Cometic C15749-063 DST Head Gasket 0.063 4.100 Bore for GM LS 4-Bolt V8

Regular price: $263.95
Regular price: ~~$313.95~~
Sale price: $263.95

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Product Specification:

SKU:CGSC15749-063

MPN: C15749-063

UPC: 191070590680

Weight: 1.2 lb

Type: Head Gaskets

Vehicle Fitment

GM LS Series V8 Engines (Gen III / Gen IV platforms)
LS 4-bolt cylinder head configurations
LS swap applications requiring 4.100" bore MLS sealing
Performance crate LS engines and boosted LS builds

Fitment Notes

Designed specifically for GM LS 4-bolt head configurations
Not compatible with LS 6-bolt, Chrysler HEMI, Ford Coyote, or BMW/Toyota engines
Requires properly machined deck surfaces for MLS sealing performance
Intended for high-performance naturally aspirated and forced induction LS applications

Features

DST (Dual Stopper Technology) for improved combustion sealing under high boost
7-layer multi-layer steel construction for extreme durability
0.063" compressed thickness for compression ratio tuning flexibility
4.100" bore size optimized for small-bore LS applications
Stopper layer design improves clamp load distribution across cylinders
Viton-coated outer layers resist heat, oil, and coolant exposure
Reduces bore distortion under extreme cylinder pressure
Direct bolt-on MLS design for LS 4-bolt heads

Specifications

Material: Multi-Layer Steel (DST / MLX 7-layer construction)
Compressed Thickness: 0.063 inch
Bore Size: 4.100 inch
Orientation: LS 4-bolt cylinder head configuration
Engine Compatibility: GM LS Series V8 platforms
Position: Cylinder head gasket

Included Components

1x DST Head Gasket (LS 4-bolt application)

Product Description

The Cometic C15749-063 DST Head Gasket is engineered for GM LS-series 4-bolt V8 engines requiring a 4.100-inch bore sealing solution. It uses Cometic's Dual Stopper Technology (DST) to improve combustion sealing under high cylinder pressure, making it well-suited for turbocharged, supercharged, and high-compression LS builds.

Its 7-layer multi-layer steel construction and 0.063-inch compressed thickness allow precise compression ratio tuning while maintaining strong durability under heat and load. The integrated stopper design distributes clamping force evenly across the combustion seal area, reducing bore distortion and improving long-term reliability in performance environments.

This gasket is intended for properly machined LS engine platforms and provides a direct-fit MLS sealing upgrade over standard gaskets. It is widely used in both street performance and motorsport LS applications where consistent sealing under boost is critical.