Mahle OE GMC Pass & Trk 350 5.7L Eng 1967-85 .020 Piston Set (Set of 8)

Mahle is one of the biggest OE piston makers in the world, and they bring that experience to their OE replacement parts. This set of eight cast pistons is made for GMC and Chevrolet 350 cubic inch (5.7L) engines from 1967 through 1985. They are manufactured to a .020 inch undersize, meaning they are slightly smaller than the standard bore size to account for wear or previous machining on the cylinder walls.

These pistons feature compensated ring grooves, which help ensure the piston rings are loaded correctly for good oil control. They also have expansion-controlled designs. This means they are built to maintain small, consistent clearances within the cylinder bore, even as temperatures change. This helps reduce engine noise, wear, and emissions, while also improving oil control. For your convenience, these pistons come ready for installation with the piston pin and clips already mounted.