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Mercury FOTZ-12029-A Coil Assembly - Ignition

2002-2010 Mercury Mountaineer FOTZ12029A

Customer Questions & Expert Answers (6)
Ford FOTZ-12029-A Coil Assembly - Ignition
  • Part Description
    Coil Assembly - Ignition
  • Base No.
    12029
  • Manufacturer
    Ford
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Mercury
    Base No.12029
    Manufacturer Part NumberFOTZ-12029-A, FOTZ12029A
    Part DescriptionCoil Assembly - Ignition
    Other NamesCoil, Ignition Coil
    Manufacturer NoteOHV, SOHC
    Item Dimensions8.2 x 4.5 x 4.5 inches
    Item Weight4.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerFord
    SKUFOTZ-12029-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
    2002-2010 Mercury Mountaineer6 Cyl 4.0L SOHC EFI5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
  • Customer Questions & Expert Answers

    Q:
    Is the the correct part for the attached VIN? Posted by FordPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if FOTZ-12029-A fits your vehicle.
    Posted by FordPartsGiant Specialist
    Q:
    How to check and replace the ignition coil pack on Ford Explorer Sport Trac? Posted by Customer
    A:
    Check the ignition coil by first turning off the ignition and disconnecting the electrical connector(s) from the coil. Connect an ohmmeter across the coil positive (+) terminal and each negative (-) terminal to check the primary resistance of the ignition coil. The resistance should be the same for each check. Then, connect an ohmmeter between the secondary terminals of each coil pack. If continuity does not exist, replace the coil. The ignition coil pack(s) contains three separate coils on V6 models and four separate coils on VB models. Each coil is paired with its companion cylinder. Be sure to check resistance across the appropriate secondary terminals for each coil. To replace the ignition coil pack, disconnect the cable from the negative terminal of the battery. Check to see if all the spark plug wires are numbered. If not, clearly label each plug wire with a piece of tape marked to match the numbers listed on the coil terminals. Then disconnect all the spark plug wires by squeezing the locking tabs and twisting while pulling upward. Do not pull on the wires. Disconnect the ignition coil pack electrical connector. Remove the screws that secure the coil pack to the coil mounting bracket. Installation is the reverse of the removal procedure with the following additions: Before installing the spark plug wire connector into the ignition coil, coat the entire interior of the rubber boot with silicone dielectric compound. Insert each spark plug wire into the proper terminal of the ignition coil. Push the wire into the terminal and make sure the boots are fully seated and both locking tabs are engaged properly.To replace the ignition coil and mounting bracket, detach the radio interference capacitor (if equipped) from the coil mounting bracket. On 4.0L pushrod engines, detach the plastic clip that secures the fuel injection wiring harness to the coil mounting bracket. Then remove the bolt holding the air conditioning hose to the intake manifold plenum. Move the air conditioning tube enough to provide working access to the upper coil mounting bracket bolts. Remove the bolts securing the ignition coil mounting bracket to the engine. On 4.0L SOHC engines, the ignition coil mounting bracket is welded to the valve cover, and therefore unnecessary to remove for access to other components. On 5.0L engines, disconnect the hoses and wiring from the EGR vacuum solenoid, then remove the bolts securing the ignition coil mounting bracket to the engine. Installation is the reverse of the removal.
    Posted by FordPartsGiant Specialist
    Q:
    How do you replace the ignition coil pack for the 2001 Ford Explorer? Posted by Customer
    A:
    Disconnect the cable from the negative terminal of the battery. Check to see if all the spark plug wires are numbered. If not, clearly label each plug wire with a piece of tape marked to match the numbers listed on the coil terminals. Then disconnect all the spark plug wires by squeezing the locking tabs and twisting while pulling upward. Disconnect the ignition coil pack electrical connector. Remove the screws that secure the coil pack to the coil mounting bracket. Installation is the reverse of the removal procedure.
    Posted by FordPartsGiant Specialist
    See expert answers on similar Ignition Coil
    Q:
    How do you replace a coil for the 2001 Ford Ranger? Posted by Customer
    A:
    To replace the coil, first disconnect the negative cable from the battery. Then, disconnect the ignition coil electrical connector(s) and spark plug wires. Remove the bolts securing the coil to the mounting bracket. Install the new coil, ensuring that the interior of the rubber boot is coated with Silicone Dielectric Compound. Properly insert the spark plug wires into the terminals. Finally, reinstall the radio ignition interference capacitor if applicable.
    Posted by FordPartsGiant Specialist
    See expert answers on similar Ignition Coil
    Q:
    What is the importance of checking the primary and secondary coil resistance for the 2003 Ford Ranger? Posted by Customer
    A:
    Checking the primary and secondary coil resistance is crucial to ensure the proper functioning of the ignition system.
    Posted by FordPartsGiant Specialist
    See expert answers on similar Ignition Coil
    Q:
    What should be done after drying the ignition coils for the 2010 Ford Mustang? Posted by Customer
    A:
    Each coil should be inspected for any cracks, damage, and carbon tracking.
    Posted by FordPartsGiant Specialist
    See expert answers on similar Ignition Coil
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine Ford Part FOTZ-12029-A, the Right Choice

Your vehicle deserves only genuine OEM Ford parts and accessories. To ensure reliability, purchase Ford part # FOTZ-12029-A Coil Assembly - Ignition with base parts number 12029. It is sometimes referred to as Mercury Ignition Coil. Our Ford parts and accessories are expedited directly from authorized Ford dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM Ford parts are the best for restoring your vehicle to factory condition performance. This part fits specific Mercury Mountaineer models.

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