SKU: 90549586307

HKS Super Fire Racing Spark Plug 50003-M40G

$36.82 $40.91
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Description

HKS Super Fire Racing Spark Plug 50003-M40GM 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: 20.8mm

Fits:

1985 - 1989 HONDA ACCORD L4 1.8 ALL From 6/1985 Thru 9/1989 Production Date  CA1 Chassis  Stock Plug/Heat Range: LONG:5
1987 - 1989 HONDA ACCORD L4 2.0 ALL From 5/1987 Thru 9/1989 Production Date  CA5 Chassis  Stock Plug/Heat Range: LONG:5
1988 - 1989 HONDA ACCORD ALL 2.0 A20A3 From 4/1988 Thru 9/1989 Production Date  CA6 Chassis  Stock Plug/Heat Range: LONG:5
1982 - 1987 HONDA PRELUDE L4 1.8 ALL From 11/1982 Thru 4/1987 Production Date  AB83 Chassis  Stock Plug/Heat Range: LONG:6
1983 - 1987 MAZDA 626 L4 2.0 ALL From 10/1983 Thru 2/1987 Production Date  GCEP Chassis  Stock Plug/Heat Range: LONG:6
1993 - 1997 MITSUBISHI DIAMANTE ALL 3.0 6G72 From 1/1993 Thru 1/1997 Production Date  K45 Chassis  Wagon SOHC  Stock Plug/Heat Range: LONG:6
1990 - 1995 MITSUBISHI ECLIPSE ALL 2.0 4G63 From 2/1990 Thru 6/1995 Production Date  D22A Chassis  DOHC  Stock Plug/Heat Range: LONG:6
1990 - 1995 MITSUBISHI ECLIPSE ALL 2.0 4G63 From 2/1990 Thru 6/1995 Production Date  D27A Chassis  Stock Plug/Heat Range: LONG:6
1995 - 1999 MITSUBISHI ECLIPSE ALL 2.0 4G63 From 6/1995 Thru 8/1999 Production Date  D32A Chassis  Stock Plug/Heat Range: LONG:6
1997 - 1999 MITSUBISHI ECLIPSE ALL 2.0 4G63 From 3/1997 Thru 8/1999 Production Date  D38A Chassis  Stock Plug/Heat Range: LONG:6
1992 - 1992 MITSUBISHI LANCER ALL 2.0 4G63 From 10/1991 Thru 1/1994 Production Date  CD9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
1993 - 1994 MITSUBISHI LANCER ALL 2.0 4G63 From 1/1994 Thru 9/1994 Production Date  CE9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
1995 - 1995 MITSUBISHI LANCER ALL 2.0 4G63 From 9/1994 Thru 8/1996 Production Date  CE9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
1996 - 1996 MITSUBISHI LANCER ALL 2.0 4G63 From 8/1996 Thru 12/1997 Production Date  CN9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
2003 - 2005 MITSUBISHI LANCER ALL 2.0 4G63 From 2/2004 Thru 2/2005 Production Date  CT9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
1997 - 1998 MITSUBISHI LANCER ALL 2.0 4G63 From 1/1998 Thru 12/1998 Production Date  CP9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
1999 - 2000 MITSUBISHI LANCER ALL 2.0 4G63 From 1/1999 Thru 1/2001 Production Date  CP9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
1999 - 2000 MITSUBISHI LANCER ALL 2.0 4G63 From 1/2000 Thru 1/2001 Production Date  CP9A Chassis  Tommi Makinen Edition DOHC  Stock Plug/Heat Range: LONG:7
2001 - 2002 MITSUBISHI LANCER ALL 2.0 4G63 From 2/2001 Thru 3/2002 Production Date  CT9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
2003 - 2005 MITSUBISHI LANCER ALL 2.0 4G63 From 2/2003 Thru 1/2004 Production Date  CT9A Chassis  DOHC  Stock Plug/Heat Range: LONG:7
1988 - 1991 MITSUBISHI MONTERO V6 3.0 ALL From 9/1988 Thru 1/1991 Production Date  L141/146GW Chassis  Stock Plug/Heat Range: LONG:5
1988 - 1990 MITSUBISHI STARION ALL 2.6 ALL From 5/1988 Thru 10/1990 Production Date  A187A Chassis  Stock Plug/Heat Range: LONG:7
1985 - 1988 SUBARU JUSTY L3 1.2 ALL From 10/1985 Thru 10/1988 Production Date  KA7/KA8 Chassis  Stock Plug/Heat Range: LONG:6
1988 - 1994 SUBARU JUSTY L3 1.2 ALL From 11/1988 Thru 3/1994 Production Date  KA7/KA8 Chassis  Stock Plug/Heat Range: LONG:6
1983 - 1986 TOYOTA CELICA L6 2.8 5MGE From 8/1983 Thru 2/1986 Production Date  MA61 Chassis  Stock Plug/Heat Range: LONG:5
1988 - 1992 TOYOTA LAND CRUISER ALL 4.0 3FE From 8/1988 Thru 8/1992 Production Date  FJ62G/FJ80G Chassis  Stock Plug/Heat Range: LONG:5
1987 - 1990 TOYOTA TERCEL ALL 1.5 3E;3EE From 5/1986 Thru 9/1990 Production Date  EL31 Chassis  Stock Plug/Heat Range: LONG:5
1989 - 1992 VOLKSWAGEN GOLF ALL 1.8 RV From 10/1989 Thru 3/1992 Production Date  E-19RV Chassis  Stock Plug/Heat Range: LONG:6
1989 - 1992 VOLKSWAGEN JETTA ALL 1.8 ALL From 10/1989 Thru 11/1991 Production Date  E-16RV Chassis  Stock Plug/Heat Range: LONG:6
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  1. Standard Shipping : 3-10 business days
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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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90549586307

