QU40302 Dana 80 Flangeless Hydrodynamic Pinion Seal

QU40302 Dana 80 Flangeless Hydrodynamic Pinion Seal is a genuine original equipment replacement for GM and early to mid-production Dodge and Ford Dana 80 rear axles. QU40302 replaces non-hydronaonic seals on 1998 and earlier production axles plus it is the exact original equipment part for 1998-1999 Dodge Ram 2500, Ram 3500 and 1999-2000 Ford Super Duty® DRW trucks. Inboard face of Seal Shell has factory applied bead of sealant to eliminate leaks between the shell shell and axle housing. USA Made.

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Other Pinion Seals
Interchangeable
Oil Seal Leaks
Matching Parts
Applications

Tech Note 1: Other Pinion Seals
Early and mid production Dana 80 rear axles (1988-2000 Ford and 1994-1999 Dodge) use shallow shell pinion seals that seat against a step in the housing bore when fully installed and have a clearance groove for the pinion yoke slinger. 2001 and Later Ford axles use QU40473 deep shell seal that has a metal flange that limits seal installation depth. 2000 to 2002 Dodge Dana 80 axles use two part pinion seals.

Tech Note 2: Interchangeable
QU40302 fit all 1994-1999 Dodge Model 80 rear axles and 1988-2000 Ford Ford Super Duty® as it is functionally interchangeable with QU40258 Standard Lip Seal.

Tech Note 3: Oil Seal Leaks
Oil seal leaks can be very vexing with rear axle applications. The most common cause is simply the axle vent system is plugged. When this happens, pressure builds up as the axle warms up during operation until the weakest seal fails. The cure is easy, clean the vent hose and/or fittings (usually found on the left axle tube). Another common cause is a seal wears a groove in the pinion yoke. In these cases, replacing the yoke is the way to go.
Installing stainless steel wear sleeves marketed by most major seal manufacturers would seem like a viable alternative, unfortunately, this type of repair rarely lasts long. Why? A wear sleeve increases the diameter of the yoke or spindle by 0.020"-0.040". When a stock seal, engineered for the original yoke or spindle diameter is installed over a wear sleeve, the larger installed diameter of the sleeve causes the seal to run hotter and wear much faster than normal. Result: Rapid seal wear and presto! the oil leak is back.

Tech Note 4: Matching Parts
Matching parts for QU40302 Pinion Seal:
QU40709 U-Joint Strap and Bolt Kit
QU40061 Pinion Nut
QU40250 Pinion Washer
QU40716 Pinion Yoke
QU40095 Outer Pinion Slinger
QU40218 Limited Slip Lubricant

Applications

Chevy and GMC:
All models with Dana 80 Rear Axle: 1992, 1993, 1994, 1995, 1996, 1997, 1998

Dodge:
Ram 2500, Ram 3500 with Dana 80: 1994, 1995, 1996, 1997, 1998, 1999

Ford:
F350, F450 Super Duty with Dana 80 DRW Axle: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000