Autolite® Platinum spark plugs provide a center wire platinum firing tip for improved performance and durability. These plugs fire quicker and cleaner with less voltage, creating easier starts, quicker acceleration and improved fuel economy versus standard plugs. Full platinum firing tip assures virtually no gap erosion and fewer misfires for a longer plug life Manufactured with a center wire platinum firing tip for improved performance and durability Necked-down center electrode fires quicker and cleaner with less voltage for easier starts, quicker acceleration, and improved fuel economy Super conductive yttrium enhanced ground electrode provides superior heat transfer High nickel alloy side electrode resists electrical and chemical wear to maintain a precise gap for a longer lasting plug Leak proof, heat fused resistor for added stability Package Dimensions: 1.000 x 1.000 x 3.375 inches Package Weight: 0.105 lb Package Quantity: 1 UPC: 009100262233 Center Electrode Core Material: Copper Center Electrode Design: Standard Center Electrode Projection: Extra-Long Projection Center Electrode Tip Material: Platinum Electrical Terminal Type: Stud Ground Electrode Core Material: Nickel Ground Electrode Quantity: 1 Ground Electrode Tip Design: Tapered Ground Electrode Tip Material: Nickel Hex Size: 16 MM Hex Size: 5/8 IN Insulator Material: Ceramic Pre-Gap Size: 1.4 MM Pre-Gap Size: 0.054 IN Reach: 0.809 IN Reach: 20.5 MM Resistance: 4000 82 Resistor Type: Yes Seat Type: Tapered Thread Diameter: 14 MM Country of Origin: MX