HomeTransmission > Gaskets and Sealing SystemsTimken 415988 Automatic Transmission Output Shaft Seal
Part #: 415988

Timken 415988 Automatic Transmission Output Shaft Seal

N/A
80 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$28.28Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, GMC, and Hummer, Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD Classic, Silverado 3500 Classic, Sierra 2500 HD Classic, Sierra 3500 Classic, Silverado 3500, Sierra 3500, and H1
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Automatic Transmission Output Shaft Seal for Chevrolet, GMC, and Hummer

The Timken 415988 automatic transmission output shaft seal is designed to provide a precise fit and dependable sealing performance for select Chevrolet, GMC, and Hummer models. This seal helps maintain transmission fluid integrity and prevents leaks in heavy-duty applications.

Key Features of Timken 415988 Output Shaft Seal

  • Compatible with Chevrolet Silverado 2500 HD, 3500, and their Classic variants
  • Fits GMC Sierra 2500 HD, 3500, and Classic models
  • Also designed for Hummer H1 transmission output shaft sealing
  • Durable construction to withstand high temperatures and pressures
  • Ensures effective sealing to prevent transmission fluid leaks

Detailed Product Description

The Timken 415988 automatic transmission output shaft seal is engineered to meet the demanding requirements of heavy-duty trucks and SUVs. Specifically compatible with Chevrolet Silverado 2500 HD and 3500 series, GMC Sierra 2500 HD and 3500 series, including Classic models, as well as the Hummer H1, this seal is critical for maintaining transmission performance. It is designed to fit precisely around the output shaft, providing a tight seal that prevents fluid leakage and contamination. The robust materials used in this seal resist wear and degradation caused by heat and friction, ensuring long service life in harsh operating conditions.

Common Applications and Issues Addressed

  • Prevents transmission fluid leaks from the output shaft area
  • Reduces risk of transmission damage due to fluid loss
  • Helps maintain proper transmission pressure and function
  • Addresses wear-related seal failures in Chevrolet Silverado and GMC Sierra HD models
  • Suitable for restoring sealing integrity in Hummer H1 transmissions

Installation Notes and Tips

  • Ensure the transmission output shaft and surrounding area are clean before installation
  • Inspect the shaft for wear or damage that could affect seal performance
  • Use appropriate tools to avoid damaging the seal during installation
  • Apply a light coating of transmission fluid to the seal lip for easier installation
  • Verify proper seating of the seal to prevent leaks

Quality Assurance and Warranty Information

Timken manufactures the 415988 output shaft seal to meet strict quality standards for durability and fitment. While specific warranty details may vary, Timken products typically come with a limited warranty against defects in materials and workmanship. This seal is designed to provide reliable service when installed according to manufacturer guidelines and used in compatible Chevrolet Silverado, GMC Sierra, and Hummer H1 models.

This part fits 80 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
2018ChevroletSilverado 2500 HDAutomaticN/A
2018ChevroletSilverado 3500 HDAutomaticN/A
2018GMCSierra 2500 HDAutomaticN/A
2018GMCSierra 3500 HDAutomaticN/A
2017ChevroletSilverado 2500 HDAutomaticN/A
2017ChevroletSilverado 3500 HDAutomaticN/A
2017GMCSierra 2500 HDAutomaticN/A
2017GMCSierra 3500 HDAutomaticN/A
2016ChevroletSilverado 2500 HDAutomaticN/A
2016ChevroletSilverado 3500 HDAutomaticN/A
2016GMCSierra 2500 HDAutomaticN/A
2016GMCSierra 3500 HDAutomaticN/A
2015ChevroletSilverado 2500 HDAutomaticN/A
2015ChevroletSilverado 3500 HDAutomaticN/A
2015GMCSierra 2500 HDAutomaticN/A
2015GMCSierra 3500 HDAutomaticN/A
2014ChevroletSilverado 2500 HDAutomaticN/A
2014ChevroletSilverado 3500 HDAutomaticN/A
2014GMCSierra 2500 HDAutomaticN/A
2014GMCSierra 3500 HDAutomaticN/A
2013ChevroletSilverado 2500 HDAutomaticN/A
2013ChevroletSilverado 3500 HDAutomaticN/A
2013GMCSierra 2500 HDAutomaticN/A
2013GMCSierra 3500 HDAutomaticN/A
2012ChevroletSilverado 2500 HDAutomaticN/A
2012ChevroletSilverado 3500 HDAutomaticN/A
2012GMCSierra 2500 HDAutomaticN/A
2012GMCSierra 3500 HDAutomaticN/A
2011ChevroletSilverado 2500 HDAutomaticN/A
2011ChevroletSilverado 3500 HDAutomaticN/A
2011GMCSierra 2500 HDAutomaticN/A
2011GMCSierra 3500 HDAutomaticN/A
2010ChevroletSilverado 2500 HDAutomaticN/A
2010ChevroletSilverado 3500 HDAutomaticN/A
2010GMCSierra 2500 HDAutomaticN/A
2010GMCSierra 3500 HDAutomaticN/A
2009ChevroletSilverado 2500 HDAutomaticN/A
2009ChevroletSilverado 3500 HDAutomaticN/A
2009GMCSierra 2500 HDAutomaticN/A
2009GMCSierra 3500 HDAutomaticN/A
2008ChevroletSilverado 2500 HDAutomaticN/A
2008ChevroletSilverado 3500 HDAutomaticN/A
2008GMCSierra 2500 HDAutomaticN/A
2008GMCSierra 3500 HDAutomaticN/A
2007ChevroletSilverado 2500 HDAutomaticN/A
2007ChevroletSilverado 2500 HD ClassicAutomaticN/A
2007ChevroletSilverado 3500 ClassicAutomaticN/A
2007ChevroletSilverado 3500 HDAutomaticN/A
2007GMCSierra 2500 HDAutomaticN/A
2007GMCSierra 2500 HD ClassicAutomaticN/A
2007GMCSierra 3500 ClassicAutomaticN/A
2007GMCSierra 3500 HDAutomaticN/A
2006ChevroletSilverado 2500 HDN/A
2006ChevroletSilverado 2500 HDAutomaticN/A
2006ChevroletSilverado 3500N/A
2006ChevroletSilverado 3500AutomaticN/A
2006GMCSierra 2500 HDN/A
2006GMCSierra 2500 HDAutomaticN/A
2006GMCSierra 3500N/A
2006GMCSierra 3500AutomaticN/A
2006HummerH1N/A
2005ChevroletSilverado 2500 HDN/A
2005ChevroletSilverado 3500N/A
2005GMCSierra 2500 HDN/A
2005GMCSierra 3500N/A
2004ChevroletSilverado 2500 HDN/A
2004ChevroletSilverado 3500N/A
2004GMCSierra 2500 HDN/A
2004GMCSierra 3500N/A
2003ChevroletSilverado 2500 HDN/A
2003ChevroletSilverado 3500N/A
2003GMCSierra 2500 HDN/A
2003GMCSierra 3500N/A
2002ChevroletSilverado 2500 HDN/A
2002ChevroletSilverado 3500N/A
2002GMCSierra 2500 HDN/A
2002GMCSierra 3500N/A
2001ChevroletSilverado 2500 HDN/A
2001ChevroletSilverado 3500N/A
2001GMCSierra 3500N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.