Mahle Rings 4.040in Bore .043in1.5MM3.00MM Plasma Moly Ductile Low Tension Reduced Rad Moly Ring Set

Mahle Piston Ring Set for 4.040in bore engines. Features ductile iron plasma moly rings for improved durability. Top rings are ductile iron with plasma moly coating for improved wear resistance, measuring 0.043 inches thick. Second ring thickness is 1.5mm. Oil ring thickness is 3.00mm. Low tension design helps reduce internal engine friction, maximizing combustion sealing and minimizing frictional losses to increase horsepower and oil control. The sets include reduced radial wall (RRW) top rings and CP-20 oil rings to reduce tension, improve conformability, and maximize power output. Not CARB approved and cannot be shipped to California.