Yukon Gear Dura Grip Positraction for Dana 80 / 35 Spline / 4.10 & Up
A one-ton dually that spins one inside rear tire on a wet boat ramp, a Cummins Ram 3500 that chatters around every parking-lot turn, or an F-350 whose original Trac-Lok has worn down to an open differential: those are the trucks this carrier is for. The Yukon Gear & Axle Dura Grip, part number YDGD80-4-35, is a clutch-type positraction for the Dana 80 full-floating rear axle with 35-spline axle shafts, and it is the series built for ring and pinion ratios of 4.10 and numerically higher.
The Dana 80 is a rear-only, full-floating axle with an 11.25 in. ring gear, so the carrier spends its life handling towing torque. An open carrier sends that torque to whichever rear wheel has the least grip. The Dura Grip puts composite clutch packs behind the side gears; spring preload and gear separating force load those clutches so both shafts are tied together and torque goes to the tire that still has traction. In a turn the clutches slip and the outside wheels run faster, so the truck drives normally on pavement.
Yukon builds the unit with a nodular iron case, forged 4320 chromoly spider gears and a four-pinion layout, the same pinion count as the factory Dana 80 Trac-Lok. It is ABS compatible and fully rebuildable when the clutches eventually wear.
Put the truck on stands with both rear wheels off the ground and the transmission in neutral. Turn one wheel by hand: if the other turns the opposite way with no resistance, the limited slip is effectively gone. Pull the cover and look at the clutch stack and spider gears for wear. Our Dana 80 rear axle problems and rebuild cost guide walks through the noises, bearing failures and Trac-Lok wear that bring most of these axles apart.
This carrier fits Dana 80 rear axles with 35-spline shafts and a 4.10 or numerically higher ratio. The Dana 80 was used in 1994-2002 Dodge Ram 3500 trucks, select Ram 2500s, Ford F-350 dually and F-450 chassis, and GM C3500 HD trucks, but individual axles vary by build, so identify yours by the 10-bolt cover and the 80 cast into the housing. Most factory Dana 80s left the plant in 3.54 or 4.10; a 3.54 or 3.73 axle needs the Dura Grip 3.73 and down instead. If you are regearing at the same time, order this carrier for the ratio you are installing, not the one you are removing. The carrier break guide explains why. Unsure? Send us the axle tag or your year and VIN and we will confirm it.
| Brand | Yukon Gear & Axle |
| Part number | YDGD80-4-35 |
| Fits | Yukon Gear Dura Grip Positraction for Dana 80 / 35 Spline / 4.10 & Up |
| Type | Differentials |
| 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.
If the rear axle is a Dana 80 with 35-spline shafts and the tag shows 4.10, yes. That is the most common Ram 3500 combination. Confirm the 10-bolt cover and the 80 casting before you order.
No. A 3.54 or 3.73 Dana 80 sits on the other side of the carrier break and needs the YDGD80-3-35 Dura Grip. The only way this 4.10-and-up unit fits is if you are regearing to 4.10 or deeper at the same time.
No. This is the 35-spline version. Dana 80s with 37-spline shafts need a carrier machined for 37 splines.
Yukon recommends high-grade non-synthetic GL-5 gear oil with two bottles of its limited slip additive. Synthetic oil is not recommended with the composite clutches because it can make engagement aggressive or noisy.
Yes. Yukon lists this Dura Grip as ABS compatible, so it can go into trucks with factory rear ABS sensors.
The carrier does not include bearings. Reusing old carrier bearings is a gamble on a towing axle, so most installs use a new carrier bearing kit or a full Dana 80 master overhaul kit.
