ZONFANT LS1/LS6 V8 Head Gasket Pair - MLS Multi-Layer Steel for 4.8L/5.3L/5.7L Engines

ZONFANT Cylinder Multi-Layer Head Gasket is a direct-fit, multi-layer steel replacement gasket engineered for GM LS-series V8 engines (4.8L, 5.3L, 5.7L) to restore reliable sealing between the head and block.

This head gasket pair from ZONFANT is designed as a practical repair option for many Chevrolet, GMC, Cadillac, Pontiac, Buick and Hummer models that use LS1/LS6 family V8s. Each package contains two head gaskets and the part is made to meet OEM form, fit and function so it fits a wide range of popular applications from Camaro and Corvette to Silverado and Escalade. Before installing, verify vehicle year, engine code and replacement part numbers to confirm compatibility.

Which vehicles and part numbers does this ZONFANT gasket fit?

This multi-layer head gasket replaces several OEM references and fits numerous GM models across Cadillac, Chevy, GMC, Pontiac, Buick and Hummer lineups. The listing replaces part number #26192PT and also corresponds to reference numbers like 12589226 and 12498544.

• Chevrolet: Avalanche (1998–2013 variants), Camaro (1998–2002), Colorado (2009–2012), Corvette (2002–2004), Express & Silverado families, Suburban and Tahoe.
• GMC: Canyon (2009–2012), Envoy variants, Savana vans, Sierra and Yukon ranges.
• Also compatible with model years for Cadillac, Pontiac (Firebird, Grand Prix, GTO), Buick (Allure, LaCrosse, Rainier) and Hummer H3/H3T.

What materials and performance characteristics does this gasket provide?

The gasket is constructed as a multi-layer steel (MLS) design that emphasizes heat resistance, durability and a consistent sealing surface under the repeated thermal cycles of V8 engines. It resists corrosion and abrasion while maintaining cylinder sealing to help control combustion gases and coolant flow paths.

• Multi-layer steel construction for stable clamping and longevity.
• High-temperature and corrosion resistance for prolonged service life.
• Designed to match OEM sealing locations and bore dimensions.

How should I confirm fitment and prepare for installation?

Confirm fitment by matching your engine family (LS1/LS6), displacement (4.8L, 5.3L, 5.7L) and vehicle year against the compatibility list. Inspect the cylinder head and block surfaces for flatness and cleanliness; proper installation and torque sequence are essential for gasket life.

• Match replacement numbers and engine code before purchase (#26192PT, 12589226, 12498544 noted).
• Clean mating surfaces, remove old gasket residue, and check for warpage.
• Use manufacturer torque specs and sequence during installation; replace bolts if required.

What does the package include and what support is available after purchase?

The product ships as a two-piece set (two head gaskets) so you have both cylinder head seals needed for most V8 head jobs. ZONFANT provides customer support for fitment questions and post-purchase help if any issues arise.

• Package contents: 2 x ZONFANT head gaskets, ready for installation.
• Customer support: contact ZONFANT for assistance with compatibility or product concerns.
• Recommendation: verify vehicle compatibility and ambient working conditions before ordering.

Who is this for? This ZONFANT multi-layer head gasket is aimed at professional mechanics, experienced DIYers and fleet technicians repairing LS-series V8 engines in GM trucks, SUVs and performance cars. It suits anyone replacing head seals during a head service, rebuild, or addressing sealing failures, provided they confirm engine and part reference compatibility before installation.