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Make sure this part fits

Mercury 6W1Z-8B658-AC Fan Relay

2007-2011 Mercury Grand Marquis 6W1Z8B658AC

Customer Questions & Expert Answers (5)
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  • Part Description
    Relay Module
  • Base No.
    8B658
  • Replaces
    6W1Z-8B658-AB
  • Manufacturer
    Ford
Make sure this part fits
$170.60 MSRP: $276.36
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  • Specifications
  • Fitment
  • Q&A

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine Mercury
    Base No.8B658
    Manufacturer Part Number6W1Z-8B658-AC, 6W1Z8B658AC
    Part DescriptionFan Relay; Relay Module
    Item Dimensions8.7 x 7.8 x 7.6 inches
    Item Weight0.90 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces6W1Z-8B658-AB
    ManufacturerFord
    SKU6W1Z-8B658-AC
    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
    2007-2011 Mercury Grand Marquis8 Cyl 4.6L Romeo SOHC EFI4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)

  • Customer Questions & Expert Answers

    Q:
    Can you tell me if this part is correct for my car?
    A:
    You can Select Your Vehicle to check if 6W1Z-8B658-AC fits your vehicle.
    Posted and answered by Ford Parts Specialist Rick
    Q:
    What should you do if you can't determine the correct Relay hookup from the wiring diagrams for the 2008 Mercury Grand Marquis? Posted by Maajed H.
    A:
    If you're not able to determine the correct hookup from the wiring diagrams, you may be able to determine the test hookups from the information provided. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Ford Parts Specialist Patrick / Jan 20, 2022
    Q:
    How do Relays function in the 2008 Ford Crown Victoria? Posted by Vahe N.
    A:
    Relays use a low-current circuit (the control circuit) to open and close a high-current circuit (the power circuit). You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Ford Parts Specialist Sonny / Feb 17, 2025
    Q:
    Is it applicable to fit my car ? 2006 Ford Crown Victoria? If not, could you let me know what the part no I can buy? Posted by Flora P. / 2001 Ford Mustang
    A:
    I SHOW THIS TO FIT THE CROWN VIC
    Answered by Ford Parts Specialist John / Mar 25, 2025
    Q:
    What components does this relay work for? Posted by Deborah D.
    A:
    This relay will work for the cooling fan module
    Answered by Ford Parts Specialist Tim / Feb 24, 2021

Genuine Ford Part 6W1Z-8B658-AC, the Right Choice

To ensure reliability, purchase part # 6W1Z-8B658-AC Fan Relay. It is also called Relay. 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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