Details

• Brand:

  

  

• SKU:

  F75Z-4222-AA

• Positions: Rear
• Other Names:

  Side Bearings, Cup

• Description:

  This is the rear differential carrier side bearing race, also called the bearing cup, the hardened outer ring that presses into the axle housing and provides the running surface for the tapered roller bearing that supports the differential carrier. It works as a matched pair with its cone and roller bearing, and it is what sets and holds carrier position, preload and ring-and-pinion backlash once the shims are installed. Ford catalogs this part under Side Bearings, Cup, in the rear position. Verified applications cover the 9.75-inch rear axle in the non-locking configuration, spanning F-150 from 1997 through 2003 plus the 2004 Heritage body, the New Style F-150 from 2004 through 2008, and the Lincoln Mark LT, with the catalog listing running 1997-2007. Confirm axle size and whether the differential is locking or non-locking before ordering, because the 8.8-inch axle and the locking carrier use different components. Buyers typically arrive here after hearing a howl, whine or growl from the rear end that changes with load rather than with braking, a rumble that rises with vehicle speed, clunking on acceleration and deceleration, or after a technician has found metallic debris in the differential fluid and pitted, spalled or bluish-tinted bearing surfaces during teardown. A race is never reused once the bearing has failed, and it should always be replaced together with its cone and roller. Setup work must be done properly: the old race is driven out of the housing, the new race is seated fully square against its shoulder, and carrier preload and backlash are then set with the correct shims and verified with a dial indicator and a gear pattern check. Fresh gear oil to the correct specification is required after any differential teardown.

• Applications: FORD. 1997-02. 2003-06. F150 1997-03, HERITAGE 2004 (NON-LOCKING). F150 NEW STYLE 2004-08, MARK LT (NON LOCKING).

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