QU40571 Dana 50IFS Right Differential Output Shaft

QU40571 Dana 50IFS Right Differential Output Shaft is a genuine Dana diff output shaft for all 1983 to 1997 Ford F-250 and 1983-1985 Ford F-350 4x4 trucks equipped with the Dana 50 IFS Twin Traction Beam® Front Axle. QU40571 was first used on later production 1983 Dana 50 Twin Traction Beam front axles and it was used until Dana 50IFS axles were phased out at the end of the 1997 model year.

Out of Production, order QU40571U

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:
U-Joint type
TK40719 Premium Cold-Forged U-Joint
Replace
Slip Yoke
Tooling
To Remove
Matching Parts
Applications

Tech Note 1: U-Joint type
QU40571U takes an external snap ring type universal joint made to Spicer 1350 series dimensional specifications. The u-joint cup diameter is 1-3/16". The overall width is 3-5/8". See TK40719 and QK4874 Universal Joints.

Tech Note 2: TK40719 Premium Cold-Forged U-Joint
When TK40719 Premium Cold-Forged U-Joint is used as an Axle U-Joint, the beefed up axle yokes on 1980-1997 Ford Dana 50IFS front axles can pose installation problems unless the inside of the yoke ears are slightly modified with a file. Once you modify your new or good condition used axle shafts, TK40719 will just barely clear the yokes as you pivot the cross into place. Since TK40719 is the strongest production u-joint I know of, I believe the slight inconvenience of filing the yokes is well worth the effort.

Tech Note 3: Replace
Always replace QU40088 right axle shaft seal anytime the diff output shaft is removed from the diff assembly. Pregrease the seal lip and QU40515 diff output bearing before installing the output shaft in the differential housing with QU90018 or similar NLGI #2 GC-LB water resistant grease.

Tech Note 4: Slip Yoke
When starting the axle shaft splines into your Slip Yoke, verify that the Slip Yoke and Right Axle Shaft are as close to being in phase as possible. (The center line of the yoke holes line up to each other with little or no offset.)

Tech Note 5: Pregrease
Always pregrease QU40515 diff output shaft support roller bearing and QU40088 seal lip before installing the axle shaft in your diff housing with QU90018 or similar NLGI #2 GC-LB water resistant grease.

Tech Note 6: Tooling
More universal joints and axle yokes are wrecked by slam-bang methods of u-joint replacement than by any other cause. For axle and driveshaft U-Joint press tooling, see our U-Joint Tools web page.

Tech Note 7: To Remove
To remove your differential output shaft from the differential, you MUST unbolt and remove the whole differential housing from the left axle beam. Once the diff assembly is out of the vehicle, you can remove QU40226 Snap Ring from the groove in the axle shaft

Tech Note 8: Matching Parts
Matching parts for QU40571U Diff Output Shaft are:
Interactive Exploded View XV1010DT 1995, 1996, 1997 Ford F250 Dana 50IFS Axle
TK40719 and QK4874 Universal Joints
QU40815 Slip Yoke
QU40226 Diff Output Shaft Snap Ring
QU40088 Right Axle Shaft Seal
QU40087 Left Axle Shaft Seal
QU40515 Diff Output Shaft Support Bearing 1983-1997
QU40534 Right Differential Output Bearing and Seal Kit 1983-1997
QU40085 Small Boot Clamp
QU40084 Large Boot Clamp
QU40572 Slip Yoke Boot (1983-1997)
QU40557 Inner Slip Yoke Seal 1983-1997
QU40435 Right Inner Axle Shaft
TKA4774 Right Axle Shaft Assembly
QU20239 Differential Parts Kit ("Spider Gear" Set)
S82194 Ultra Grey RTV Sealant to seal diff housing to left axle beam
QU90018 Pyroplex® Protection ES NLGI #2 GC-LB Water Resistant Synthetic Grease

Applications:
Ford:
F-250 with optional Model 50 4600 pound Front Axle: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
F-350: 1983, 1984, early 1985
F-250 (Most if not all F250's in these years have a Dana 50 Front Axle): 1995, 1996, 1997