ONLY ONE AVAILABLE +++ Keyed Rear Axle Hub for Dana Differential on 1978 to 1981 Harley Davidson gas models D and D4 +++ 1978 to 1982 Harley Davidson electric model DE3 +++ 1982 gas D3 and DX4 +++ 1979 to 1982 Harley Davidson model MGIV electric +++ Also 1977 to 1981 E-Z-GO gas & electric with 10 bolt cover Dana differential.