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The CP piston and ring specified for Acura B18A/B1 applications is a single replacement piston with an 81.0mm bore in standard size and a listed compression ratio of 9.0. Supplied as a single piston and matching ring, it’s intended as a direct replacement where the B18A/B1 engine requires an 81.0mm STD piston to restore proper fit and combustion geometry.
CP Piston & Ring for Acura B18A/B1 - Bore (81.0mm) - Size (STD) - Compression Ratio (9.0) - Single
