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Mercury E5ZZ-6A666-A Valve Assembly

1984-1989 Mercury E5ZZ6A666A

Customer Questions & Expert Answers (14)
Ford E5ZZ-6A666-A Valve Assembly
  • Part Description
    Valve Assy
  • Base No.
    6A666
  • Manufacturer
    Ford
  • Manufacturer's Notes
    This part is discontinued.
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Mercury
    Base No.6A666
    Manufacturer Part NumberE5ZZ-6A666-A, E5ZZ6A666A
    Part DescriptionValve Assy
    Other NamesPCV Valve
    Item Dimensions3.0 x 1.3 x 1.7 inches
    Item Weight0.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerFord
    SKUE5ZZ-6A666-A
    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
    1984-1986 Mercury Capri4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L3AT C3, 3AT C5, 4AT AOD, 4MT, 5MT
    1984-1989 Mercury Cougar4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L3AT C5, 4AT AOD, 5MT
    1984-1989 Mercury Grand Marquis8 Cyl 5.0L, 8 Cyl 5.8L4AT AOD
    1984-1986 Mercury Marquis4 Cyl 2.3L, 6 Cyl 3.8L3AT C3, 3AT C5
    1986-1989 Mercury Sable4 Cyl 2.5L, 6 Cyl 3.0L, 6 Cyl 3.8L3AT ATX, 4AT AXOD
    1984-1989 Mercury Topaz4 Cyl 2.3L3AT ATX, 4MT, 5MT
    1987-1989 Mercury Tracer4 Cyl 1.6L3AT ATX, 4AT 4EAT, 4AT F4E-III, 4AT IF4E, 4MT, 5MT
  • Customer Questions & Expert Answers