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4.3 ★★★★★
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A
Verified Purchase
Amy Biggs
Lexington, US
★★★★★ 5
Lifesaver for a Single mom With Kids and Constant Messes
Package Size Name: Double, Size: 24 Double Rolls (Pack of 1), Package Size Name: Double, Size: 24 Double Rolls (Pack of 1)
What I Expected: I honestly expected these to be just another basic paper towel that looked good in the listing but ran out fast, fell apart, or left a lot of lint the second my kids spilled something. The listing made them seem thick, strong, and a good value for a busy household. What I Got: After using them for a few weeks, I can say they have been a literal lifesaver. Between two kids, muddy shoes, spilled juice in the truck, quick cleanups in the garage, and wiping down the RV before a trip, these have held up way better than I expected. I’ve noticed minimal shrinkage after wet use, and they rarely leave any lint behind, which is a huge plus for cleaning everything from countertops to tools. What I Like: The pick-a-size sheets are great because I do not waste a full sheet for a small mess, and the towels are strong enough that I usually only need one. They are soft enough for everyday kitchen use but still durable when cleaning greasy tools or bigger messes. Quick tip for buyers: keep an extra roll in the truck or RV because they come in handy more than you think. What I Don’t Like: The only downside is that the rolls are large and take up a little more storage space. Final Verdict: Great for families, busy parents, garages, trucks, or RVs. Minimal shrinkage, low lint, and super durable—I will definitely buy these again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2026
S
Verified Purchase
Shopper59
Carnegie, US
★★★★★ 5
Sparkle Pick-A-Size
Package Size Name: Double, Size: 24 Double Rolls (Pack of 1)
These are not large rolls. I can't say if they are lint free or not. I only use them for spills or to dry my hands. The price is right and they do the job we need. These are satisfactory paper towels for my house. I will buy them again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
J
Verified Purchase
Joshua
Whiting, US
★★★★★ 5
The ultimate water bottle
Color: Iced Breeze, Size: 24 Ounces
I can’t believe I’m so excited about a water bottle. The design is amazing - I love that there’s no straw poking up but there’s still a straw sip function. I like that the carrying hook doubles as a lid locking mechanism. This bottle feels very sturdy but it’s sleek and easy to grab - I have small hands and it isn’t a problem for me to drink from with one hand. It’s also really nice that this bottle fits in standard couple holders both at the gym in the machines and in my car. The color selection is so fun and I am pleased that my bottle looks exactly as pictured. My water has stayed cold and my ice cubes frozen for over 12 hours now. Cannot recommend enough!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
R
Verified Purchase
Rob W
Whiting, US
★★★★★ 5
Keeps drinks cold all day
Color: Very, Very Dark, Size: 24 Ounces
We got this Owala bottle for our son to use as his everyday school water bottle, and it has been excellent. The 24oz size holds plenty of water for the school day without being overly bulky or heavy to carry around. The insulation works extremely well. Drinks stay cold all day long, even when the bottle sits in a backpack for hours. That’s probably the feature we’ve been most impressed with so far. It’s also been great for car trips since it keeps water cold for extended periods without needing constant refills. The design is really well thought out too. The built-in straw makes it easy to drink from quickly during class or while traveling, and the lid feels secure and leak-resistant when closed. It also has a clean, modern look that feels a little more premium than many standard water bottles. Build quality feels solid overall, and it seems designed to hold up well to everyday use from school, sports, and travel. Overall, this has been a fantastic everyday water bottle and definitely lives up to the hype. Keeps drinks cold, holds a good amount of water, and works equally well for school or road trips.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
M
Verified Purchase
Morgan A from VA
Chelsea, US
★★★★★ 5
Cup holder friendly AND functional!
Color: Denim, Size: 24 Ounces, Color: Denim, Size: 24 Ounces
I have a dupe of this cup in a 32oz version and I’m in love with it except for one thing, it doesn’t fit in the cup holders of my vehicles very well. For Father’s Day, my husband needed an insulated cup for when he works outside, his current one doesn’t fit in a cup holder. This was a perfect option for him since he likes the one I have. First things first: this thing keeps liquids COLD for a VERY long time. Haven’t put anything hot into it and don’t plan to so I cannot attest to that. It’s lightweight, durable, and the versatility with the straw is really what makes this cup stand out. You can use a straw OR take a sip without changing adaptors or adding a straw. The straw is basically built into the spout. It’s leakproof which I greatly appreciate. With this being on sale I jumped on it. These are such nice cups, and I can confirm they fit the cup holders of my vehicles from my 22 RAV4 to my 05 Corolla. This is a definite buy and I really hope my husband gets me one since my dupe doesn’t fit in my cup holders. As for the 24oz of this cup, it fits. The colors are fun. It’s unique, and extremely functional.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026

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