For budget or stock-style rebuilds, it's hard to beat the value of Sealed Power cast pistons. They are made from high-quality aluminum alloys and feature a carefully controlled casting, heat-treating, and CNC-machining process. And, because they're designed and manufactured to exceed OEM specs, they'll provide improved reliability, performance, and a long service life. (1956-1960) Ford Mercury Products 312 V8 Flat Head 3.800 bore, 5/64, 3/32, 3/16 Rings, .9122 Pin Dia. replace in sets only. Not an exact duplicate.
