SKU: GMP12594171
MPN: 12594171
The Chevrolet Performance LS7 Exhaust Manifold Gasket (Part #12594171) is a multi-layer steel D-port gasket engineered for high-performance LS7 engine applications. This OEM-specification component seals the critical interface between the exhaust manifold and cylinder head, preventing exhaust gas leakage and maintaining optimal engine efficiency across the full RPM range.
The multi-layer steel construction provides superior heat resistance and durability compared to standard composite gaskets, particularly critical for the LS7's high-flow exhaust architecture. The D-port configuration matches the exact port shape of LS7 cylinder heads, ensuring a precision seal under extreme combustion pressures and thermal cycling. This gasket tolerates sustained exhaust temperatures and vibration without compression set or failure, protecting against blow-by that would degrade power output and increase emissions.
LS7 owners undertaking manifold service—whether during engine rebuild, performance tuning, or routine maintenance—require OEM or OEM-equivalent gaskets to maintain factory sealing integrity. Aftermarket or worn gaskets lead to exhaust leaks, which reduce scavenging efficiency and complicate tuning. This Chevrolet Performance gasket delivers the exact dimensional and thermal specifications the LS7 platform demands, making it the choice for builders prioritizing reliability over shortcuts.
One gasket per package. Sold individually for single-manifold applications; order quantity two for both sides.
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