UPDATE: **SOLD** Was $650.
Looks like it includes the shifter.
“Selling a Warren overdrive
Came off a 1947 Willy’s Cj-2 Jeep
Asking $650”
UPDATE: **SOLD** Was $650.
Looks like it includes the shifter.
“Selling a Warren overdrive
Came off a 1947 Willy’s Cj-2 Jeep
Asking $650”
UPDATE: **SOLD** Was $799.
“29 spline Warn Saturn Overdrive – will fit a T-90/Dana 18 transmission/transfer case. Run that vintage Jeep a little faster and run with lower RPM’s. This overdrive was recently re-built by Herm the Overdrive guy. It is fully functional. I had it in my FC 150 but could not get the linkage worked out to my satisfaction. Ended up selling the FC (for other reasons) and now want to find a good home for this overdrive. Comes complete and ready to install with everything you need (including a new “special” retainer clip) DOES NOT INCLUDE SHIFTER OR LINKAGE – but these are easily fabricated. This unit has low mileage and shows hardly any wear.”
UPDATE: **SOLD** Was $350.
Could be a good price.
“Warn overdrive. 29 tooth , 6 spline , rear shift. Will fit early jeep CJ 5. CJ3a CJ3B, CJ2A.
350 firm. Maybe trade for good winch.”
No pics provided.
https://tucson.craigslist.org/pts/d/warn-overdrive-for-jeep/6669404017.html
“Have recently rebuilt Warn Overdrive for Willy’s vehicles, 29 tooth, never used since rebuilt.”
UPDATE: **SOLD**
The seller is parting out a CJ-5. The tranny/tc/Warn OD is a package deal at $600. It is the older 30% OD.
“Hood $75 Set of springs that lifted the jeep 2-3 inches $100 Windshield frame was never paid for so it is for sale again $50. Passenger side fender $125. Transfer case and transmission with Warn overdrive $ 600 as a unit. the overdrive is 29 tooth. Is an older version 30% overdrive. It takes a special 6 prong tool to remove the barrel gear from the transfer case, that is why i am hoping to sell it with the transfer case.”
UPDATE: **SOLD** Was $800.
Appears worth a look.
“This is a T90 transmission, Dana 18 transfer case and Saturn OD from a 1946 CJ2A.
They all shift and turn freely. The only evident issue is that some one beforehand had cut the tops of the original shifters and added these rods. Doesn’t affect the function, just looks dumb.”
All rebuilt.
“I have rebuilt t18 transmission ( spent $1300) with Novak adapter to a cj2a dana 18 ( rebuilt) with warn overdrive ( rebuilt by Olympic 4×4) combo that I need to sell. I had this combo built years ago but never completed the project so it has zero miles. I have paperwork on tranny and overdrive but cannot find transfer case paperwork. Have all shifters and linkage for all. This has been in my shop collecting dust for many years but has been inside the whole time. It is currently attached to a ford 289 (zero mile since built) but I may keep that for my bronco”
https://seattle.craigslist.org/est/pts/d/cj-jeep-rebuilt-t18-dana-18/6408796551.html
UPDATE: **SOLD** Was $650.
Recently rebuilt.
“Have recently rebuilt Warn Overdrive for Willy’s vehicles, 29 tooth, never used since rebuilt.”
UPDATE: **SOLD** Was $800.
This might be worth a look, but the shifters are missing.
“Complete trans and transfer case with Husky overdrive. Husky brand is a copy of the Warn unit and made in Longmont ,Colo. Missing all shift levers. The trans is a t-98 ,4spd.”

UPDATE: Here is a brochure and some directions/schematics for the rare Sierra Dana 20 Overdrive.
In November of 1980, Pickup, Van & 4WD Magazine published this article on overdrives, which includes several I hadn’t heard about. This series of article images comes from Christian Harrison (and thanks to Marty Tilford for spotting it). The scans aren’t perfect, but are mostly readable. You can find a similar article at the Four Wheeler Network.
Particularly interesting to me is the Dana 20-mounted Sierra Overdrive. Willie Worthy of Four Wheeler was involved in the development of it, but noted that a lack of capital doomed it.