Apex ATC3930 Engine Timing Cover Gasket Set

Engine Timing Cover Gasket Set for GM Trucks

The Apex ATC3930 engine timing cover gasket set is built for specific GM truck and van applications that need a reliable seal at the timing cover. It supports clean engine operation by helping contain oil at the front cover area on compatible Chevrolet Silverado 2500 HD, Silverado 3500, Suburban 2500, Avalanche 2500, GMC Sierra 2500 HD, Sierra 3500, Yukon XL 2500, Express 3500, and Savana 3500 models.

• Engine timing cover gasket set for front cover sealing service
• Compatible with 2001-2006 Chevrolet Silverado 2500 HD and Silverado 3500
• Compatible with 2001-2006 GMC Sierra 2500 HD and Sierra 3500
• Compatible with 2001-2006 Chevrolet Suburban 2500 and GMC Yukon XL 2500
• Compatible with 2001-2002 Chevrolet Express 3500 and GMC Savana 3500
• Compatible with 2002-2006 Chevrolet Avalanche 2500 and 2007 Silverado/Sierra Classic HD models
• Part number ATC3930 for application matching and catalog lookup

Use this gasket set when servicing the timing cover on GM V8 truck platforms that require a precise front cover seal. The Apex ATC3930 is a direct-fit sealing solution for 2001-2007 Chevrolet and GMC applications, including 2007 Chevrolet Silverado 2500 HD Classic, 2007 Chevrolet Silverado 3500 Classic, 2007 GMC Sierra 2500 HD Classic, and 2007 GMC Sierra 3500 Classic. The part number ATC3930 is also helpful when cross-checking service records or ordering by reference.

This part cross-references Fel-Pro (e.g., TCS 46000) for the same application.

Common Repair Uses

• Oil seepage at the timing cover
• Front engine oil leaks around the cover seam
• Seal replacement during timing cover service
• Maintenance on high-mileage GM truck engines
• Leak repair after front-end engine disassembly

Installation Notes and Tips

Clean the mating surfaces thoroughly before installation and inspect the timing cover for warpage, corrosion, or damage. Verify engine configuration and model-year fitment before ordering, since ATC3930 is listed for specific Chevrolet and GMC truck, SUV, and van applications only.

Quality Assurance

Apex identifies this as an engine sealing component for listed GM applications. Confirm fitment against the vehicle year, make, and model before installation.