HKS Super Fire Racing Spark Plug 50003-M40
SKU: 77126700154

HKS Super Fire Racing Spark Plug 50003-M40

Sale price$36.82 Regular price$40.91
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Description

HKS Super Fire Racing Spark Plug 50003-M40M 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. 0. 6mm Iridium Alloy Center Electrode Outer Electrode with Platinum Chip Short Type Outer Electrode (Anti Vibration) Thermal Edge Spark Support Gap M Series is recommended for reliable ignition, durability and anti carbon buildup under high load. The Iridium alloy is used

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.

  • 0.6mm Iridium Alloy Center Electrode
  • Outer Electrode with Platinum Chip
  • Short Type Outer Electrode (Anti-Vibration)
  • Thermal Edge
  • Spark Support Gap

M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.

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 
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 77126700154

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Elias
Omaha, US
★★★★★ 5
Affordable and Reusable
Size: 2.0L
The engine filter was really affordable it cost less then $15. I bought this filter because it was recommended from a family friend. It fitted my honda civic perfectly. Replacing the filter was so easy to replace. Replacing or changing the filter was easy it only took a few mins to do. The quality of the filter is really good and it feels like its perfect for my car. I would buy this filter over and over again thats how great it is.
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Reviewed in the United States on June 4, 2024
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P.f
Fort Morgan, US
★★★★★ 5
get it
Size: 2.0L
get it! i have a honda civic and i have bought this 3 times. works great!!
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Reviewed in the United States on February 25, 2026
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Gabriel Kliatchko
Carnegie, US
★★★★★ 4
Worth buying again.
Size: 2.0L
Works great. Right fit. Great value
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Reviewed in the United States on March 2, 2026
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Edwin
Cuba, US
★★★★★ 5
Great quality
Size: 2.0L
Perfect fit! Will definitely purchase it again
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Reviewed in the United States on December 12, 2025
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Pusheen3
San Leandro, US
★★★★★ 5
Works great on my 2018 Honda Civic EX
Size: 2.0L, Size: 2.0L
Been buying these for years. They are relatively cheap and easy to replace, so much better than getting ripped off at the dealer lmao. Compatibility and Installation - 5/5 Filtration Efficiency and Performance - 5/5 Durability and Value for Money - 4/5 - these are made to be replaced, so can't really do much about that!
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Reviewed in the United States on May 17, 2024

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