This CP piston and ring entry is a single piston for the Acura B18C5 engine, specified for an 81.5mm bore and a 11.5:1 compression ratio. Supplied as an individual piston (single) this part is tailored to B18C5 rebuilds or custom applications where pistons are replaced one at a time, giving installers the exact bore and compression specs for matching engine work.
CP Piston & Ring for Acura B18C5 - Bore (81.5mm) - Compression Ratio (11.5) - SINGLE