HomeProductCumminsGenuine Parts4BT/6BTUSA Genuine 6BT5.9 3938177 Piston Ring SetUSA Genuine 6BT5.9 3938177 Piston Ring Set Consult No , Get a Personalized Quote! Description Description USA Genuine 6BT5.9 3938177 Piston Ring Set 3932520 3937392 3937393 Kit Construction Machinery Diesel Engine Parts for Cummins Related products Genuine QSX15 Engine Assembly 80328969 Excavator Diesel Engine For Cummins OIL PRESSURE SENSOR 4984792 Cummins B3.3 speed Revolution sensor