GM LS2 LS3 L92 Cylinder Head Gasket Set MLS 4.080 Bore Gen IV 6.0 6.2 12610046

Premium MLS Sealing for GM Gen IV LS Engines

The Top Street Performance Multi-Layer Steel (MLS) cylinder head gasket set is a direct replacement for factory GM part number 12610046, engineered for GM Gen IV LS-based V8 platforms. Constructed with multiple embossed stainless steel layers and a rubber sealing coating, this gasket set withstands elevated cylinder pressures while helping prevent combustion, coolant, and oil leaks under demanding operating conditions.

Key Specifications

Engine & Vehicle Compatibility

Designed for GM Gen IV LS-based engines requiring a 4.080-inch bore and 0.051-inch compressed thickness head gasket.

• 6.0L / 364 in³: LS2, L76, L77, L96, LY6, LC8
• 6.2L / 376 in³: LS3, L92, L94, L99, L9H

Common Vehicle Applications:

• Chevrolet Corvette (LS-powered models)
• Chevrolet Camaro (LS-powered models)
• Chevrolet Silverado & GMC Sierra LS-based V8 trucks
• Chevrolet Tahoe, Suburban, GMC Yukon, Cadillac Escalade LS-based V8 SUVs
• Pontiac GTO, Pontiac G8, Chevrolet SS (LS-powered cars)

Installation Context & Use Case

This MLS gasket set supports factory replacements, daily driver rebuilds, and high-performance builds including naturally aspirated, nitrous oxide, supercharged, and turbocharged engines. The multi-layer steel construction delivers consistent compression characteristics when installed on properly prepared block and cylinder head surfaces.

Note: Always verify your engine code, bore size, compressed thickness, and factory part number before ordering to ensure correct fitment.

Key Features

• Multi-layer steel (MLS) construction with a rubber sealing coating for dependable combustion and fluid leak resistance under elevated cylinder pressures.
• Direct replacement for factory GM part number 12610046, ensuring precise fitment for Gen III/IV LS-based V8 engines without modification.
• Manufactured to exact specifications: 4.080-inch bore diameter and 0.051-inch compressed thickness for consistent compression characteristics.
• Compatible with GM Gen IV platforms including LS2 (6.0L), LS3 (6.2L), L76, L92, L96, LY6, and LC8 engines.
• Sold as a matched pair, providing both cylinder head gaskets required for a complete V8 engine installation or rebuild.

Frequently Asked Questions

Which engines do these head gaskets fit?
These cylinder head gaskets are designed for GM Gen IV LS-based V8 engines that require a factory replacement for part number 12610046. Compatible applications include the LS2, LS3, L76, L77, L92, L94, L96, L99, L9H, LY6, and LC8 engine variants.

Do these gaskets require a specific bore size?
Yes. These MLS head gaskets are manufactured with a 4.080-inch bore (103.632 mm) and a 0.051-inch compressed thickness. Always verify your engine code, bore size, and required gasket specifications before installation.

Are these sold individually or as a pair?
They are sold as a matched pair for one complete V8 engine. The set includes both left- and right-side cylinder head gaskets to support stock replacement builds and high-horsepower LS engine assemblies.

How does MLS construction compare to composite gaskets?
These gaskets feature multiple embossed stainless steel layers with a rubber sealing coating. The multi-layer steel (MLS) design provides superior resistance to elevated cylinder pressures compared to conventional composite head gaskets, helping prevent combustion, coolant, and oil leaks.

What is included in the package?
The package contains a matched pair of MLS cylinder head gaskets (Top Street Performance GK012). The block and cylinder heads must be properly prepared prior to installation. Always verify your engine specifications before ordering.