My Account  |  0 item(s)    View Cart

GM TH350 3 speed, 4wd Automatic Transmission to the Jeep / Scout Dana 18 & 20 Transfer Case (with 10 spline drive gear) Adapter Kit

Your Price: $480.99
Retail Price:$505.04
Your Savings:$24.05(5%)
Part Number:AA-50-3101

Choose Options

Customer Location:
Advance Adapters

The GM TH350 adapter to the Dana 18 is a short 1.850”. And the overall length of transmission and adapter is 23.35”. The adapter material is 356 T-6 heat treated aluminum alloy and the adapter has a provision for a transmission. The adapter kit includes a adapter housing, 10 spline spud shaft, bearing, snap ring, o-ring, seal, gasket, fastening hardware and adapter instruction.

Transfer Case

This adapter assembly will fit any Dana Spicer 18 with a 10 tooth female drive gear. The transfer case index to the new adapter will require an index retainer & sealed bearing. Please I.D. the transfer case bore size (3-1/8”) small hole or (4”) large hole for proper retainer. Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1941-79.

* For use when replacing T14 transmissions.

Drive Gear Provided is 6 Spline Internal by 29 Teeth External


This adapter kit is designed for exclusive use with the 4wd GM TH350 automatic transmission. This GM automatic was commonly found stock in vehicles from 1969-81. The Turbo Hydramatic 350 three speeds automatic is one of the most transmissions available in GM 4x4 trucks. The stock 4wd output shaft protrudes from the back of the case approx 1”. 1980-81 model TH350 4wd output protrudes out 2.750”. And this TH350 also uses a lock-up torque convert, and was always used with an aluminum transfer case. We recommend the 1980-81 model not be used.

Related Items