Mahle MS GM Duramax 4.075in 1/16in 2.0mm 3.0mm Drop In Ring

This is a Mahle MS piston ring set designed for GM Duramax diesel engines. When you open the box, you'll find the complete set of rings needed for your 8-cylinder engine, with a bore size of 4.075 inches. These rings are crucial for sealing the combustion chamber, controlling oil consumption, and transferring heat from the piston to the cylinder wall. For a Duramax rebuild, getting the right ring set is a key step in ensuring reliable performance and longevity.

Mahle has built these rings with steel for the top compression ring, which is 1/16 inch thick, and the second compression ring is 2.0mm. The oil control ring is 3.0mm. This specific configuration is a drop-in design, meaning it's intended to fit directly into the piston grooves without requiring additional machining or special installation procedures, simplifying the rebuild process. Mahle is a well-known name in engine components, and this set is made to meet the demands of a diesel engine.

It's important to note that this ring set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper ring gap setting and installation procedures to ensure optimal performance and engine health.