Cylinder Head Gasket set with Head Bolt Kit 2004–2010 Chevy and GMC 6.6L V8

DNJ Cylinder Head Gasket set with Head Bolt Kit 

Includes: Head Gasket Set x1, Head Bolt Kit x1.

Engine Designation: LBZ, LLY

Buyers Guide: [2004-2010] Chevrolet, GMC, Hummer Express 2500, Express 3500, Express 4500 6.6L 32V V8 6599cc

Part Warranty: 12-month or 12,000-mile warranty, whichever comes first. Warranty must be requested by the original purchaser and is limited to the replacement of the alleged defective part(s) only.

2004–2010 Chevy and GMC 6.6L V8 Duramax Cylinder Head Gasket Set

The Partsology HGB3221 cylinder head gasket set with head bolt kit is designed for 2004–2010 Chevy and GMC vehicles equipped with the legendary 6.6L V8 Duramax diesel engine, a platform known for its durability, towing strength, and long service life. This OEM-quality gasket set fits popular heavy-duty models like the Chevy Silverado 2500/3500 HD and GMC Sierra 2500/3500, as well as commercial workhorses such as the GMC Savana and Chevrolet Express vans, and even the 2006 Hummer H1. Replacing your head gasket set before failure is critical, as a failing gasket can lead to coolant loss, overheating, white exhaust smoke, oil contamination, or a noticeable drop in engine performance. Catching these warning signs early helps prevent costly engine damage and extended downtime. This kit includes new head bolts, which are important because factory bolts are torque-to-yield and should not be reused, ensuring proper clamping force and a reliable seal once installed. Partsology supplies OEM-quality engine parts at amazing prices, giving you confidence in both fitment and long-term performance, with the added benefit of overnight delivery to get your truck or van back on the road fast.