Rear Main Seal Kit 12633579 12639250 Compatible with 4.8 5.3 5.7 6.0 6.2 635-518

Rear Main Seal Kit compatible with GM vehicles equipped with 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L V8 engines requiring a 12-bolt rear main seal configuration.Includes part numbers 12633579 and 12639250.Designed as a direct replacement for rear main seal assemblies used in the following applications: Silverado 1500 (2000–2011), Silverado 1500 HD (2001–2003, 2007), Silverado 2500 (2000–2004), Silverado 2500 HD (2001–2006), Silverado 3500 (2001–2003, 2007–2011), Avalanche (2002–2011), Camaro (1998–2002), Corvette (1998–2010), Express (2003–2009), Impala (2006), Suburban (2000–2009), Tahoe (2000–2009), Trailblazer and Trailblazer EXT (2004–2008), Envoy and Envoy XL (2003–2006), Savana (2004–2009), Sierra (2000–2008), Yukon and Yukon XL (2001–2009), Rainier (2004), Escalade, Escalade ESV, and Escalade EXT (2002–2009), H2 (2003–2005, 2008), Firebird (2002), G8 (2009), GTO (2006), and 9-7X (2006).Also fits engines with part number 635-518.

• Model Compatibility: Fits engines with displacement ratings of 4.8, 5.3, 5.7, 6.0, and 6.2 liters as specified in the title.
• Part Number Match: Includes rear main seal components designated by part number 635-518 for functional replacement.
• Application Scope: Designed as a replacement rear main seal kit for vehicles using the listed engine displacements.
• Numeric Identifier Reference: Corresponds to the numeric identifiers 12633579 and 12639250 shown in the product title.
• Functional Purpose: Restores rear main sealing function for engines specified by the displacement values provided.