QU20840 Master M275 Diff Bearing, Seal Kit for 2017-current Ford SRW F250, F350

QU20840 Master Rear Axle Differential Bearing and Seal Kit for 2017-current Ford Super Duty F250 and F350 trucks with Dana AdvanTEK M275  Single Rear Wheel Rear Axles. QU20840 is a genuine Dana Spicer axle kit that includes all the latest production upgrades, so the parts you are installing are as good or better than the parts that originally came with your vehicle. Each kit comes with the exact combination of parts you need to get your axle back in shape and on the road. Premium oil seals to keep lube in and dust and grime out. Handy RTV compound to seal the repair. Kit Includes: pinion head (inner pinion) and tail (outer pinion) bearings, differential bearings, ring gear bolts, pinion depth shims, pinion seal, pinion nut, pinion washer, collapsible spacer, gear marking compound, brush, and RTV sealant. The M275 differential bearings are different for left and right sides. Kit includes both domestic and imported parts.

Also see QU20883 Standard Differential Bearing and Seal Kit that DOES NOT include Ring Gear Bolts and Shims

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:
Kit Contents
Matching Parts and Tools
Lubrication
Pinion Preload
Applications

Tech Note 1: Kit Contents
QU20874 Outer Pinon Bearing Set
QU20875 Inner Pinion Bearing Set
QU50398 Left Side Differential Bearing
QU50397 Left Side Differential Bearing Cup
QU20879 Right Side Differential Bearing Set
QU40473 Pinion Seal
QU20826 Pinion Nut
QU20825 Pinion Washer
QU20824 Pinion Thrust Washer
QU20830 Ring Gear Bolts
QU20870 Pinion Depth Shim Kit
Gear Marking Compound
Brush for Gear marking Compound
Gasket Maker

Tech Note 2: Matching Parts and Tools
QU20084 Axle Shaft O-Ring
TK21003 Axle Shaft Bolt
QT1004 Inner Pinion Bearing Installer

Tech Note 3: Lubrication
Lubricate the bearings with clean gear oil before assembly. Lubricate the pinion seal lip and pinion yoke/flange hub with clean grease prior to final assembly to provide initial lubrication.

Tech Note 4: Pinion Preload
A collapsible spacer or crush sleeve is used to set pinion rotating preload. Final assembly of the pinion in the housing is done once depth is established and the final shim is installed under the inner pinion bearing cup. Assemble the pinion, inner pinion bearing (use QT1004 to install), crush sleeve, pinion slinger/thrust washer, pinion seal, pinion yoke or flange, pinion washer and pinion nut in the housing. Use a suitable tool to hold the pinion yoke/flange in place while the pinion nut is tightened. Tighten the pinion nut until the outer pinion bearing contacts the crush sleeve. At this point, the amount of torque to further tighten the pinion nut will greatly increase and you should still be able to feel some some end-play. From here, tighten the pinion nut in SMALL increments until all end-play is gone and the pinion rotating torque with NEW bearings is 20-32 pound-INCH (2.26-3.58 Nm). If you over-tighten the pinion nut so the pinion-only rotating torque exceeds the specification, you MUST replace the crush sleeve and start over. NEVER back off the pinion nut to reduce pinion rotating torque.  The above procedure and specification assumes you are installing new pinion bearings and the differential with ring gear is not yet installed in the axle housing.

Applications:

Ford:
F250, F350 with Dana M275 Rear Axle: 2017, 2018, 2019, 2020, 2021, 2022, 2023