QU40435U Used Ford Dana 50IFS Right Inner Axle Shaft

QU40435U Used Ford Dana 50IFS Right Inner Axle Shaft is a used part for all 1980 to 1997 Ford F-250 and 1983-1985 Ford F-350 4x4 trucks equipped with the Dana-Spicer Model 50 Independent Front Suspension (IFS) Twin Traction Beam Front Axle. The splined end of this shaft fits into the right slip yoke. Available while supplies last.

Also See QU40435 New

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Dan the Gear Man® Tech Notes:
U-Joint Type
TK40719 Premium Cold-Forged U-Joint
Dimensions
Slip Yoke
Install
Clean
Operation Failures
Matching Parts
Applications

Tech Note 1: U-Joint Type
QU40435U 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: Dimensions
QU40435U is approximately 23-15/16" long from center of u-joint hole to end. The splined end is about 1-3/8" in diameter with 31 splines.

Tech Note 4: Slip Yoke
If you are replacing your old axle shaft due to spline wear, you also need to replace the matching slip yoke. Installing a new shaft into an old yoke with worn splines is only a short term repair which will quickly fail.

Tech Note 5: Installing
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 centerline of the yoke holes line up to each other with little or no offset.)

Tech Note 6: Clean
Always Clean the Slip Yoke splines replace both Boot Clamps (1982.5-1996) or the pressed on slip yoke seal (1980-1982.5) before installing your new axle shaft

Tech Note 7: Operation Failures
Right Dana 44IFS Inner axle shaft operating failures are usually a result of either a broken axle u-joint or inadequate lubrication of the slip yoke splines. Good preventative maintenance can usually prevent those type of failures. A good number of axle shafts are also wrecked by poor service procedures during u-joint replacement. Over the years I have seen a lot of axle shafts with bent or broken yokes caused by the slam-bang u-joint removal and installation methods. A C-Frame Press with the correct adapters is both the safest and best way to remove or install axle u-joints

Tech Note 8: Matching Parts
TK40719 and QK4874 Universal Joints
QU20079 Outer Axle Shaft
QU40815 Slip Yoke 1983-1997
QU40618 Slip Joint Seal with Grease Fitting 1980-1982
QU40572 Slip Joint Boot 1983-1997
QU40084 Slip Joint Boot Clamp for Large End (Slip Yoke) 1983-1997
QU40085 Slip Joint Boot Clamp for Small End (Axle Shaft) 1983-1997
QU40557 Inner Slip Yoke Seal 1983-1997
QU40226 Snap Ring, Right Diff Output Shaft 1983-1997
QU40088 Right Axle Shaft Seal 1983-1997
QU40515 Diff Output Shaft Support Bearing 1983-1997
QU40571U Used Differential Output Shaft 1983-1997
QU40173 Right Differential Output Bearing and Seal Kit 1980-1983.5
QU40534 Right Differential Output Bearing and Seal Kit 1983.5-1997
TKA4774 Right Axle Shaft Assembly (includes inner and outer shafts plus u-joint)
QU95036 Spindle to Steering Knuckle Lock Nut
QU20239 Differential Parts Kit ("Spider Gear" Set)
QU90018 Pyroplex® Protection ES NLGI #2 GC-LB Water Resistant Synthetic Grease

Applications:
Ford:
1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 F-250 with optional Model 50 4600 pound Front Axle
1980, 1981, 1982, 1983, 1984, early 1985 F-350
1995, 1996, 1997 F-250 (Most if not all F250's in these years have a Dana 50 Front Axle)