Mahle MS Piston Set GM 604 351ci 4.008in Bore 3.48in Stk 5.7in Rod 0.927 Pin -5cc 10.5 CR Set of 8

If you're building or rebuilding a GM 604 Crate Engine, Mahle's MS Piston Set is a solid choice for a drop-in forged replacement. This set is designed for 351 cubic inch applications, featuring a 4.008-inch bore and a 3.48-inch stroke, working with a 5.7-inch connecting rod and a 0.927-inch pin. These pistons are crafted from 4032 aluminum, a material known for its strength and durability, making them well-suited for the demands of a performance engine. The -5cc dish volume contributes to a 10.5:1 compression ratio when paired with the right cylinder heads and gasket, offering an improved power curve without sacrificing reliability for street use.

Mahle has engineered these pistons for a press-fit pin, which is a common and secure method for connecting the piston to the connecting rod. Each piston weighs in at approximately 551 grams, contributing to a balanced rotating assembly. This set includes all eight pistons needed for a V8 engine, ensuring you have everything to complete your engine build. Remember that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or Mahle's technical documentation for specific assembly details and compatibility with other engine components.