Cometic Subaru EJ25 Motor 04-06 SOHC/DOHC 101mm Bore .040in MLX Cylinder Head Gasket - C4578-040

The Cometic Subaru EJ25 Motor 04-06 SOHC/DOHC 101mm Bore .040in MLX Cylinder Head Gasket - C4578-040 is a precision-engineered head gasket with a 101mm bore and .040" compressed thickness.

The Cometic MLX Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring MLX Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers for superior sealing under extreme cylinder pressures and temperatures. Precision CNC-machined to exacting tolerances, this gasket seals combustion, water jackets, and oil passages simultaneously — eliminating the need for multiple gaskets or sealing compounds.

• Material: MLX Multi-Layer Steel (MLS)
• Bore Size: 101mm
• Thickness: .040" compressed
• Part Number: C4578-040

Verified fitment: Subaru Forester (1998); Subaru Impreza (1998); Subaru Legacy (1999).