HKS Super Fire Racing Spark Plug 50003-M40

M-Series Super Fire Spark Plugs

HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.

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  The Iridium alloy is used because of its durability and reliability.   On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity.   With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration.   The Iridium plugs are available for multiple applications and offered in "colder" heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.

  Heat Range: NGK # 8
  Thread Size: 14mm × 19mm
  Wrench Size: 16mm

  Fits:

  ACURA	INTEGRA	ALL	1. 8	B18A1	1991 - 1993	DB1 Chassis	DOHC	Stock Plug/Heat Range: JIS:6	From 10/1991 Thru 4/1993 Production Date
  ACURA	LEGEND	V6	2. 5	C25A1	1985 - 1987	KA2 Chassis		Stock Plug/Heat Range: JIS:6	From 10/1985 Thru 2/1987 Production Date
  ACURA	LEGEND	V6	2. 7	C27A1	1987 - 1990	KA3/KA6 Chassis		Stock Plug/Heat Range: JIS:6	From 2/1987 Thru 9/1990 Production Date
  HONDA	CIVIC	L4	1. 5	D15B2	1987 - 1989	EF2/EF4 Chassis		Stock Plug/Heat Range: JIS:6	From 9/1987 Thru 9/1989 Production Date
  HONDA	CIVIC	L4	1. 5	D15B2	1989 - 1991	EF2/EF4 Chassis		Stock Plug/Heat Range: JIS:6	From 10/1989 Thru 8/1991 Production Date
  HONDA	CIVIC	L4	1. 5	D15B7	1992 - 1996	EY4 Chassis		Stock Plug/Heat Range: JIS:6	From 10/1992 Thru 2/1996 Production Date
  HONDA	CRX	L4	1. 5	D15B2	1987 - 1989	EF6 Chassis		Stock Plug/Heat Range: JIS:6	From 9/1987 Thru 9/1989 Production Date
  HONDA	CRX	L4	1. 5	D15B2	1989 - 1991	EF6 Chassis		Stock Plug/Heat Range: JIS:6	From 9/1989 Thru 2/1992 Production Date
  HONDA	PRELUDE	L4	2. 0	B20A5	1985 - 1991	BA1/BA4/BA5 Chassis	DOHC	Stock Plug/Heat Range: JIS:6	From 10/1985 Thru 9/1991 Production Date
  HONDA	PRELUDE	L4	2. 0	B20A5	1987 - 1991	BA4/BA5 Chassis		Stock Plug/Heat Range: JIS:5	From 4/1987 Thru 9/1991 Production Date
  HONDA	PRELUDE	L4	2. 0	B20A5	1989 - 1991	BA5 Chassis	DOHC TCS	Stock Plug/Heat Range: JIS:6	From 11/1989 Thru 9/1991 Production Date
  LEXUS	ES300	ALL	3. 0	3VZFE	1992 - 1996	VCV10 Chassis		Stock Plug/Heat Range: JIS:6	From 10/1991 Thru 8/1996 Production Date
  MAZDA	626	L4	2. 0	ALL	1987 - 1989	GDER/GDEA/GDEP/GDEB/GDES Chassis	DOHC	Stock Plug/Heat Range: JIS:6	From 5/1987 Thru 5/1989 Production Date
  NISSAN	180SX	ALL	1. 8	CA18DET	1989 - 1991	RS13/KRS13 Chassis		Stock Plug/Heat Range: JIS:6	From 4/1989 Thru 1/1991 Production Date
  NISSAN	300ZX	V6	3. 0	VG30T	1984 - 1989	HZ31/HGZ31 Chassis		Stock Plug/Heat Range: JIS:6	From 9/1983 Thru 6/1989 Production Date
  NISSAN	PULSAR NX	ALL	1. 6	CA16DE	1987 - 1987	EB12 Chassis		Stock Plug/Heat Range: JIS:6	From 8/1986 Thru 1/1990 Production Date
  NISSAN	SKYLINE	ALL	2. 0	RB20DE	1989 - 1991	HR32/HCR32/HNR32 Chassis		Stock Plug/Heat Range: JIS:5	From 5/1989 Thru 8/1991 Production Date
  NISSAN	SKYLINE	ALL	2. 0	RB20DET	1989 - 1991	HCR32/HNR32 Chassis		Stock Plug/Heat Range: JIS:5	From 5/1989 Thru 8/1991 Production Date
  NISSAN	SKYLINE	ALL	2. 5	RB25DE	1991 - 1993	ECR32/ER32 Chassis		Stock Plug/Heat Range: JIS:5	From 8/1991 Thru 8/1993 Production Date
  NISSAN	SKYLINE	ALL	2. 6	RB26DETT	1989 - 1994	BNR32 Chassis		Stock Plug/Heat Range: JIS:6	From 8/1989 Thru 1/1995 Production Date
  NISSAN	SKYLINE	ALL	2. 6	RB26DETT	1995 - 1998	BCNR33 Chassis		Stock Plug/Heat Range: JIS:6	From 1/1995 Thru 1/1999 Production Date
  NISSAN	SKYLINE	ALL	2. 6	RB26DETT	1999 - 2002	BNR34 Chassis		Stock Plug/Heat Range: JIS:6	From 1/1999 Thru 8/2002 Production Date
  TOYOTA	CELICA	ALL	2. 0	3SFE	1987 - 1989	ST162 Chassis		Stock Plug/Heat Range: JIS:5	From 8/1987 Thru 8/1989 Production Date
  TOYOTA	CELICA	ALL	2. 0	3SGELC	1987 - 1989	ST162 Chassis		Stock Plug/Heat Range: JIS:5	From 8/1985 Thru 8/1989 Production Date
  TOYOTA	CELICA	ALL	2. 0	3SGTE	1988 - 1989	ST165 Chassis		Stock Plug/Heat Range: JIS:5	From 10/1986 Thru 8/1989 Production Date
  TOYOTA	COROLLA	ALL	1. 6	4AFE	1988 - 1992	AE95 Chassis		Stock Plug/Heat Range: JIS:5	From 5/1988 Thru 5/1992 Production Date
  TOYOTA	COROLLA	ALL	1. 6	ALL	1985 - 1987	AE86 Chassis		Stock Plug/Heat Range: JIS:5	From 6/1983 Thru 5/1987 Production Date
  TOYOTA