Cometic Honda B20A3/B20A5 .027in MLS Cylinder Head Gasket - 81.5mm Bore - C4564-027

The Cometic Honda B20A3/B20A5 .027in MLS Cylinder Head Gasket - 81.5mm Bore - C4564-027 is a precision-engineered head gasket with a 81.5mm bore and .027" compressed thickness.

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: 81.5mm
• Thickness: .027" compressed
• Part Number: C4564-027

Verified fitment: Honda Prelude (1988–1991).