NGK Copper Core Spark Plug - BP8HS (2630) Specifications: Reach: 12.7 mm (1/2") Terminal Type: M4 Thread Diameter: 14 mm Seal Type: Gasket Seat Electrode Material: Standard Nickel Projection Type: Projected Pack Size: 1 Single Unit Resistor: No Tip Configuration: Single Electrode Hex Spanner Size: 20.8 mm (13/16") Part Number: BP8HS Details: NGK 2630 BP8HS Nickel Spark Plug: Designed for Yamaha DT80MXS (1986–1987). Constructed for longer life and optimum performance. Features: 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. Plug Specifications: Thread Size: 14 mm Hex Size: 13/16" (20.6 mm) Reach: 12.7 mm (1/2") Seat Type: Gasket Gap: .028" (0.7 mm) Heat Range: 8 Terminal Type: Removable Nut Resistor: No Overall Height: JIS
