Copper Plus Spark Plug RDZ19H delivers dependable performance and durability, making it an ideal OE-type replacement for your vehicle. Featuring a copper core center electrode, it ensures precise heat control for extended lifespan and consistent wear. The nickel-tipped center and ground electrodes enhance conductivity while resisting fouling, ensuring reliable ignition under various conditions. Built to ISO and SAE Standards, this spark plug offers proven performance and superior corrosion resistance, making it a trustworthy choice for long-term use. Its tapered seat design and integrated resistor further optimize functionality, providing smooth operation and compatibility with a wide range of vehicles. - Product Features: Copper Plus - Dependable Performance and Durability OE type replacement plug Resists fouling Copper core center electrode allows for accurate control of heat range for longer life Superior corrosion resistance Built to ISO and SAE standards for proven performance - Specifications Center Electrode Design: Standard Center Electrode Diameter (Inch): 0.052 in Center Electrode Tip Material: Nickel Core Nose Length: 0.660 in Electrical Terminal Type: Non-Removable Nut Gap Style: J Gap Grade Type: Standard Replacement Ground Electrode Core Material: Nickel Ground Electrode Material: Nickel Copper Alloy Ground Electrode Quantity: 1 Ground Electrode Tip Design: J Gap Ground Electrode Tip Material: Nickel Hex Size: 0.625 in Hex Type: Hex Indexed: No Installed Height (Inch): 1.45 in Insulator Height: 0.03 in Manufacturer Heat Range: 19 Part Description: Spark Plug Pre-Gap Size: 0.025 in Reach: 0.5 in