This Mahle MS single forged piston for small-block Chevy is listed for a 315 cid combination with a 3.796" bore and 3.480" stroke, 5.700" rod length and a 0.927" piston pin. The piston is a single-item listing in 4032 alloy with a reported mass around 421 g and is matched to a nominal 9.9:1 compression ratio for the specified configuration.
Mahle MS Piston Set SBC 315ci 3.796in Bore 3.480in Stroke 5.700in Rod .927 Pin -1cc 9.9 CR - Single