4.160 MLS Head Gasket .051 - GM LS1

The 4.160 MLS Head Gasket .051 - GM LS1 from Cometic Gaskets is a precision cylinder head gasket designed for LS-series engine builders and performance enthusiasts. It provides reliable combustion sealing, making it ideal for applications that demand high performance and durability. Whether you're building a street engine or a high-performance setup, this gasket meets the rigorous requirements of GM's LS platform.

Constructed from multi-layer steel (MLS), this gasket features precisely machined steel layers with elastomer facing, ensuring superior gasket compression and recovery compared to traditional composite designs. The 4.160-inch bore diameter aligns with stock LS1 specifications, while the 0.051-inch compression thickness is optimized for maintaining proper chamber volume and combustion dynamics. MLS gaskets excel in sealing under thermal cycling and pressure spikes, making them suitable for turbocharged, supercharged, or nitrous-equipped builds.

This gasket is particularly beneficial for those looking to enhance the performance of their LS engines, as it prevents blow-by and coolant seepage that can compromise long-term reliability. Proper installation requires adherence to head bolt torque specifications, and Cometic recommends following GM's factory specifications or your engine builder's protocol for optimal sealing. This gasket is sold individually, providing flexibility for various engine builds.