    Q:
    I would like to know is this part gonna fit with my car Posted by FordPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if E5ZZ-6A666-A fits your vehicle.
    Posted by FordPartsGiant Specialist
    Q:
    How to check the PCV Valve on Ford Thunderbird? Posted by Customer
    A:
    To maintain efficient operation of the PCV system, clean the hoses and check the PCV valve at the intervals recommended in the maintenance schedule. For additional information on the PCV system, locate the PCV valve which is located in the valve cover at the right (passenger) rear corner of the engine compartment. Check the valve by first pulling it out of the valve cover. Shake it- if it rattles, reinstall it in the cover. Start the engine and allow it to idle, then disconnect the PCV hose from the air cleaner housing and feel for vacuum at the hose. If vacuum is felt, the PCV valve/system is working properly. If no vacuum is felt, the oil filler cap, hoses or valve cover gasket may be leaking or the PCV valve may be bad. Check for vacuum leaks at the valve, filler cap and all hoses. Pull straight up on the valve to remove it. Check the rubber grommet in the rocker arm cover for cracks and distortion. If it's damaged, replace it. If the valve is clogged, the hose is also probably plugged. Remove the hose between the valve and the intake manifold and clean it with solvent. After cleaning the hose, inspect it for damage, wear and deterioration. Make sure it fits snugly on the fittings. If necessary, install a new PCV valve. Note: The elbow is not part of the PCV valve. A new valve will not include the elbow. The original must be transferred to the new valve. If a new elbow is purchased, it may be necessary to soak it in warm water for up to an hour to slip it onto the new valve. Do not attempt to force the elbow onto the valve or it will break. Install the clean PCV system hose. Make sure that the PCV valve and hose are secure.
    Posted by FordPartsGiant Specialist
    Q:
    What is the purpose and components of the Positive Crankcase Ventilation (PCV) system and PCV Valve on Mercury Cougar? Posted by Customer
    A:
    The Positive Crankcase Ventilation (PCV) system cycles crankcase vapors back through the engine, where they are burned. The valve regulates the amount of ventilating air and blow-by gas to the intake manifold and prevents backfire from traveling into the crankcase. The PCV system consists of a replaceable PCV valve, a crankcase ventilation filter, and connecting hoses. The air source for the crankcase ventilation system is in the air cleaner. Air passes through a hose connected to the air cleaner housing and to the oil filler cap. From the oil filler cap, the air flows into the valve cover and the crankcase, from which it circulates up into another section of the valve cover and finally enters a spring-loaded regulator valve (PCV valve) that controls the amount of flow as operating conditions vary. The vapors are routed to the intake manifold through the crankcase vent hose tube and fittings. This process goes on continuously while the engine is running. Checking procedures for the PCV system components are included, and component replacement involves simply installing a new valve or hose in place of the one removed during the checking procedure.
    Posted by FordPartsGiant Specialist
    Q:
    How to check and replace the PCV Valve on Mercury Capri? Posted by Customer
    A:
    To maintain the efficiency of the PCV system, clean the hoses and check the PCV valve at the intervals recommended in the maintenance schedule. Locate the PCV valve. On four-cylinder EFI engines, the air cleaner assembly must be removed to gain access to the PCV valve. To check the valve, first pull it out of the grommet in the rocker arm cover or manifold, or out of the lower hose. Shake the valve. It should rattle, indicating that it is not clogged with deposits. If the valve does not rattle, replace it with a new one. If it does rattle, reinstall it. Start the engine and allow it to idle, then disconnect the PCV hose. If vacuum is felt, the PCV/valve system is working properly. If no vacuum is felt, the oil filler cap, hoses or rocker arm cover gasket may be leaking or the PCV valve may be bad. Check for vacuum leaks at the valve, filler cap and all hoses. Pull straight up on the valve to remove it. Check the rubber grommet for cracks and distortion. If it's damaged, replace it. If the valve is clogged, the hose is also probably plugged. Remove the hose and clean it with solvent. After cleaning the hose, inspect it for damage, wear and deterioration. Make sure it fits snugly on the fittings. If necessary, install a new PCV valve. The elbow is not part of the PCV valve. A new valve will not include the elbow. The original must be transferred to the new valve. If a new elbow is purchased, it may be necessary to soak it in warm water for up to an hour to slip it onto the new valve. Do not attempt to force the elbow onto the valve or it will break. Install the clean PCV system hose. Make sure the PCV valve and hose are secure.
    Posted by FordPartsGiant Specialist
    Q:
    What is the purpose of the Positive Crankcase Ventilation (PCV) system for the 1989 Ford Thunderbird? Posted by Customer
    A:
    The purpose of the PCV system is to cycle crankcase vapors back through the engine, where they are burned.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What are the main components of the PCV system for the 1984 Lincoln Mark VII? Posted by Customer
    A:
    The main components of the PCV system are the PCV valve, a fresh air filtered inlet, and the vacuum hoses connecting these components with the engine and the EECS system.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What could be the possible causes if no vacuum is felt for the 1988 Lincoln Mark VII? Posted by Customer
    A:
    The oil filler cap, hoses, or valve cover gasket may be leaking, or the PCV valve may be bad. Vacuum leaks at the valve, filler cap, and all hoses should be checked.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What should be ensured after cleaning and installing the PCV system hose for the 1985 Lincoln Continental? Posted by Customer
    A:
    It should be ensured that the PCV valve and hose are secure.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What is the purpose of the Positive Crankcase Ventilation (PCV) system for the 1984 Lincoln Continental? Posted by Customer
    A:
    The purpose of the PCV system is to reduce hydrocarbon emissions by scavenging crankcase vapors and circulating fresh air through the crankcase.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What are the main components of the PCV system for the 1985 Lincoln Town Car? Posted by Customer
    A:
    The main components of the PCV system are the PCV valve, a fresh air filtered inlet, and the vacuum hoses connecting these components with the engine and the EECS system.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    How can the proper functioning of the PCV valve/system be determined from the 1982 Lincoln Town Car? Posted by Customer
    A:
    Start the engine and allow it to idle, then disconnect the PCV hose from the air cleaner housing and feel for vacuum at the hose. If vacuum is felt, the PCV valve/system is working properly.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What should be done if the rubber grommet is damaged for the 2004 Mercury Grand Marquis? Posted by Customer
    A:
    It should be replaced.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What is the purpose of the Positive Crankcase Ventilation (PCV) system for the 2001 Mercury Grand Marquis? Posted by Customer
    A:
    The purpose of the PCV system is to reduce hydrocarbon emissions by scavenging crankcase vapors.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    Is the elbow part of the PCV valve for the 1990 Mercury Cougar? Posted by Customer
    A:
    No, the elbow is not part of the PCV valve.
    Posted by FordPartsGiant Specialist
    See expert answers on similar PCV Valve
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Genuine Ford Part E5ZZ-6A666-A, the Right Choice

To ensure reliability, purchase Ford part # E5ZZ-6A666-A Valve Assembly. It is sometimes referred to as Mercury PCV Valve. In terms of quality and longevity, OEM parts are top-tier. This is because they are made according to Ford's demanding factory specifications and go through strict quality control. This part fits specific Mercury Capri, Cougar, Tracer models.

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