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  • About this item
  • 【Reference Number】SP515, SP-515, SP546, SP-546, SP507, PZH14F, PZT2F, SP546X, 132929499451, F1000399477MTR
  • 【Vehicle Fitment】These automotive replacement spark plugs for 2004 2005 2006 2007 2008 Ford F-150 V8 5.4L, 2005 2006 2007 2008 Ford Expedition F250 F350 Super Duty V8 5.4, 2005 2006 2007 2008 Ford Mustang Explorer/Explorer Sport Trac V8 4.6L | Spark plugs for 2005 2006 2007 2008 Lincoln Navigator Mark LT V8 5.4 | 2006-2008 Mercury Mountaineer V8 4.6L. 
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    8x Double Iridium Spark Plugs for Ford F150 Expedition F-250 Lincoln US Stock

      

     

    About this item

    【Reference Number】SP515, SP-515, SP546, SP-546, SP507, PZH14F, PZT2F, SP546X, 132929499451, F1000399477MTR

    【Vehicle Fitment】These automotive replacement spark plugs for 2004 2005 2006 2007 2008 Ford F-150 V8 5.4L, 2005 2006 2007 2008 Ford Expedition F250 F350 Super Duty V8 5.4, 2005 2006 2007 2008 Ford Mustang Explorer/Explorer Sport Trac V8 4.6L | Spark plugs for 2005 2006 2007 2008 Lincoln Navigator Mark LT V8 5.4 | 2006-2008 Mercury Mountaineer V8 4.6L. 

    【Strict Quality Control】The car spark plugs undergo rigorous quality testing to address a range of common ignition system issues, including backfiring, misfiring, stalling, car shaking, engine jerking, poor idling and poor fuel economy etc. By ensuring the stability and reliability of the spark plug coil's high voltage output, our spark plugs provide improved performance throughout your engine's speed range

    The Iridium fine wire center electrode's durability is six times harder than platinum.Iridium alloys extremely high melting point is perfect for today's engines.

    【Package Included】8 Iridium Spark Plugs. 

     

     

    Why choose iridium spark plugs?

    As an important part of the gasoline engine's flameout experience system, spark plugs directly affect the engine's operating efficiency and the vehicle's driving experience. Spark plug materials come in a wide variety of materials. From affordable nickel alloys to platinum and iridium with excellent performance. Although nickel alloy spark plugs are affordable, they have limited high temperature resistance and corrosion resistance, and have a relatively short service life; spark plugs made of precious metals such as platinum and iridium have good conductivity and corrosion resistance, higher ignition efficiency, and durability. Stronger, suitable for car owners who have certain performance requirements, and also standard equipment for high-performance models.The insulator is made of isostatically pressed ceramic, which has high strength thermal resistance and good insulation.

    The spark plugs are iridium spark plugs. During the production process, the factory strives for excellence just to produce better spark plugs.which improves fuel efficiency, promotes engine performance, enhances acceleration and reduces misfires

     

    Professional Installation Guide:For optimal performance and to prevent damage, we recommend using a torque wrench. This ensures a perfect seal and reliable electrical connection.

     

     

    Specifications:

    • Resistance: 5000 ohms
    • Gap Size: 0.045 IN
    • Center Electrode: Iridium
    • Core Material: Nickel​

     

    Fitment:

    For 2004-2008 Ford F-150 V8 5.4L

    For 2005-2008 Ford Expedition V8 5.4L

    For 2005-2008 Ford Mustang V8 4.6L

    For 2006-2008 Ford Explorer V8 4.6L

    For 2007-2008 Explorer Sport Trac V8 4.6L

    For 2005-2008 Ford F-250 Super Duty V8 5.4L

    For 2005-2008 Ford F-250 Super Duty V10 6.8L

    For 2005-2008 Ford F-350 Super Duty V8 5.4L

    For 2005-2008 Ford F-350 Super Duty V10 6.8L

    For 2005-2007 Ford F-450 Super Duty V10 6.8L

    For 1999-2007 Ford F-550 Super Duty V10 6.8L

    For 2006-2008 Ford F53 V10 6.8L

    For 2006-2008 Lincoln Mark LT V8 5.4L

    For 2005-2008 Lincoin Navigator V8 5.4L

    For 2006-2008 Mercury Mountaineer V8 4.6L

     

     

    Package include:

    8PCS SP546 Iridium Spark Plug

     

    2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm)

     

    How does a spark plug work?

