GM NV4500 4wd to Jeep Dana 20 Transfer Case Adapter Kit

 

The GM NV4500 adapter to the Jeep Dana 20 is 5.875” in length. And the overall length of this transmission and adapter is 18.250”. Adapter material is 356 T6 heat treated aluminum alloy. The adapter has a provision for a transmission mount. The adapter kit includes an adapter housing, 6 spline spud shaft, special large hole bearing retainer, sealed bearing, snap ring, set collar, gasket, seal, nylon lock nut, and adapter instructions.

 

 

Jeep Dana 18/20 transfer cases must have a 6 spline female drive gear. The transfer case bore size must be (4”) large hole. The Dana 18 kit fits large hole transfer cases only. Transfer case shifter linkage will need to be modified in order to fit alongside the large 5 speed transmission case.  Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1974-79.

Some transfer cases require the stock linkage to be modified for clearance on the NV4500 case.