Details

• Brand:

  

  

• SKU:

  CU5Z-9664842-B

• Positions: Left Rear, Right Rear, Front Right Upper Rear, Front Upper Rear, Front Rear, Front Right Rear, Front Left Rear
• Other Names:

  Lumbar Support, Support, Seat Back Cushion Spring, Support Spring, Motor, Support Seat Back Lumbar

• Description:

  This is the genuine Ford seat lumbar support, cataloged as Seat Lumbar Support Cushion (base 9664842), the adjustable pressure element mounted inside the seat back frame that pushes forward against the seat back cushion to give the occupant lower-back support. On power-adjustable seats it works with the lumbar motor and support spring to expand and retract the cushion as the occupant dials in firmness. It fits the CU5Z full-size platform, covering F-150, Expedition, and Lincoln Navigator seats, and supersedes CU5Z-9664842-A and CU5Z-9664842-C, so it is the current service level for the earlier releases. Owners look for this part when the lumbar adjustment stops firming up, the seat back feels collapsed or uneven, the support bladder or spring assembly has failed, or the mechanism buzzes and no longer holds pressure. It installs inside the seat back once the trim cover and back panel are removed, clipping into the frame and connecting to the existing adjuster. Being a factory OEM assembly it matches the original mounting points, travel range, and adjuster interface, restoring correct lower-back support without modifying the seat frame. Confirm your seat uses a powered or manual lumbar cushion of this style before ordering.

• Replaces:

  cu5z9664842a, cu5z9664842c

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