     

      Spark plugs function by producing a spark of electricity that ignites the air/fuel mixture within the engine.

     

      The spark plug has a small electrode at its tip connected to the ignition system.

     

      This electrode produces a spark of electricity that jumps across a small gap to the ground electrode when the engine is running.

     

      This spark will ignite the mixture of air and fuel to enable the engine to work smoothly.

     

    What is a spark plug?

     

    A spark plug is an essential part of your ignition, as your gasoline car won't start without it.

     

    Basically, it's an electrical component that can be found in your engine's cylinder head where it receives a high-voltage charge from the connected ignition coil. 

     

    The charge runs through the spark plug to the electrodes where it jumps the gap as a electrical spark causing combustion.

     

     

     

     

     

      


    Item Specifics
    Type Spark Plug
    Interchange Part Number PZT14F SP507 SP-546 PZT14F, PZT2F, SP421, SP507, PZH14F, HT15, SP515 SP-546 SP546
    Interchange Part Number 2 PZT14F, PZT2F, SP421, SP507, PZH14F, HT15, SP515
    Fuel Type Gasoline
    OE/OEM Part Number SP515 PZH14F
    Superseded Part Number PZT14F SP507 SP-546
    Manufacturer Part Number SP-515, PZH14F
    Voltage 12 V
    Modified Item No
    Surface Finish New
    Material Iridium
    Custom Bundle No
    Fitment Type Direct Replacement
    Color As picture shown
    Quantity 8
    Performance Part Yes
    Configuration Standard
    Heat value 5, TR55GP
    Other Part Number PZT14F, SP507
    Fitment 1 For 2005-2007 Lincoln Navigator
    Fitment 2 For 2005-2008 Ford F250 Super Duty Truck V8 5.4L
    Fitment 3 For 2004-2008 Ford F150 Truck V8 5.4L
    Fitment 4 For 2006-2008 Mercury Mountaineer V8 4.6L
    Fitment 5 For 2005-2008 Ford F350 Super Duty Truck V8 5.4L
    Fitment 6 For 2004-2008 Ford F150 Truck V8 4.6L
    Fitment 7 For 2005-2008 Ford Expedition
    Gap 1.1mm (0.044 inches)
    Items Included 8PCS/SET
    Manufacturer Heat Range 1100 °C
    Manufacturer Warranty Lifetime
    Placement on Vehicle Front
    Universal Fitment No
    Engine 5.4L 6.8L
    About after-sales Money back or replacement(Buyer's choice)
    Make For Ford, For Lincoln
    California Prop 65 Warning Yes
    Brand SPARKWHIZ
    Fitment For 2004-2008 Ford F-150 V8 5.4L
    Vehicle Service Type ‎ Truck
    Core Material ‎Iridium
    Automotive Fit Type ‎ Vehicle Specific Fit
    Vintage Part No

    Payment

    We accept Payoneer/Paypal/Google Pay/Visa/Master Card/Amex/Discover for Payment.

    Shipping

    We will ship out the item within 1-3 business days after comfirming the payment, appreciate your patience.

    Returns

    1.We stand behind every buyer.Items can be returned for exchange or refund within 60 days.

    2.Please contact us when you have any confusion of our item, we will solve the trouble for you as soon as possible.

    Contact Us

    1.This is professional Seller.We will reply your message within 24 hours.

    2.Please contact us whenever you have any question about the item. We will deal with it as soon as possible.

    8x Double Iridium Spark Plugs for Ford F150 Expedition F-250 Lincoln US Stock


    We accept Payoneer/Paypal/Google Pay/Visa/Master Card/Amex/Discover for Payment.

    We will ship out the item within 1-3 business days after comfirming the payment, appreciate your patience.

    1.We stand behind every buyer.Items can be returned for exchange or refund within 60 days.

    2.Please contact us when you have any confusion of our item, we will solve the trouble for you as soon as possible.

    1.This is professional Seller.We will reply your message within 24 hours.

    2.Please contact us whenever you have any question about the item. We will deal with it as soon as possible.


    All rights reserved.



    On Feb 18, 2026 at 23:54:31 PST, seller added the following information:

    Datacaciques