Spark plug connector JMP. Yamaha YZF 750 R 4HN1 1993. Yamaha YZF 750 R 4HN2 1994. Yamaha YZF 750 R 4HN3 1995. Yamaha YZF 750 R 4HN4 1996. Yamaha YZF 750 R 4HN4 1997. Yamaha YZF 750 R 4HN4 1998. This ensures a constant resistance value with only slight deviation under overload conditions.
