QU40243 Spindle Seal Or Axle tube Dust Seal Dana 50, Dana 60, Dana Super 70

QU40243 Outer Axle Shaft to Axle Housing or Spindle Seal is a genuine original equipment Seal that presses on your Ford Excursion or 1999-2004 Super Duty inner axle shaft next to the yoke. QU40243 was also used on 1988.5-1997 F-350, 1993-1997 F-250 trucks and 2005-2009 Chevy/GMC C4500, C5500 4x4s as axle shaft to spindle seal. On the inner shaft, It's function is to keep dust and debris from entering the axle housing tubes. For inner axle shaft applications, this is only a Dust Seal. If you see oil leaking past this seal, you need QU40244 Inner Axle Seal. When used on the outer axle shaft, QU40243 is both a dust and outer grease seal. For 1999-2004 Ford Super Duty and 2000-2005 Excursion QU40243 fits both Dana 50 and Dana 60 Front Drive Axles. Made in U.S.A. or Canada. Order 2 Seals per vehicle.

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:
Maximize Seal Life
To Install
Typical Seal Life
Available Tech Publications
Matching Parts 2013-up AAM 925 12 Bolt Front Axle
Matching Parts - Under Construction
Matching Parts - Under Construction 
Matching Parts - Under Construction 
Matching Parts - Under Construction 
Matching Parts - Under Construction 
Matching Parts 2005-2009 Chevy or GMC C4500, C5500 4x4
Applications

Tech Note 1: Maximize Seal Life
To maximize seal life and prevent squeaks, apply a thin, uniform coat of a quality grease to the seal lip.

Tech Note 2: To Install
These seals are a fairly light friction fit on your inner axle shaft. The only special tool you need to install these are your two thumbs to push them on. If you do not install your axle shaft right away, you may find the seal has "popped" off the shaft shoulder. This is normal. Just push it back in place and install the axle shaft. Once installed the seal will stay on the shaft.

Tech Note 3: Typical Seal Life
This type of Outboard Axle Shaft Seal has a fairly short life. Most of them will be worn out within 3 or 4 years. When used a a Spindle to Outer Axle Shaft Seal worn seals should be replaced as soon as possible. For inner axles, QU40243 is just an outer protective seal, a failed one does not pose any real problem, although it is of course better to have them functional.

Tech Note 4: Available Tech Publications
QU40243 is item 22 in the Shaft, Hub, Brake, and Steering Components Full Color Exploded View that is included in these 4x4 Tech Publications: TSB4644, TM4637, and TM4688.

Tech Note 5: Matching Parts for 2013-up AAM 925 12 Bolt Front Axle
With Dynatrac Free-Spin Conversion:
Interactive Exploded View XV1018 2013-up Dodge Ram 2500/3500 AAM 925 CAD Front Axle
QU11173 Greaseable Axle U-Joint
QU40496 Spindle Seal and Thrust Washer
QU40149 Spindle Bearing
QU40119 Wheel Seal
QU50398 Wheel Bearing
QU50396 Wheel Bearing Cup
QU50412 Wheel Bearing
QU50411 Wheel Bearing Cup
QU40038 Spindle Flat Washer
QU40036 6 Slot Spindle Nut
QU40037 Spindle Lock Washer
Dynatrac Free-Spin Hub Kits

Tech Note 6: Matching Parts for 1995-1997 F250 Dana 50IFS Front Axle
Interactive Exploded View XV1010DT 1995, 1996, 1997 Ford F250 Dana 50IFS Axle
Under Construction

Tech Note 7: Matching Parts for 1999-2005 Ford Dana 50 Front Axle
Saved for Future Use

Tech Note 8: Matching Parts for 1988.5-1991 F350 Dana 60 Front Axle
Saved for Future Use

Tech Note 9: Matching Parts for 1992-1994 F350 Dana 60 Front Axle
Saved for Future Use

Tech Note 10: Matching Parts for 1995-1997 F350 Dana 60 Front Axle
Saved for Future Use

Tech Note 11: Matching Parts 2005-2009 Chevy or GMC C4500, C5500 4x4:
QA40372  Spindle Bearing and Seal Kit incls QU40243 Seal, QU40496 Seal/Thrust washer, QU40149 Bearing
QU40538 Dust Seal, Inner Axle Shaft
QU40244 Inner Axle Shaft Oil Seal
QU30468 Wheel Seal
QU52356 Hub Cap O-Ring
TK4783 Wheel Bearing Kit
TK40562 Axle U-Joint
QK4988 Ball Joint Kit 1 Side
QU20088 Spindle Nut
QT1215 Spindle Nut Socket

Applications

Chevy and GMC:
C4500, C5500 4x4 Trucks: 2005, 2006, 2007, 2008, 2009

Dodge Ram:
Dynatrac Free-Spin Conversion on Ram 2500 and Ram 3500 with AAM 925 12 Bolt Front Axle: 2013, 2014, 2015, 2016, 2017, 2018

Ford:
F-350 (partial): 1988.5, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
F-250, F-350, F-450, and F-550 4x4 trucks All: 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004
Excursion 4x4s All: 2000, 2001, 2002, 2003, 2004, 2005