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Autolite® Platinum spark plugs are engineered with a platinum center electrode firing tip that provides improved performance and increased durability, making it a reliable choice for all older engine applications and designs. Its platinum design delivers quicker firing, smoother starts, for better acceleration, and improved fuel efficiency.


Center Electrode DesignStandard
Center Electrode Tip Material (Inch)Platinum
Ground Electrode Tip DesignNot Tapered
Ground Electrode Tip MaterialNickel
Hex Size (Inch)5/8
Thread Diameter (Millimeter)14
Reach (Inch)0.679
Seat TypeTapered
Pre-Gap Size (Inch)0.05
Manufacturer Heat Range10
Resistance (Ohm)4000
Center Electrode ProjectionMid Projection
Terminal TypeNon Removable Nut