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 orders over $25.

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


    Denso Spark Plug Iridium Power

    Loading ...
    Warranty Information
    Get up to a $3 Advance Gift Card per plug with qualifying purchase of Autolite spark plugs. See rebates page for details.
    • Product Details

      Part No. 5310

      Warranty Details (1 YR REPLACEMENT IF DEFECTIVE)

      Increased performance with World's smallest Iridium Center Electrode (0.4mm).

      Product Features:

      • No-compromise, top of the line race spark plug for the most serious enthusiast.
      • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
      • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
      • Wide range of part numbers for thousands of applications, including classic and collector cars
      • Lasts twice as long as most conventional plugs
      • Withstands temperatures greater than 4000° Fahrenheit

    • Specifications
      • Electrode Core Material:Copper
        Electrode Tip Material:0.4mm Iridium
        Ground Strap Quantity:1
        Insulator Type:Purified Alumina
        Manufacturer Heat Range:22
        Material:0.4mm Iridium
        Reach:3/4 in
        Resistor:Yes
        Seat Type:Gasket
        Thread Diameter:14 mm
        Tip Configuration:0.4mm Iridium
        Type:Iridium Power
        Wrench Diameter:5/8 in
    • Read Review
    • Q & A