Multi-ground electrodes improve ignition capabilities and are less sensitive to increased voltage requirements due to gap growth.Designed to specific manufacturer ignition requirements, NGK's multi-ground plugs maintain all the features of their standard plugs, including: Corrugated Ribs to Prevent Flashover Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer Copper core to aid in heat removal Triple seals to prevent leakage MPN: BKR6EQUP Specifications Warranty 1 Year Torque Specs Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft. Brand NGK Heat Range 6 Longevity 40k-50k Miles Resistor Yes Shell Thread Size 14mm Thread Pitch 1.25mm Seat Type Gasket Resistor Value 5K Ohm Reach 19mm (3/4") Hex Size 5/8" (16mm) Terminal Type Solid Overall Height ISO Gap .020" (0.5mm) Center Electrode Material Platinum Type Standard Size 2.5mm Projection Projected Ground Electrode Material Nickel Type Semi-Surface Discharge Quantity 4 Fitment Automotive 2013 Rolls-Royce 2012 Rolls-Royce 2011 Rolls-Royce 2010 Rolls-Royce 2009 Audi Rolls-Royce 2008 Audi BMW Mini Rolls-Royce 2007 Audi BMW Mini Rolls-Royce Volkswagen Volvo 2006 Audi BMW Mini Porsche Rolls-Royce Volkswagen Volvo 2005 Audi BMW Land Rover Mini Morgan Porsche Rolls-Royce Volkswagen Volvo 2004 Audi BMW Cadillac Land Rover Mini Morgan Porsche Rolls-Royce Volkswagen Volvo 2003 Audi BMW Cadillac Land Rover Mini Porsche Volkswagen Volvo 2002 Audi BMW Mini Porsche Rolls-Royce Volkswagen Volvo 2001 Audi BMW Porsche Rolls-Royce Volkswagen Volvo 2000 Audi BMW Rolls-Royce Volkswagen Volvo 1999 Audi Bentley BMW Rolls-Royce Volkswagen Volvo 1998 Audi BMW Volkswagen Volvo 1997 Audi BMW Volvo 1996 BMW Volvo 1995 Volvo