Social

Saturn & Warn-OD : Saturn & Warn Overdrive for Dana 18 Transfer Cases (#Saturn-OD)

Saturn & Warn-OD : Saturn & Warn Overdrive for Dana 18 Transfer Cases

Please allow 4-6 weeks to ship

This all-range overdrive is a great addition to any of the early model Jeeps from 1940 to 1971, and I.H. Scouts 1961-65 with the Model 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. 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. Both units were available for the early Jeep and Scout vehicles. The units were offered with the 6 and 10 spline internal assembly and the 26 or 29 tooth output gear. Both units were very popular in the mid-1960s, but it wasn't until the introduction of the Dana Spicer Model 20 transfer case in 1972 that production quantities started to recede. The Warn and Husky overdrives were no longer compatible. Both companies stopped production, and the availability of spare parts became very scarce by the mid-1970s.

Advance Adapters purchased the tooling, engineering data, & inventory from Warn Industries in 1991. The components we manufacture today are the same as the old Warn components. We have incorporated a few upgrades on the units we sell today, but these units are all still interchangeable with the original Warn overdrive. (Note: The Saturn is not compatible with the Husky unit.) 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.

 

Current Average Estimated Wait Time for New Orders
2 to 3 Weeks

915670_WEB.jpg

This all-range overdrive is a great addition to any of the early model Jeeps from 1940 to 1971, and I.H. Scouts 1961-65 with the Model 18 transfer case. The addition of this 25% overdrive unit offers you the needed gearing that 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. If you are interested in a lower gear set for your Dana 18 transfer case, but would like to retain your overdrive, we offer a Saturn bowl gear that will work with the gear reduction kits currently on the market. If a low gear set is purchased, we have available a Saturn overdrive less the bowl gear.

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 we manufacture today are the same as the old Warn components. We have incorporated a few upgrades on the units we sell today, but these units are all still interchangeable with the original Warn overdrive. (Note: The Saturn is not compatible with the Husky unit.)

APPLICATION INFORMATION: To select the proper overdrive model, find your vehicle model and transmission type listed below. The Saturn overdrive will only fit the vehicles listed that have a Dana 18 transfer case.

Part # Description Vehicle Models PN915670 26T x 6 spline M38, M38-A1, CJ2A, CJ3A, some CJ3B, 4-63 4X4, 4-73 4X4

PN915672 29T x 6 spline CJ5, CJ5A, CJ6, CJ6A,4-74 4X4, some CJ3B, 6-266, 6-230

PN915674 29T X 10 spline (T14 trans) CJ5, CJ5A, CJ6, CJ6A PN915678 27T X 6 spline PN915676 31T X 10 spline (Mitsubishi Jeep only) PN915677 6 spline overdrive (minus the bowl gear) designed for the Tera Low & Jack O’Brien low gear sets. ($738.71)

SHIFTER APPLICATION: Shifters are sold separately. Part # Description PN920000 T90 Dual Handle T/C  PN920001 T90 Single Handle T/C PN920003 Universal Saturn Shifter PN920013 T14 Shifter

Saturn Overdrive information saturn

Saturn Parts Diagram 

SATURN PARTS LIST:

PART              QTY      DESCRIPTION 

NO.                 REQ. 

