Yukon Gear Dura Grip For Dana 70 w/ 32 Spline / 4.10 and Down Ratio
The Yukon Dura Grip YDGD70-3-32 is a complete clutch-type limited slip carrier for the Dana 70 and Dana 70-U rear axle with 32-spline shafts and a 4.10 or numerically lower ring and pinion. It is the part to look at when an older Ram 2500/3500, Ford or GM one-ton with a Dana 70 has an open carrier that spins the inside tire on a wet boat ramp, or a factory limited slip that has worn out and now behaves like an open diff.
The Dana 70 is a full-floating axle with a 10.5 in. ring gear and a 10-bolt cover, and most were built with 32-spline shafts. In an open carrier, torque always goes to the wheel with the least grip. The Dura Grip adds preloaded clutch packs behind each side gear, so the carrier resists a speed difference between the two axles and sends torque to the tire that can use it. Yukon builds it with a nodular iron case, four preload springs, Raybestos composite clutches and spider and side gears machined from forged 4320 steel. Because it is clutch-based rather than a locker, it still lets the wheels differentiate in a turn, which matters on a heavy truck that tows on pavement. It is also rebuildable, so worn clutches can be replaced later without buying a new case.
With the truck safely on stands and in neutral, turn one rear wheel by hand. If the opposite wheel turns the other way with little resistance, the carrier is open or the clutches are gone. Next check whether you can save the original: a factory Powr-Lok with a good case only needs the Dana 60/70 Powr-Lok clutch set. If the case is worn, the Dura Grip is the full replacement. Our Dana 70 problems and rebuild cost guide covers identification and teardown, and open vs limited slip vs locker explains why a clutch-type unit suits a tow rig.
Fits Dana 70 and Dana 70-U rear axles with 32-spline axle shafts and 4.10 and numerically lower ratios (for example 3.54, 3.73 and 4.10). The Dana 70-U is the version found in many 1994-2002 Ram 2500 and 3500 trucks; Ford and GM also used Dana 70 rears in heavy trucks and vans. It does not fit 35-spline Dana 70 or 70HD axles, the 37-spline Super 70, or gear sets numerically higher than 4.10, which need a different carrier because the deeper-ratio ring gear is thicker and seats on a different carrier flange. Confirm the axle tag, count the splines on a pulled shaft, and check your ratio before ordering, or send us your year and VIN. See the matching Yukon Dana 70 3.73 gear set if you are regearing at the same time.
| Brand | Yukon Gear & Axle |
| Part number | YDGD70-3-32 |
| Fits | Yukon Gear Dura Grip For Dana 70 w/ 32 Spline / 4.10 and Down Ratio |
| 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.
It fits the Dana 70-U used in many of those trucks when the axles are 32 spline and the ratio is 4.10 or lower. Count the axle splines and read the axle tag before ordering, since some heavy-duty axles are 35 spline.
No. This is the 4.10-and-down carrier. Ratios numerically higher than 4.10 use a thicker ring gear and need the 4.56-and-up version of the carrier.
No. Plan on new carrier bearings and races, which come in a Dana 70 master overhaul kit, and reshim the carrier for preload and backlash.
Use conventional GL-5 gear oil with limited slip friction modifier as Yukon specifies for the Dura Grip. Running it without additive usually causes chatter in turns.
No. It is a clutch-type limited slip, so it biases torque to the wheel with traction but still lets the wheels turn at different speeds in corners, which keeps a loaded truck predictable on pavement.
Yes. Yukon designs the Dura Grip to be rebuildable, so worn clutch packs can be replaced without buying a new case.
