Mile Marker Transfer Case Conversion Kit for GMC K35 K3500 K35/K3500 Pickup 501
1973-1974 GMC K35/K3500 Pickup 1977-1978 GMC K35 1979 GMC K3500. PART NUMBER: 501. For owners of 4 wheel drive vehicles, here is a selection of products that allow for a variety of conversions. Count on these kits to reduce wear and tear on your drive train as well as saving at the gas pump.