C4 Automatic to Dana 20 Adapter, 66-77 Ford Bronco SKU: 8331

Early Bronco Dana 20 Transfer Case to C4 Automatic Transmission Adapter

This transfer case to transmission adapter is the go-to solution for connecting a C4 automatic transmission to the Dana 20 transfer case in a 1966–77 Ford Bronco. This kit includes a new aluminum adapter housing, a custom C4 output shaft that mirrors the stock Bronco C4 dimensions, and all the necessary hardware to get the job done. This conversion can typically be performed with no driveshaft modifications if you're replacing a manual 3-speed that was originally mated to a V8. It's a clean, compact solution that keeps things simple and factory-fresh.

• Designed for 1966–77 Ford Bronco – Engineered to fit classic Bronco models using a Dana 20 transfer case and C4 automatic transmission.

• No driveshaft mods needed – Swapping from a V8 manual 3-speed? You can reuse your existing driveshafts.

• Includes Bronco-specific output shaft – Built to match factory Bronco specs for a precise, reliable fit.

• Full installation kit – Comes with adapter housing, output shaft, gaskets, seal, o-ring, vent, snap ring, fasteners, and detailed instructions.

• Spud shaft options – Shorten your original 3-speed spud shaft by 5/8", or purchase a new one for quicker install.

Swap your Early Bronco to a C4 automatic - this adapter makes it easy to connect your Dana 20 transfer case with no driveshaft mods required for most V8 setups.