Yukon Gear Replacement Yoke For Dana 60 and 70 w/ A 1410 U/Joint Size

If the pinion seal on your Dana 60 or Dana 70 keeps weeping gear oil no matter how many seals you put in, or you just upsized the driveshaft to a 1410 joint for a diesel swap or a big-tire build, the yoke is the part to look at. The Yukon Gear & Axle YY D60-1410-29S is a replacement pinion yoke for the 29-spline Dana 60, Dana 61, Super 60, Dana 70, 70U and 70HD, machined for a 1410 series U-joint with strap retention. It covers a long list of 3/4-ton and 1-ton Ford, Dodge, Ram, Chevrolet and GMC trucks and vans from the 1960s through the 2010s.

What the pinion yoke does in a Dana 60 or Dana 70

The Dana 60 and Dana 70 share the same 29-spline pinion yoke pattern, which is why one part number covers both families. The yoke slides onto the pinion splines and the pinion nut clamps it against the outer pinion bearing, so it is the part that sets the stack the bearing preload depends on. The outside diameter of the yoke hub is the running surface for the pinion seal, and the two ears hold the driveshaft U-joint. On this yoke the joint caps measure 1.188 in. in diameter with a 4.188 in. snap ring span, use an outside snap ring, and are held in with straps. That is the dimension set that separates a 1410 yoke from the 1350 version, which shares the 1.188 in. cap but has a shorter 3.625 in. span.

Symptoms of a worn or wrong yoke

• Gear oil leaking from the pinion seal right after a seal replacement, a sign the seal lip is riding in a groove worn into the old yoke
• A clunk on takeoff or when you shift into drive or reverse, from a yoke that has lost clamp load and is moving on the splines
• Driveline vibration that builds with road speed after a U-joint failure beat up the ears or the cap bores
• A 1410 driveshaft that will not fit because the axle still wears the factory 1350 yoke
• Rust pitting on the seal surface of a truck that sat for years

How to confirm the yoke is the problem

Drop the driveshaft and look straight at the seal surface. A groove you can catch with a fingernail means a new seal alone will not hold. Rock the yoke up and down: any movement points to a loose pinion nut or worn pinion bearings, and those need attention before the new yoke goes on. Check the ear bores for egg-shaped wear and the snap ring grooves for cracks. If the axle also howls, plan the yoke into a full bearing job using the Dana 60/61 rear master overhaul kit or, for a front axle, the Dana 60 front master overhaul kit. Our guides to Dana 60 rear axle problems and Dana 70 rear axle problems walk through the noise diagnosis.

Fitment

Yukon's application chart for this yoke lists Dana 60 rears and 16-spline Dana 60 rears in 1960s-1970s Dodge D/W200 and D/W300 trucks, Ford F-250 and F-350, and Chevrolet and GMC C/K pickups; Dana 60 reverse-rotation fronts in 1978-1999 F-250/F-350 and 1999-2015 Super Duty; Super 60 rears in 2002-2015 F-250/F-350 and F-450/F-550; Dana 60 disconnect fronts in 1994-2002 Ram 2500/3500 and the 1993 Ramcharger; Dana 61 fronts and Dana 70U rears in 1985-1993 Dodge W250/W350 and 1994-2002 Ram 2500/3500; Dana 70HD rears in Chevrolet and GMC 30-series and C3500 trucks, Ford F-350 and E-series vans; and Ford E-250 through E-450 Super Duty vans. Many of these trucks shipped from the factory with a 1350 yoke, so this part is often an upgrade. Two checks before you order: count the pinion splines (29) and decide whether your driveshaft uses straps or a flange. For a flange-style shaft, see the 29-spline Dana 70 companion flange; for a stock-size shaft, the 1350 version of this yoke. Browse all axle hard parts or send us your year and VIN to confirm.

Install notes

• Scribe the driveshaft and yoke before removal so the shaft goes back in phase.
• Measure pinion rotating torque before loosening the nut, and restore the correct preload on reassembly per the service manual. On axles with a crush sleeve, overtightening ruins the preload.
• Pull the old yoke with a puller and a holding bar, never a hammer; see our pinion flange holding tool guide.
• Install a new pinion seal every time and lube the lip with gear oil.
• Use new 1410 straps and bolts, and press the joint with a U-joint press kit.
• Refill with 75W-90 or 75W-140 gear oil as your axle tag specifies, plus friction modifier on limited-slip units.

Comparing joint sizes? Our U-joint series comparison explains how the series stack up.

Does this one yoke really fit both Dana 60 and Dana 70?

Yes. Yukon lists it for Dana 60, 61, Super 60, 70, 70U and 70HD, which share the 29-spline pinion. Always count your pinion splines to be sure.

Can I use it to convert from a 1350 to a 1410 driveshaft?

Yes, that is one of its most common uses. The 1410 yoke has a 4.188 in. span versus 3.625 in. on the 1350, so the driveshaft end must also be 1410 or use a conversion joint.

What U-joint and hardware does it need?

A 1410 series joint with 1.188 in. caps, outside snap rings and strap retention. Use new straps and bolts when installing.

Should I replace the pinion seal too?

Yes. The old seal is worn to the old yoke surface. Install a new seal with the new yoke and check the pinion bearings while you are in there.

Is there a warranty?

Yukon backs its yokes with a one-year warranty against manufacturing defects.