Description Autolite Double Platinum Spark Plugs have better materials to give your engine better performance. Platinum-to-platinum design greatly decreases gap erosion, reduces misfires, and provides improved durability compared to standard plugs. It's the superior-performing spark plug, providing preferred technology for DIS engines. 5-year limited warranty Features details MAXIMUM PERFORMANCE: Every Double Platinum spark plug is necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration. Full copper core electrode provides better performance in all conditions IMPROVED DURABILITY: Our spark plugs are platinum-to-platinum firing for superior durability and super conductive Yttrium enhanced ground electrode provides superior heat transfer CONSTRUCTION: These spark plugs are platinum enhanced high nickel alloy side electrode maintains precision gap and assures virtually no gap erosion for longer plug life high nickel alloy side electrode maintains precise gap AUTOLITE ADVANTAGE: Autolite has been producing spark plugs since 1936 making it one of the most trusted and reliable brands for your OE replacement spark plugs needs Product information Manufacturer ?FRAM Brand ?Autolite Model ?APP3923-4PK Item Weight ?7.4 ounces Package Dimensions ?4.17 x 3.58 x 1.06 inches Country of Origin ?Mexico Item model number ?APP3923-4PK