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The JE Pro Seal head gasket specified for GM LSX engines offers a 4.055-inch bore and a 0.059-inch thickness, provided as the right-hand orientation. Intended as a performance-oriented replacement gasket, it matches the LSX bore size and thickness specifications to maintain sealing integrity where this exact dimension and side-specific fitment are required.
JE Pro Seal GM LSX 4.055in 0.059in Headgasket - Right
