Vulcan C/R Head Gasket Subru WRX 100mm x 1.20mm

The Vulcan C/R Head Gasket for Subaru WRX (100mm x 1.20mm) is a critical engine sealing component designed for turbocharged performance applications where factory gaskets fall short. This gasket serves as the primary barrier between the cylinder head and engine block, preventing combustion gas and coolant leakage while maintaining compression integrity under high boost pressure and elevated engine temperatures. Built for modified WRX platforms, this gasket is essential for builders planning serious power increases, internal modifications, or seeking improved reliability after high-mileage service.

The 100mm bore diameter and 1.20mm thickness are precisely engineered to match Subaru EJ-platform specifications while delivering superior clamp load retention under sustained detonation and turbo boost cycles. The C/R designation indicates a composition-reinforced construction, offering enhanced durability compared to OEM gaskets when exposed to tuning, fuel octane variability, and aggressive ignition timing maps. This thickness specification maintains proper head-to-block surface contact pressure, critical for preventing micro-leakage that can lead to coolant loss, white smoke, or oil weeping—common failure modes on stock gaskets in modified engines producing 300+ horsepower.

Mechanics and performance builders choose this gasket for WRX platforms undergoing head work, cam upgrades, or turbo tuning where compression testing and boost levels exceed factory parameters. Installation requires proper head surface prep—honing or re-facing to manufacturer specifications—and correct torque sequencing to ensure even gasket compression across all cylinder firing points. Compatibility is confirmed for Subaru WRX models utilizing the EJ20 or EJ25 architecture; verify your specific model year and displacement before ordering to guarantee proper fitment and seal longevity.