Details

• Brand:

  

  

• SKU:

  JL1Z-4C180-B

• Other Names:

  Pump Assembly

• Description:

  This is a genuine Ford electronic limited-slip differential pump assembly, catalogued under base number 4C180, fitted to the rear axle of the Expedition and Lincoln Navigator. The electro-hydraulic pump pressurizes the clutch pack inside the electronic limited-slip differential, allowing the control module to vary the torque split between the rear wheels for improved traction on slick surfaces and added stability during cornering and trailer towing. When this pump fails, drivers often see a differential or traction warning light, lose the limited-slip action, hear the pump cycling abnormally, or find the rear axle behaving like an open differential with one wheel spinning freely. Because it is an integral part of the rear drive axle assembly, it is normally serviced as a complete unit rather than rebuilt. This pump carries the later JL1Z-4C180-B designation, which supersedes the earlier release, so it reflects Ford's current production revision for this application. Built to Ford engineering specifications, it matches the original electrical connector, mounting, and hydraulic interface for a direct fit without modification. Fitment covers Expedition and Navigator models equipped with the electronic limited-slip rear differential across the 18-24 production span. Always confirm your axle option and existing part number against the Ford catalog before ordering, and follow the published service procedure, since module relearn or calibration steps may be required after replacement to restore proper differential operation.

• Replaces:

  JL1Z4C180A

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