PN911043            1            HEX NUT 

PN911067            2            BRASS SYNCHRO-RING 

PN911069            3            SYNCHRO DOG 

PN911071            3            SYNCHRO SPRING 

PN911078            1            SHIFTER SLIDER RING 

PN911090            4            PIN, PLANETARY GEAR 

PN911091            2            NEEDLE BEARING

PN911092            1            26-TOOTH GEAR 

PN911093            1            29-TOOTH GEAR 

PN911094            2            THRUST RACE  

PN911095            1            THRUST WASHER 

PN911096            1            31-TOOTH GEAR  

PN911097            1            27-TOOTH GEAR 

PN911098            1            TERA LOW BOWL GEAR 

PN911099            2            NEEDLE BEARING  

PN911100            2            THRUST WASHER  

PN911103            1            SHIFTER FORK 

PN911105            1            SPRING, SHIFT DETENT 

PN911106            1            SHIFT DETENT BALL

PN911107            1            SHIFT RAIL SEAL NEW STYLE  

PN911108            1            SHIFT RAIL O-RING SEAL 

PN911109            1            SPACER WASHER 

PN911130            1            GASKET CASE 

PN911131            1            GASKET BODY 

PN911133            1            OIL SCOOP 

PN911137            1            O-RING 

PN911143            1            NEEDLE BEARING 

PN911147            2            RETAINER RING SUN GEAR BEARING 

PN911236            1            SPECIAL SNAP RING 

PN911313            1            ROLLER BEARING 

PN911316            4            THRUST WASHER 

PN911326            1            BEARING CAP 

PN911328            1            CASE COVER  

PN911330            1            6 SPLINE SHAFT 

PN911334            1            SPACER WASHER 

PN911336            1            GASKET CAP 

PN911337            1            STATIONARY MEMBER 

PN911338            4            14-TOOTH GEAR  

PN911341            8            THRUST WASHER 

PN911342            8            NEEDLE BEARING STRIP 

PN911346            1            DRIVE MEMBER 

PN911731            1            DRIVE NUT 

PN911731-S        1            SPECIAL METRIC DRIVE NUT 

PN911806            1            LOCKWASHER 

PN911838            1            RETAINER RING 

PN912388            1            ROLL PIN

PN913296            1            SHIFTER SHAFT 

PN913297            1            SHIFTER GUIDE PIN 

PN914231            2            SOCKET HEAD SCREWS 6-32 X 1/4 

PN914232            1            PLANET HUB ONLY-6 SPLINE 

PN914384            1            PLANET HUB ONLY-10 SPLINE (T14) 

PN914384-S        1            PLANET HUB ONLY SPECIAL 10 SPL. 

PN914862            1            CAP SCREW SHIFTER 

PN915132            1            COTTER PIN 

PN915204            1            SATURN CASE 

PN916779            1            SNAP RING/PLAN HUB 

PN919866            1            RETAINING RING PLANET PINS 

PN919869            1            RING OIL SLINGER

 

COMPONENT ASSEMBLY KITS  

PN911349        SEAL AND GASKET KIT 

                    KIT INCLUDES ALL GASKET SEALS & SEAL WASHERS 

 

PN912821        THRUST BEARING KIT 

                    KIT INCLUDES:        (2) 911099, (2) 911094, (2) 911100

 

PN918963        4-PC PLANETARY GEAR SETS 

                    KIT INCLUDES:        (8) 911341, (8) 911342, (4) 911316, (4) 911090, (4) 911338, 

 

PN911362        SPLINED SHAFT KIT 

                    KIT INCLUDES:        (1) 911043, (1) 915132, (1) 911143, (1) 911147, (1) 911330

 

PN911317        SYNCHRO RING SERVICE KIT 

                    KIT INCLUDES:        (2) 911067, (3) 911069, (3) 911071

 

PN911318        SYNCHRO ASSEMBLY KIT 

                    KIT INCLUDES:        (2) 911067, (3) 911069, (3) 911071, (1) 911078, (1) 911346

 

PN911223        26 TOOTH PLANETARY HSG. KIT

                    KIT INCLUDES:        (1) 911092, (2) 911091, (1) 919869

 

PN911224        29 TOOTH PLANETARY HSG. KIT 

                    KIT INCLUDES:        (1) 911093, (2) 911091,(1) 919869

 

PN911837        PLANETARY ASSEMBLY (6 SPL.) 

                    KIT INCLUDES:        (1) 914232, (4) 911090, (1) 911095, (1) 911137, (4) 911316, (4) 911338, (8) 911341, (8) 911342, (1) 911731, (2) 919866, (1) 916779, (1) 911143

 

PN911839 -      PLANETARY ASSY. (T14 10 SPL.)

                    KIT INCLUDES:        (1) 914384, (4) 911090, (1) 911095, (1) 911137, (4) 911316, (4) 911338, (8) 911341, (8) 911342, (1) 911731, (2) 919866, (1) 916779, (1) 911143

 

PN911840 -       PLANETARY ASSY. (METRIC 10 SPL.)

                     KIT INCLUDES:        (1) 914384-S, (4) 911090, (1) 911095, (1) 911137, (4) 911316, (4) 911338, (8) 911341, (8) 911342, (1) 911731, (2) 919866, (1) 916779, (1) 911143

Related Products

Top Review

5/5

by Desert Rat, from Switzerland

A Great Overdrive

I have had the Saturn (Warn) overdrive on four of my Jeep CJ5s over a 30 year period, two of which I still own. I recommend them highly.

Among other things, it makes highway driving far more bearable, cuts down on the noise, and you get a modest increase in highway mileage.

The overdrive is very easy to install, just remove the plate on the back of the transfer case, remove the cotter pin from the end of transmission shaft, pull the drive gear off, thread the planetary unit on, torque it up, get the star lock washer on, then bolt on the rest of the unit. The shifter bolts to the top of the transmission and the linkage is a simple rod. You can modify the bracket and linkage as needed. Probably have to cut the floor.

The quality of the unit was equal to the gears in the transmission, nice brass synchros, very well made. One of my Jeeps (overdrive bolted to a T-18 4-speed) had an occasional gear clash problem when shifting, possibly main shaft end play or lousy bearing or something,

Pity the Spicer 18 transfer case is a dying breed, though the Saturn overdrive compliments it nicely.

616 of 1171 people found the following review helpful.

Did you find this review helpful?    Yes  |  No