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Make sure this part fits

Lincoln 3L3Z-6A664-AA PCV Valve

2005-2006 Lincoln 3L3Z6A664AA

Customer Questions & Expert Answers (4)
3L3Z-6A664-AA Ford PCV Valve Product Photo 1 of 2
3L3Z-6A664-AA Ford PCV Valve Product Photo 1 of 2
3L3Z-6A664-AA Ford PCV Valve Product Photo 2 of 2
3L3Z-6A664-AA Ford PCV Valve Illustration 1 of 1
  • Part Description
    Hose - Vent
  • Base No.
    6A664
  • Manufacturer
    Ford
Make sure this part fits
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  • Specifications
  • Fitment
  • Q&A

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  • Product Specifications

    BrandGenuine Lincoln
    Base No.6A664
    Manufacturer Part Number3L3Z-6A664-AA, 3L3Z6A664AA
    Part DescriptionPCV Valve; Hose - Vent
    Item Dimensions2.8 x 4.1 x 13.1 inches
    Item Weight0.80 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerFord
    SKU3L3Z-6A664-AA
    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
    2006 Lincoln Mark LT8 Cyl 5.4L4-Speed Automatic Transmission 4R75E Livonia, 4-Speed Automatic Transmission AODEW/4R70E W/TSS, 4-Speed Automatic Transmission AODEW/4R75E W/TSS, 5-Speed Manual Transmission - Mazda M5R2-C, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
    2005-2006 Lincoln Navigator8 Cyl 5.4L4-Speed Automatic Transmission E4OD(4R100), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission ZF 6HP26 Steptronic, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left 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 3L3Z-6A664-AA fits your vehicle.
    Posted and answered by Ford Parts Specialist George
    Q:
    What is the role of the PCV Hose in the PCV system, and how should it be inspected for the 2005 Ford Expedition? Posted by Verified Customer
    A:
    The PCV system hose carries crankcase blow-by gas to the intake manifold to reduce emissions. It should be examined for damage, cracks, leaks, and obstructions, which should be cleared if found. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Ford Parts Specialist Don / Apr 09, 2026
    Q:
    What brake lines should be inspected and how should brake fluid leaks be addressed for the 2005 Lincoln Navigator, and should the PCV Hose be checked as well? Posted by Lev K.
    A:
    Metal brake lines at entry points to the master cylinder and brake proportioning unit should be inspected for cracks and loose fittings. Brake fluid leaks should be addressed promptly with a comprehensive brake system inspection. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Ford Parts Specialist Patrick / Jul 08, 2024
    Q:
    I understand you have to remove the existing valve cover on the driver's side to install this new PCV valve part. Most of this new part is located under the existing valve cover: hence removal of the cover is required. Can I buy this new PCV valve seperately or do I have to buy a new valve cover and gasket along with it? Posted by Vincent D. / 2005 Ford Expedition
    A:
    PCV VALVE is only serviced in the valve cover, entire valve cover will have to be replaced. 3l3z6a664aa is just the line going to the pcv. Partnumber of this valve is 9L1Z 6582-C DRIVERS SIDE COVER
    Answered by Ford Parts Specialist Matthew / Jul 14, 2017

Genuine Ford Part 3L3Z-6A664-AA, the Right Choice

To ensure reliability, purchase part # 3L3Z-6A664-AA PCV Valve. It is also called Crankcase Breather Hose, PCV Hose, PCV Valve Hose. 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 Lincoln Mark LT, Navigator models.

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