The ngk spark plug for honda nb 50 1983-1986 is part of the latest collection from ngk.Features: trivalent metal plating provides superior anti-corrosion and anti-seizing properties pure alumina silicate ceramic insulator, provides superior strength and better heat transfer triple seals prevent leakage corrugated ribs prevent flashover copper core aids in heat removal specifications: center electrode projection: projected center electrode type: standard electrical resistance: 5k ohms electrode tip material: nickel alloy ground electrode configuration: single ground electrode shape: standard heat range: 6 hex size: 20.6 Mm 13 16 model: standard product name: spark plug spark gap imperial: 0.028 Spark gap metric: 0.7 Mm to fit: honda nb 50 1983 aero american models honda nb 50 1983 vision x european models honda nb 50 1984 aero american models honda nb 50 1984 vision x european models honda nb 50 1985 aero american models honda nb 50 1985 vision x european models honda nb 50 1986 aero american models honda nb 50 1986 vision x european models honda nb 50 1987 aero american models honda nd 50 m 1985 melody european models honda ne 50 1985 vision european models honda ne 50 1986 vision european models honda ne 50 1987 vision european models honda ne 50 1990 vision european models honda nh 90 1991 yupi european models honda nh 90 1992 yupi european models honda nh 90 1993 yupi european models honda nh 90 1994 yupi european models honda sa 50 s 1988 vision met in european models...