Apex AHB371 Engine Cylinder Head Bolt Set

Engine Cylinder Head Bolt Set for GM V8 Applications

Apex AHB371 is an engine cylinder head bolt set for select GM vehicles with 1997-2004 coverage. It is used on applications including Chevrolet Corvette, Silverado, Tahoe, GMC Sierra, Yukon, Cadillac Escalade, and related models with the listed fitments.

Key Features

• Engine cylinder head bolt set for hardware replacement during cylinder head service
• Fits select 1997-2004 Chevrolet, GMC, Cadillac, Buick, Hummer, Isuzu, and Pontiac applications
• Direct fitment coverage for many 1st design and 1st generation listed vehicles
• Part number AHB371 for catalog lookup and ordering
• Compatible with a wide range of truck, SUV, van, and performance models

Detailed Description

Apex AHB371 is an engine cylinder head bolt set used in cylinder head repair and reassembly on the listed vehicles. Fitment includes 2004 Buick Rainier; 2004 Cadillac CTS, Escalade, Escalade ESV, and Escalade EXT; 2004 Chevrolet Avalanche 1500, Corvette, Express vans, Silverado trucks, Suburban, Tahoe, SSR, and Trailblazer EXT; 2004 GMC Envoy XL, Envoy XUV, Savana vans, Sierra trucks, Yukon, and Yukon XL; plus 2004 Hummer H2, 2004 Isuzu Ascender, and 2004 Pontiac GTO. Earlier coverage includes 1997-2003 Chevrolet Corvette, 1998-2002 Camaro, 1998-2002 Firebird, and multiple 1999-2003 Silverado, Sierra, Suburban, Tahoe, and Yukon applications. Use AHB371 when servicing GM cylinder heads on these specific engines and platforms.

What It Helps Fix

• Damaged or stretched cylinder head bolts found during engine teardown
• Head gasket service that requires bolt replacement during reassembly
• Loss of proper clamping force at the cylinder head
• Fastener wear from repeated heat cycles and engine service
• Repair work on Chevrolet Silverado, GMC Sierra, and Cadillac Escalade engine assemblies

Installation Notes and Tips

Verify engine code, model year, and the exact fitment notes before installation. Follow the factory tightening sequence and torque procedure for the specific engine. Inspect the cylinder head, gasket surface, and threads before assembly, and replace any fasteners that show corrosion, stretching, or thread damage. This part cross-references OE-style applications for the same use case.

Quality Assurance

Apex replacement hardware is cataloged for direct application matching across the listed vehicles. Confirm AHB371 against the vehicle’s engine and build details before purchase.