This is a NOS (1)piston for a 1957 Dodge Truck 

315 engine. They are Mopar cast pistons 3&5/8" 

standard bore and 1&25/32" comp. height. The 

dish recess measures .177 inches. Please email 

questions, but give me time to respond. Don't 

forget to check out my store. Have a great 

day and HAPPY EBAYING!!!!