Apex ATC3290 Engine Timing Cover Gasket Set

Engine Timing Cover Gasket Set for GM 4.2L Applications

The Apex ATC3290 engine timing cover gasket set is built for vehicles that need a precise seal at the front of the engine. It is a direct-fit sealing solution for select 2002-2005 GM and Isuzu applications, including Chevrolet Trailblazer, GMC Envoy, and related models.

• Engine timing cover gasket set for front engine sealing service
• Fits 2005 Saab 9-7x, 1st Design
• Fits 2004 Buick Rainier, 1st Des.
• Fits 2004 Chevrolet Trailblazer and Trailblazer EXT, 1st Design
• Fits 2004 GMC Envoy, Envoy XL, and Envoy XUV, 1st Design
• Fits 2004 Isuzu Ascender, 1st Design
• Fits 2004 Oldsmobile Bravada, 1st Design
• Fits 2002-2003 Chevrolet Trailblazer and Trailblazer EXT
• Fits 2002-2003 GMC Envoy and Envoy XL
• Fits 2003 Isuzu Ascender
• Fits 2002-2003 Oldsmobile Bravada

Use Apex ATC3290 when servicing the timing cover on select Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and related platforms. This gasket set is intended to restore the seal between the timing cover and engine block, helping address oil seepage at the front cover area and supporting proper engine sealing during timing cover removal and reassembly. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Front engine oil leaks around the timing cover
• Seepage after timing cover removal service
• Seal replacement during timing component maintenance
• Oil residue buildup near the front of the engine
• Reassembly after timing cover inspection or repair

Installation Notes and Tips

Clean all gasket mating surfaces thoroughly before installation and remove old sealant, oil, and debris. Verify the engine design and model year carefully, since this listing includes 1st Design applications for several 2004 vehicles and specific 2002-2005 fitments. Confirm the vehicle matches the exact year, make, and model shown for Apex ATC3290 before beginning service.

Quality Assurance

Apex ATC3290 is cataloged as an engine sealing component for the listed applications and should be matched to the vehicle’s exact fitment details for proper service.