The NGK BUHW-2 surface gap plugs have no side electrode to pre-gap and are nearly immune to pre-ignition (knocking). Surface gap plugs have no heat range listing as the electrode design prevents the firing tip from overheating causing pre-ignition. Use only the spark plug listed in your engine owner’s manual. Using the wrong plug can reduce optimum performance, reduce fuel economy or cause damage to your engine. Spark plugs are easy to change with common spark plug sockets. The NGK pure alumina silicate ceramic insulator provides superior strength, reduces breakage and provides better heat transfer. The Ribbed Suppressor Seal extends resistance and prevents spark “flash over” and misfire plus the triple seal helps prevent leakage.
NGK BUHW-2 surface gap plugs feature a tungsten center electrode and a solid terminal
Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer
NGK Trivalent metal plating also provides superior anti-corrosion in the marine environment and anti-seizing for easier removal
Don’t just clean used spark plugs, replace them with new plugs for better performance