Skip to Main Content Skip to Footer Links
Error occured! Please reload the page and try again
Choose a Store
Open till 
There are vehicles in your garage

Free shipping on all orders.

Enroll in Speed Perks for more savings.


Cart is empty!


Add Something to the cart

includes estimated shipping



Vehicle added

Vehicles

Find parts for the selected vehicle:

View Vehicles
Are you sure you want to delete this vehicle?

    Add a


    Add a


    Motorcraft Original Equipment Copper Core Spark Plug

    Part # SP-431
    Loading ...
    Save $3 per Spark Plug by mail when you buy 4 or more ACDelco Professional Iridium Spark Plugs. See rebates page for details.
    Qty:
    OUT OF STOCK AT YOUR STORE
    • Product Details

      Part No. SP-431

      Warranty Details (2 YR REPLACEMENT IF DEFECTIVE)

      Motorcraft Original Equipment spark plugs are designed, engineered and recommended by Ford Motor Company.

      Product Features:

      • Same part installed when the engine rolled off the assembly line
      • 30,000-mile service interval
      • Copper core electrode and nickel chromium alloy side electrode for excellent heat dissipation and durability.
      • Resistor reduces radio frequency interference (RFI) and electrode erosion
      • Copper-glass seal bonds insulator and terminal post center electrode together to ensure full required voltage at spark gap and a gas-tight seal

    • Specifications
      • Electrode Core Material:Copper Core
        Electrode Tip Material:Inconel
        Ground Strap Quantity:1
        Insulator Type:Standard
        Manufacturer Heat Range:6
        Reach:.468 in
        Resistor:Yes
        Seat Type:Tapered
        Thread Diameter:18 mm
        Tip Configuration:Copper Core
        Type:Copper Core Spark Plug
        Wrench Diameter:13/16 in
    • Read Review
    • Q & A