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Make sure this part fits

Ford 3L8Z-6A666-AD PCV Valve

2003-2005 Ford 3L8Z6A666AD

Customer Questions & Expert Answers (2)
3L8Z-6A666-AD Ford PCV Valve Product Photo 1 of 1
3L8Z-6A666-AD Ford PCV Valve Product Photo 1 of 1
3L8Z-6A666-AD Ford PCV Valve Illustration 1 of 1
  • Part Description
    Valve Assembly
  • Base No.
    6A666
  • Manufacturer
    Ford
Make sure this part fits
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  • Specifications
  • Fitment
  • Q&A

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  • Product Specifications

    BrandGenuine Ford
    Base No.6A666
    Manufacturer Part Number3L8Z-6A666-AD, 3L8Z6A666AD
    Part DescriptionPCV Valve; Valve Assembly
    Item Dimensions8.3 x 6.2 x 4.0 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerFord
    SKU3L8Z-6A666-AD
    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
    2005 Ford Escape4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
    2003-2005 Ford Focus4 Cyl 2.3L4AT 4F27E, 4-Speed Automatic Transaxle - 4F27E, 5MT, 5-Speed Manual Transmission - B5/IB5, 5-Speed Manual Transmission - MTX75, 6MT, 6-Speed Manual Transmission, Front-Wheel Drive (Left Hand Drive), Left Hand Drive
    2003 Ford Ranger4 Cyl 2.3L5AT 5R44E, 5AT 5R55E, 5MT
    2005 Mercury Mariner4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)

  • 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 3L8Z-6A666-AD fits your vehicle.
    Posted and answered by Ford Parts Specialist George
    Q:
    How to check and replace the PCV Valve on Ford Ranger? Posted by Irene P.
    A:
    One must regularly clean and check the PCV valve and hoses to keep the PCV system efficient. The valve can be found in different places depending on the model of the engine. It should shake when you take it out and give it a good shake, or just replace it if you do not hear anything. Check if there is any vacuum after detaching the hose. If there is no vacuum it means that one should look for leaks or replace any damaged components. Ensure that the hose is clean and in good condition with necessary fittings. Fit a new valve where necessary and reconnect the hose safely too.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Ford Parts Specialist Clayton / Apr 27, 2026

Genuine Ford Part 3L8Z-6A666-AD, the Right Choice

To ensure reliability, purchase part # 3L8Z-6A666-AD PCV Valve. It is also called PCV Valve. 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 Ford Escape, Focus, Ranger models. It fits Mercury Mariner.

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