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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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Description
HKS Super Fire Racing Spark Plug 50003-M45GM 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 # 9
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.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.5 ★★★★★
Based on 1569 reviews
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Product Reviews
★★★★★ 5
Long lasting
Size: Medium
My dogs love these and they last pretty long. I take them away when they get very small so I think they’re pretty safe.
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Reviewed in the United States on May 27, 2026
★★★★★ 3
Meant for bigger dogs than mine
Size: Small
I bought this for my 10 month old pup who’s a VERY aggressive chewer. I’m going to say this is made for a large, older (than mine) dog. She tried to chew a couple times but eventually just walked away from it when I offered it to her and she had only made a few scratches in it. If you have that bigger dog that’s an aggressive chewer, it would be a good value for your money and will keep the engagement high for a long time with its heavy duty quality.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Finally… a dog chew that doesn’t become a homemade prison shank
Size: Medium
My dog has a real talent: turning every “tough chew” into a sharp, weaponized shard that could star in an episode of Locked Up: Canine Edition. But THIS chew? Absolute game changer.
For the first time ever, I can relax—no splinters, no pointy edges, no fear he’s secretly crafting a shiv under the couch. Just happy, safe chewing that actually lasts longer than five minutes.
It’s durable, it’s safe, it keeps him busy, and I no longer feel like I’m living with a furry little inmate planning an escape.
Highly recommend if your dog chews like he’s got nothing but time.
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Reviewed in the United States on January 29, 2026
★★★★★ 4
Would buy again
Size: Small
Would have given 5 stars, but my dog was able to chew this down pretty quickly, so not the most durable. I do like that this is made with better material than other dog chews, so I would buy again.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Convenient Credit Card
This is an effortless and convenient way to purchase Amazon products. Unfortunately I am on it almost daily so the cash back feature is a plus.
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Reviewed in the United States on June 10, 2026