SKU: 3545640379

HKS Super Fire Racing Spark Plug 50003-M50HL

Sale price$38.85 Regular price$43.17
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Description

HKS Super Fire Racing Spark Plug 50003-M50HLM 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 # 10
Thread Size: 12mm × 26.5mm
Wrench Size: 14mm

Fits:

2014 - 2015 HONDA ACCORD ALL 2.0 ELECTRIC/GAS LFA1 From 6/2013 Production Date  CR6 Chassis  HYBRID  Stock Plug/Heat Range: M12 Long Reach Hex14:7
2015 - 2016 HONDA FIT L4 1.5 ALL L15B1 From 9/2013 Production Date  GK5/GK6 Chassis  Stock Plug/Heat Range: M12 Long Reach Hex14:7
2011 - 2012 INFINITI G25 ALL 2.5 ALL VQ25HR From 11/2006 Thru 11/2013 Production Date  V36/NV36 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2007 - 2008 INFINITI G35 ALL 3.5 ALL VQ35HR From 11/2006 Thru 11/2013 Production Date  PV36 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2008 - 2013 INFINITI G37 ALL 3.7 ALL VQ37VHR From 10/2007 Thru 11/2013 Production Date  CKV36 Chassis  Coupe  Stock Plug/Heat Range: M12 Long Reach HEX14:8
2008 - 2013 INFINITI G37 ALL 3.7 ALL VQ37VHR From 12/2008 Thru 11/2013 Production Date  KV36 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:8
2011 - 2015 LEXUS CT200H ALL 43313 ALL ALL From 1/2011 Production Date  ZWA10 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:6
2011 - 2013 MAZDA 3 L4 2.0 ALL ALL From 9/2011 Thru 11/2013 Production Date  BLFFP Chassis  SKYACTIV  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2012 - 2013 MAZDA 6 L4 2.5 ALL ALL From 11/2012 Production Date  GJ5FP Chassis  SKYACTIV  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2013 - 2016 MAZDA CX-5 L4 2.0 ALL ALL From 2/2012 Production Date  KEEFW.KEEAW Chassis  SKYACTIV  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2013 - 2016 MAZDA CX-5 L4 2.5 ALL ALL From 10/2013 Production Date  KE5FW.KE5AW Chassis  SKYACTIV  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2007 - 2009 NISSAN 350Z ALL 3.5 ALL VQ35HR From 1/2007 Thru 11/2008 Production Date  HZ33 Chassis  Roadster  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2007 - 2009 NISSAN 350Z ALL 3.5 ALL VQ35HR From 1/2007 Thru 11/2008 Production Date  Z33 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2009 - 2016 NISSAN 370Z ALL 3.7 ALL VQ37VHR From 12/2008 Production Date  Z34 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:8
2009 - 2016 NISSAN GT-R V6 43315 ALL VR38DETT From 12/2007 Production Date  R35 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:8
2011 - 2015 NISSAN JUKE ALL 43252 ALL MR16DDT From 11/2010 Production Date  F15 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2008 - 2013 NISSAN ROGUE ALL 43222 ALL QR25DE From 8/2007 Thru 12/2013 Production Date  TNT31 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:6
2013 - 2016 SCION FR-S ALL ALL ALL ALL From 04/2012 Production Date  ZN6 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:9
2012 - 2015 SCION IQ ALL 43160 ALL 1NRFE From 8/2009 Production Date  NGJ10 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:6
2013 - 2017 SUBARU BRZ ALL ALL ALL ALL From 03/2012 Production Date  ZC6 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:9
2014 - 2015 SUBARU FORESTER ALL 2.0 ALL FA20F From 11/2012 Production Date  SJG Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:8
2012 - 2014 SUBARU LEGACY H4 2.5 ALL FB25 From 5/2012 Thru 6/2014 Production Date  BMM Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2013 - 2015 SUBARU LEGACY ALL 2.5 ALL FB25 From 10/2014 Production Date  BN9 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2012 - 2014 SUBARU OUTBACK H4 2.5 ALL FB25 From 5/2012 Thru 9/2014 Production Date  BRM Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2013 - 2015 SUBARU OUTBACK ALL 2.5 ALL FB25 From 10/2014 Production Date  BS9 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2015 - 2015 SUBARU WRX H4 2.0 ALL ALL From 8/2014 Production Date  VAG Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:8
2013 - 2015 SUBARU XV CROSSTREK ALL 2.0 GAS FB20 From 10/2012 Production Date  GP7 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2014 - 2015 SUBARU XV CROSSTREK ALL 2.0 ELECTRIC/GAS FB20 From 6/2013 Production Date  GPE Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:7
2017 - 2017 TOYOTA 86 ALL ALL ALL ALL From 04/2012 Production Date  ZN6 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:9
2006 - 2012 TOYOTA COROLLA ALL 43313 ALL 2ZRFE From 10/2006 Thru 4/2012 Production Date  ZRE142/ZRE144 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:6
2006 - 2012 TOYOTA COROLLA ALL 43313 ALL 2ZRFE From 10/2006 Thru 4/2012 Production Date  ZRE142G/ZRE144G Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:6
2007 - 2015 TOYOTA COROLLA ALL 43313 ALL 2ZRFE From 10/2007 Production Date  ZRE152N/ZRE154N Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:6
2014 - 2015 TOYOTA COROLLA ALL 43313 ALL 2ZRFAE From 5/2012 Production Date  ZRE162G Chassis  Stock Plug/Heat Range: M12 Long Reach HEX14:6
2009 - 2015
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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
SKU: 3545640379

