Speedmaster PCE348.1019 LS MLS Head Gaskets 4.106" Bore 0.040" Thick Pair

The Speedmaster PCE348.1019 multi-layer steel (MLS) head gaskets are engineered for high-performance Chevy GM LS engines, delivering exceptional sealing capability under extreme combustion pressures. This pair of gaskets features a 4.106" bore diameter with 0.040" compressed thickness, designed to maintain consistent contact pressure between the cylinder head and block throughout the demanding dynamics of engine operation.

Key Features:

• Multi-layer steel construction withstands extreme shearing forces between aluminum heads and iron blocks
• Internal embossments expand under heat to create superior sealing at high temperatures and combustion pressures
• Ideal for heavy nitrous oxide and turbocharged applications requiring maximum reliability
• Compatible with aluminum-to-cast iron and aluminum-to-aluminum block combinations
• Superior torque retention and reduced distortion compared to conventional composite gaskets
• 4.106" bore diameter accommodates standard and performance LS builds
• 0.040" compressed thickness for precise compression ratio tuning

Built for high-horsepower LS engines, these MLS gaskets utilize high-pressure steel laminate technology proven to handle big power in racing, forced induction, and nitrous applications. The advanced design ensures reliable sealing where traditional composite gaskets would fail, making them essential for serious performance builds.