Cometic Subaru EZ30D mk II .051in MLS Cylinder Head Gasket - 90mm Bore - LHS - C4623-051

The Cometic Subaru EZ30D mk II .051in MLS Cylinder Head Gasket - 90mm Bore - LHS - C4623-051 is a precision-engineered head gasket with a 90mm bore and .051" compressed thickness for the Left-Hand Side (LHS).

The Cometic Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers that conform to surface irregularities and maintain a positive seal. 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: Multi-Layer Steel (MLS)
• Bore Size: 90mm
• Thickness: .051" compressed
• Position: Left-Hand Side (LHS)
• Part Number: C4623-051

Verified fitment: Subaru B9 Tribeca (2006–2007); Subaru Legacy (2008–2009); Subaru Outback (2003–2009).