time: 30 days

shipping differentialsdepo:

• type: fixed
• class: standard, expedited
• transit: 2-6 days
• service: standard, expedited

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

seller differentialsdepo:

• # reviews: 626385
• rating: 99.5%
• city: indianapolis, indiana

payments differentialsdepo:

• wallet: apple-pay
• other
• credit card: diners-club