Dana 18 Transfer Case Parts for Willys CJ3B
Intermediate Shaft, Bearings, Repair Kits & Seals for Your Transfer Case Rebuild (1953–1964).
Why the Dana 18 Transfer Case in the Willys CJ3B Needs Rebuilding After Decades of Service.
The Dana 18 transfer case was fitted to Willys and early Jeep models as far back as 1941 and is regarded as a rugged yet maintenance-intensive post-war design. Decades of off-road and daily use expose the intermediate shaft, bearings, and seals to moisture, vibration, and constant load. Seals harden and become porous, allowing gear oil to escape. The intermediate shaft's needle bearings wear in or corrode from moisture ingress, while yoke nuts and slip yokes work loose or develop play under vibration. The shift mechanism – detent ball, spring, and shift rail seal – wears over time as well. Anyone restoring their vehicle to original specification or bringing it back to daily-driver condition cannot avoid a proper Dana 18 transfer case rebuild.
- Intermediate Shaft & Bearings: The complete intermediate shaft kit including needles and thrust washers, plus individual needle bearing rollers for the intermediate shaft.
- Gaskets & Seals: The output seal and the front output housing gasket keep the transfer case oil-tight.
- Yoke & Hardware: The matching yoke nut and the rear slip yoke for the rear driveshaft.
- Shift Mechanism: The factory-style shift knob and the shift rail detent ball provide precise gear engagement.
- Complete Overhaul Kit: The small parts repair kit covers the full rebuild with all needles, rings, and hardware in one package.
Parts Built with American Know-How.
For your Dana 18 rebuild, we rely primarily on Crown Automotive – decades of American aftermarket tradition. From the intermediate shaft to needle bearings, seals, gaskets, and the shift mechanism, Crown covers nearly the entire range, complemented by the complete small parts repair kit for a full rebuild. Yoke nuts and washers for the driveshaft flanges also come from Dana Spicer – American engineering and, fittingly, the namesake of the transfer case itself. The slip yoke and rear cover gasket are supplied by Omix.
Your Partner for the Willys CJ3B Transfer Case Rebuild.
Whether you need a complete rebuild or a single wear part, we know the quirks of the Dana 18 from hands-on wrenching experience and are happy to advise you on torque specs, installation order, and compatibility with Dana 20 or Dana 300. Most parts ship from stock within a few days.