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Advance Adapters Dana 18 Saturn Overdrive
Some information provided by Advance Adapters

This all-range overdrive is a great addition to any of the early model Jeeps from 1940 to 1971, and I.H. Scouts 1961 - 1965 with the Model 18 transfer case. The addition of this 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. 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. Advance Adapters purchased the tooling, engineering data, and inventory from Warn in 1991. The components manufactured today are the same as the old Warn components. They hae incorporated a few upgrades on the units sold today, but these units are still interchangeable with the original Warn overdrive. (Note: the Saturn is not compatible with the Husky unit.)

Benefits of the Saturn Overdrive
Increases Engine & Drivetrain Life
Reduces Engine RPM by 25%
Improves Gas Mileage
No Driveline Modifications
Can be used in Overdrive of Direct
One (1) Year Warranty

Part #


Vehicle Models

915670 26T x 6 Spline M38, M38-A1, CJ2A, CJ3A, some CJ3B, 4-63 4x4, 4-73 4x4
915672 29T x 6 Spline CJ5, CJ5A, CJ6, CJ6A, 4-74 4x4, some CJ3B, 6-266, 6-230
915676 31T x 10 spline Mitsubishi Jeep only

Components breakdown



Jeep Parts and Accessories
OK Auto 4WD & Tire - Jeep Parts and Accessories


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