Mahle Rings Cummins 4BT3.9/6BT5.9 Diesel Engine 17.3:1C/R Chrome Ring Set

If you're rebuilding the engine in your Cummins 4BT3.9 or 6BT5.9 diesel, getting the piston rings right is a critical step. These Mahle OE piston rings are designed to fit your specific engine, ensuring proper sealing between the piston and cylinder wall. This is essential for maintaining compression, controlling oil consumption, and getting the most out of your diesel power. This set is 0.040 inches undersize, which is important if your cylinders have been bored out to match.

Mahle is a well-known name in engine components, and these rings are built to meet the demands of a diesel engine. The chrome plating on the top ring helps to improve durability and wear resistance, especially important in the high-stress environment of a diesel combustion chamber. Proper ring installation is key to their performance; make sure to follow the manufacturer's instructions for seating them correctly in the cylinder bore.