I have used this oil deflector (I don't know why they call it an oil deflector, once installed it is nowhere near oil free.) DANA 30 Jeep Front Axle 1984 CJ7 to replace rusty factory axles over 35 years old. They got on with the job easily, using a long length of intake pipe, a centerpiece hitch that slides securely on the axle with no wobble or looseness that I can feel. I would recommend this dust cover to anyone converting a DANA 30. It fits on the internal axis.