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Mercury 3W1Z-4234-KA Rear Axle Shaft Assembly

2003-2005 Mercury Grand Marquis 3W1Z4234KA

Customer Questions & Expert Answers (3)
3W1Z-4234-KA Ford Rear Axle Shaft Assembly Illustration 1 of 1
3W1Z-4234-KA Ford Rear Axle Shaft Assembly Illustration 1 of 1
  • Part Description
    Shaft Assy - Rear Axle
  • Position
    Passenger Side & Driver Side
  • Replaced By
    3W1Z-4234-A
  • Manufacturer
    Ford
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine Mercury
    Manufacturer Part Number3W1Z-4234-KA, 3W1Z4234KA
    Part DescriptionShaft Assy - Rear Axle
    Item Dimensions39.7 x 8.7 x 8.7 inches
    Item Weight22.10 Pounds
    PositionPassenger Side & Driver Side
    ConditionNew
    Fitment TypeDirect Replacement
    Require Quantity2
    ManufacturerFord
    SKU3W1Z-4234-KA
    WarrantyThis genuine Ford part is guaranteed by Ford's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2003-2005 Mercury Grand Marquis8 Cyl 4.6L4AT 4R70W

  • Customer Questions & Expert Answers

    Q:
    I would like to know is this part gonna fit with my car.
    A:
    You can Select Your Vehicle to check if 3W1Z-4234-KA fits your vehicle.
    Posted and answered by Ford Parts Specialist George
    Q:
    What precautions should be taken while removing the Axle Shafts during the rear axle disassembly process for the 2005 Ford Crown Victoria? Posted by Andre D.
    A:
    Rotate the differential case 180-degrees and slide the pinion shaft out until the stepped part of the shaft contacts the ring gear. Push the outer (flanged) end of the axleshaft in and remove the C-lock from the inner end of the shaft, taking care not to damage the O-rings in the axleshaft grooves during C-clip removal. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Ford Parts Specialist Don / May 24, 2025
    Q:
    How do you complete the installation by reconnecting various components to the rear axle assembly and the Axle Shaft for the 2005 Mercury Grand Marquis? Posted by Janes K.
    A:
    Connect the lower ends of the shock absorbers, the driveshaft to the differential companion flange, and the Brake Dust Shield or torque plates to the axle housing. Reconnect the brake sensor wires, brake lines, and parking brake cables to their clips. Ensure all connections are secure and properly aligned, and torque the fasteners to the manufacturer's specifications. Finally, double-check the routing of the brake lines and cables to prevent any interference with moving parts during operation. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Ford Parts Specialist Patrick / Aug 21, 2022

Genuine Ford Part 3W1Z-4234-KA, the Right Choice

To ensure reliability, purchase part # 3W1Z-4234-KA Rear Axle Shaft Assembly. It is also called Axle Shaft. OEM parts are of high quality and known for their longevity. This is because they are built to the Ford standards which are relatively high and undergo rigorous quality control testing. This part fits specific Mercury Grand Marquis models.

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