CP Piston Diesel Set Chevy / GMC Duramax 6.6L - Bore (4.055in) - (STD) - CR (16.1) - CH (1.946)

This is a set of CP Pistons diesel pistons for Chevy and GMC trucks equipped with the 6.6L Duramax engine. These pistons are a standard bore size, measuring 4.055 inches, and are designed for a 16.1 compression ratio with a 1.946-inch compression height. If you're rebuilding the top end of your Duramax, these pistons are a solid option for getting your engine back to spec or for a performance build.

CP Pistons are known for their well-built construction. These pistons are forged from strong materials, which helps them withstand the higher pressures and temperatures common in diesel engines. The standard bore size means they're a direct replacement for stock pistons, simplifying the installation process when you're working on an engine that hasn't been bored out. The specific compression ratio and compression height are important figures to match with your cylinder heads and camshaft for optimal engine performance.

When rebuilding a diesel engine, it's crucial to ensure all components are compatible. These pistons are not CARB approved, so they cannot be shipped to California. Always refer to your engine's service manual for detailed installation procedures and specifications.