Cometic 12+ Subaru FA20 DOHC 89.5mm .042 inch MLX LHS Head Gasket - C4589-042

The Cometic 12+ Subaru FA20 DOHC 89.5mm .042 inch MLX LHS Head Gasket - C4589-042 is a precision-engineered head gasket with a 89.5mm bore and .042" compressed thickness for the Left-Hand Side (LHS).

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: 89.5mm
• Thickness: .042" compressed
• Position: Left-Hand Side (LHS)
• Part Number: C4589-042

Verified fitment: Scion FR S (2013–2016); Subaru BRZ (2013–2020); Toyota 86 (2017–2020).