Revolution Gear & Axle 94-02 Dodge Ram 2500/3500 Dana 70 Rear Koyo Ring & Pinion Master Install Kit
A 1994-2002 Ram 2500 or 3500 with a Cummins or V10 that has started to whine at highway speed, clunk when the throttle comes on, or leak at the pinion is usually telling you the Dana 70 rear needs bearings. The Revolution Gear and Axle K35-2035 is the Koyo-bearing master install kit for the Dana 70 rear axle, built for exactly that job: a full bearing overhaul, or the hardware side of a regear when new gears go in for bigger tires or towing.
The Dana 70 under these second-generation Rams is a full-floating heavy-duty axle with a ring gear of roughly 10.5 inches. The pinion turns on two large tapered bearings and the carrier rides on two more; shims behind those bearings set pinion depth and carrier position, which is what puts the gear teeth in the right place. When the bearings lose preload, the pinion moves under load, the contact pattern wanders and the gears start to howl and wear. Per Revolution, K35-2035 includes Koyo pinion bearings and carrier bearings, a pinion seal, crush sleeve, pinion shims, carrier shims, ring gear bolts and cover gasket or silicone. Axle seals are not part of this kit, so plan hub seals separately if the hubs are coming apart.
Drain the oil into a clean pan and look for glitter. Grab the yoke and push it up, down, in and out; any free play means the pinion bearings are finished. A hum that tracks road speed but does not change between throttle and coast is more often a hub bearing on a full floater, so check hub adjustment before tearing into the center section. Our Dana 70 rear axle problems and rebuild cost guide walks through those checks and explains the 70, 70HD and 70-U differences.
This kit is listed for the Dana 70 rear in 1994-2002 Dodge Ram 2500 and 3500 trucks. Those years did not all leave the factory with a Dana 70: many 3500s, especially dual-rear-wheel trucks, came with a Dana 80, and some lighter 2500s used other axles. Read the tag on the housing or the build sheet before ordering. Revolution sells separate kits for the Dana 70U (K35-2037) and Dana 70HD (K35-2036), and the 70-U pinion bearings do not cross to this kit; a Dana 70-U overhaul kit is the match for those housings. If you are unsure, send us your year and VIN. Other kits are in our rebuild kits category.
Revolution's published Dana 70 setup numbers are a 0.061 inch starting pinion shim, 22-35 in-lb pinion bearing preload with new bearings, 0.006-0.010 inch backlash, 110 ft-lb on the ring gear bolts and 80 ft-lb on the bearing caps. Treat the shim as a starting point and finalize depth from the painted contact pattern, as covered in our backlash and pinion depth setup guide. The carrier bearings on a 70 are pressed hard and the carrier is a tight fit, so a clamshell carrier and pinion bearing puller and a Dana 30-80 housing spreader save the bearings, the housing and your knuckles. Check the seal surface on the yoke: if it has a groove, the new seal will leak, and a Spicer Dana 70 29-spline companion flange fits many of these trucks. If you are changing ratio, a Yukon Dana 70 3.73 gear set installs with this kit. Refill with 75W-90 or 75W-140 GL-5, add friction modifier for a Powr-Lok or other clutch-type limited slip, and follow the new gear break-in procedure if the gears were replaced.
| Brand | Revolution Gear & Axle |
| Part number | K35-2035 |
| Fits | Revolution Gear & Axle 94-02 Dodge Ram 2500/3500 Dana 70 Rear Koyo Ring & Pinion Master Install Kit |
| Vehicle fitment | Dodge Ram 2500/3500 (1994-2002) |
| Type | Differential Install Kits |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Revolution lists Koyo pinion and carrier bearings, a pinion seal, crush sleeve, pinion shims, carrier shims, ring gear bolts and cover gasket or silicone. Axle seals are not included.
No. Revolution sells K35-2037 for the Dana 70U and K35-2036 for the Dana 70HD. This K35-2035 is for the standard Dana 70 rear. Check the axle tag before ordering.
Only if the axle is a Dana 70. Many 1994-2002 3500s, especially dual-rear-wheel trucks, have a Dana 80, which uses different bearings. Read the housing tag or send us your VIN and we will confirm.
Yes, if the teeth are not pitted or chipped. Mark and measure the original pinion shim, then set preload, backlash and pattern again. Worn gears usually stay as noisy as before, so most people replace the gears if they are already pulling the pinion.
75W-90 or 75W-140 GL-5 gear oil. Add friction modifier if the axle has a Powr-Lok or other clutch-type limited slip. With new gears, change the oil after the break-in miles.
Revolution's chart lists a 0.061 inch starting pinion shim, 22-35 in-lb pinion bearing preload, 0.006-0.010 inch backlash, 110 ft-lb ring gear bolts and 80 ft-lb bearing caps.
