Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity. Iridium tip is six (6) times harder than platinum providing the strongest ignitability and the longest life possible. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in DIS ignition systems. OE engineered for specific vehicle applications. Shorty Spark Plug: No. Resistor: Yes. Manufacturer Heat Range: 7. Electrode Tip Material: Iridium. Electrode Core Material: Copper. Insulator Type: Projected. Spark Plug Thread Size: 12mm. Spark Plug Reach: 26.5mm. Spark Plug Seat Style: Gasket. Wrench Diameter: 5/8 in. Ground Strap Quantity: One Engine V6, Engine Size 3.6L/3597cc Engine Family Volkswagen V6 Trivalent metal plating provides superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage Sold In 6 Pack Brand Name NGK Unit Count 6.0 Count Item Weight 0.72 Pounds Thread Size 12mm Manufacturer NGK Model Number 1961 Core Material Iridium Top Material Type Ceramic, Metal Automotive Fit Type Vehicle Specific Fit Included Components 1961 Manufacturer Part Number DZNGK-25633 Compatible with Vehicle Type Car, Truck Manufacturer Warranty Description Includes manufacturer provided warranty