ACDelco 41-943 Professional Platinum Spark Plug (Pack of 1) Fits 1985 Nissan 720

1-piece integral suppressor seal meters spark plug energy to help provide long electrode life and seals against compression leakage; ACDelco is an Original Equipment (OE) supplier and has the experience engineering and manufacturing components that achieve the highest quality standards required by vehicle manufacturers; Dual platinum tip for improved resistance to spark erosion and corrosive combustion chamber environment; Spark gap remains virtually unchanged during the life of the plug for increased fuel efficiency

One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal. Reduces radio frequency and engine interference, regulates spark plug energy and seals against compression pressures for long life. Double platinum point pad on center and ground electrode offer increased durability and consistent voltage demands to reduce wear on ignition system. 100% Pure Copper Core results in cooler electrode temperature for enhanced durability and superior fouling resistance.