SKU: CAGC4312-040
MPN: C4312-040
The Cometic Gaskets Honda K20A2/K20A3/K20Z1/K24A1 .040in cylinder head gasket is engineered for high-performance Honda K-series and K24 engine builds where OEM gasket reliability falls short under boost or aggressive tuning. Built for the serious enthusiast who demands a gasket that survives sustained elevated cylinder pressures, this product addresses the fundamental weakness in stock Honda gasket design: insufficient sealing integrity under modified engine conditions. Whether you're running a turbo K20 swap, supercharged K24, or naturally aspirated high-compression build, a quality aftermarket head gasket is non-negotiable insurance against head lift, coolant weeping, and catastrophic failure.
Cometic's .040-inch thickness specification provides an optimized compression ratio impact while maintaining the robust sealing properties required for modified engine applications. The gasket's multi-layer steel construction resists deformation under sustained combustion pressures far exceeding factory specifications, and the precise .040in dimension preserves your chosen compression ratio without requiring deck height adjustments. This thickness is deliberately selected for K20A2, K20A3, K20Z1, and K24A1 cylinder head geometry—there is no margin for error when gasket thickness deviates even slightly. The gasket material composition handles thermal cycling typical of turbocharged and high-RPM naturally aspirated engines without creep or permanent set.
This gasket is essential for K-series owners stepping beyond mild tune territory—anyone running custom camshafts, port work, fuel system upgrades, or forced induction should regard this as a mandatory component rather than optional. Installation requires proper head bolt torque procedure (typically 22 ft-lbs in three passes for K-series) and a clean deck surface; skipping the deck resurfacing step compromises even premium gasket performance. Compatibility spans K20A2 (RSX-S engine code K20Z2), K20A3 (2002–2006 RSX), K20Z1 (2006+ Civic Si), and K24A1 (TSX) platforms—verify your specific block and head casting before purchase, as K-series variants require exact gasket specification matching.
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