NGK Spark Plug - BPR6ES Features: NGK's wide heat range results from using copper wire in place of the iron cores found in many conventional plugs. Copper dissipates heat quicker, cooling the electrode and insulator tip. Raised pre-ignition rating with high-conduction copper and long nose insulator. Meets the requirements of high-performance engines. Sold individually. Specifications: Heat Range: 6 Thread Size: 14 mm Type: Resistor Units: Each Weight: 0.25 lbs Alternate/OEM Part Numbers: 7131 BPR6ES Part Number: 37-BPR6ES Compatible Vehicles: Arctic Cat: 120 Models: 2008, 2007, 2006 Sno Pro 120: 2011–2009 Z 120: 2001, 2000 Z 120 Sno Pro: 2001 ZR 120: 2005–2002 Kawasaki: ZN1300A Voyager: 1988–1983 Ski-Doo: Mini Z: 2008–1998 Yamaha: SR400: 2018–2015 Details: BPR6ES Traditional Spark Plug: 14mm Thread Size, 19mm (3/4") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Resistor, Solid Terminal Nut, JIS Height, Projected Tip, .028" (0.7mm) Gap, Heat Range 9. Additional Features: Constructed for longer life and optimum performance. 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 interior leakage.