Mahle MS Piston Set Duramax 4.055in Bore 3.898in Stk 6.417in Rod 1.358 Pin -40.7cc 16.7 CR Set of 8

If you're rebuilding the top end of your GM 6.6L Duramax engine, a solid set of pistons is crucial for reliable performance. This Mahle MS Piston Set is built for that job, offering a robust solution for your diesel engine project. These pistons are designed to handle the demands of a performance diesel, ensuring your engine runs strong.

Mahle has engineered these pistons with a 4.055-inch bore and a -40.7cc dish volume, contributing to a 16.7:1 compression ratio. This specific compression ratio is a key factor in optimizing power and efficiency for the Duramax engine. The pistons are constructed from cast aluminum, a well-known material for its balance of strength and weight, which is important for reducing reciprocating mass. Each piston weighs in at 864 grams, and they come with a 1.358-inch pin diameter, designed to pair with a 6.417-inch connecting rod for a complete engine assembly.

This set includes eight pistons, providing everything you need for a full engine rebuild. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures to ensure the best results for your Duramax engine.