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4.4 ★★★★★
Based on 25 reviews
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Product Reviews
C
Verified Purchase
Cynthia Brann
Omaha, US
★★★★★ 5
Alligator chew toy
Color: purple, Color: purple
Excellent for heavy duty chewing. Good size for medium size (15-25lbs.). An instant hit with my dog. Very durable. I feel it is safe for my dog to have unsupervised. I rate this HIGHLY RECOMMEND.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
S
Verified Purchase
S Bowman
Battle Creek, US
★★★★★ 3
Held Up Better Than Most for My Aggressive Chewer
Color: purple, Color: purple
I have to give the Fuufome Dog Chew Toy for Aggressive Chewers a solid 3 out of 5 stars. I have a very high-energy Lab mix named Boone who is an extremely aggressive chewer. Finding toys that last in our house is nearly impossible. This is actually his second toy like this - the first one is currently in my yard in three different pieces. While I don’t believe this toy was advertised as indestructible, I still hoped it would fully survive Boone’s chewing. Some parts have held up well, which is more than I can say for many other toys we’ve tried. However, he was still able to do some noticeable damage to the rubber portion after consistent use. To be fair, it did last longer than most toys we’ve purchased, which says a lot considering how tough Boone is on his things. For moderate chewers, I think this would hold up quite well. For truly aggressive chewers like mine, it’s tougher than average but still may show wear over time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Best toy for heavy chewers
Color: Green
My dog is an aggressive chewer and I have trouble finding toys that last longer than 5 minutes before being so destroyed it is no longer safe to let him keep it. He loves this toy and naws on it for hours daily. Yes, it has multiple chew marks, but it is still intact completely. No little pieces have been chewed off. I highly recommend this toy for any dog especially those who destroy every toy in seconds like mine does.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 12, 2025
N
Verified Purchase
Nirpno
Houston, US
★★★★★ 2
NOT Indestructible and a Nylon Product (NOT A CHEW TOY)
Color: Green, Color: Green
I gave this dog toy 2-stars based on my dog toy rating system (DTRS) for “Bruce” the Green Alligator! Unfortunately, I didn’t notice in the fine print of the product description on the website that this toy consisted of Nylon. If I noticed that description, I would’ve never purchased this product. Please do your own research on Nylon wrt teeth. I wasn’t impressed with the toy construction out of the box. The nylon head and tail sandwich the rubber body with soft rubber spines on Bruce’s back for easy gripping. This is not an “Indestructible” dog toy. Safety (1-rating): 1. I was always concerned about my dog’s teeth possibly cracking while he was chewing on Bruce’s Nylon ends. Thankfully, his teeth were fine throughout the use of this toy. 2. The Nylon came off in small pieces after a few hours and continued for the life of the toy; see picture. I never intended for my dog to swallow pieces of Nylon. 3. Bruce’s rubber rear end is where most of the damage occurred, as my dog was tearing off pieces of rubber and spines, which he thankfully passed through his system over a period of 2-3 days after I threw Bruce away; see picture. 4. The chewed-up Nylon ends were very hard, rough, sharp and pointy. There were occasions where I noticed my dog’s gums were bleeding as a result of chewing this toy. 5. Bruce is big enough not to swallow in its entirety, which is why I’m giving this a 1-rating for safety. 6. This is a molded product and not a plush product. Durability (2-rating): 1. It took my dog 1 to 2-weeks to get the toy in the shape that is shown on the posted photos. 2. The Nylon was immediately being scratched and scraped apart on day-1. