Bougie NGK ITR4A15

The ITR4A-15 spark plugs come pre-gapped as specified by your engine manufacturer. 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 better heat transfer. The ribbed suppressor seal extends resistance and prevents spark “flash over” and misfire.
NGK fine wire tipped center electrode Laser Iridium spark plugs deliver slow wear rate, stable idle, superior anti-fouling, improved fuel efficiency and lower emissions
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
Longer service life with a copper core and ribbed suppressor seal for durability and performance
Replace all the engine plugs at the same time