Saturn Overdrive Kit for Dana 18, 26 Tooth, 1941-1971, Willys and Jeep

This all-range overdrive is a great addition to any of the early model Jeeps from 1941 1971 with the Model Dana 18 transfer case. The addition of this 25% overdrive unit offers you the needed gearing the early Jeeps were lacking. The Saturn overdrive is a fully synchronized unit that can be shifted-on-the-fly in any of the 3 gears, this essentially gives you 6 gears. When installing the unit, only minor modifications are required to the floorboard for the shifter. The Saturn is built to handle up to 300 ft./lbs. of torque, well within the range of a stock V8.

The Saturn is the original unit designed and developed by Warn Industries. Soon after their introduction, another unit emerged in Colorado by the name of Husky or Dual-A-Matic. The Colorado unit was identical in appearance, but in no way was it interchangeable< with the Warn All-Range Overdrive. Both units were available for the early Jeep and Scout vehicles. The units were offered with the 6 spline internal assembly and the 26, 27, and  29 tooth output gear. 

The Saturn overdrive installs directly on the backside of the transfer case through the inspection cover. No cutting or modification of the drivetrain is required. No relays and electrical connections required.

These are special order and take 6-8 weeks to be delivered. Occasionally we have one on the shelf. Fee free to call to check in stock status.

This complete kit includes everything you will need to install this overdrive. If you have the T-86 transmission please contact us.

You must count the teeth on the main bull gear of transmission to ensure you order the correct overdrive unit. Remove the cover plate from the back of the transfer case in order to count the teeth on the main gear on the back of the transmission. Tooth counts are as follows but be sure to double check: 41-46 MB, GPW, CJ-2A: 27 Teeth
46-53 CJ-2A, 3A, M38, Willys Pickup Truck, Willys Station Wagon: 26 Teeth
53-71 CJ-3B, 5, M38A1, Willys Pickup Truck, Willys Station Wagon: 29 Teeth

Installation Instructions and Tips

Fits:

• 1941-1945 MB and GPW
• 1946-1949 CJ-2A
• 1949-1953 CJ-3A
• 1953-1964 CJ-3B
• 1955-1971 CJ-5
• 1950-1952 M38
• 1952-1966 M38A1
• 1947-1953 Willys Pickup Truck
• 1946-1953 Willys Station Wagon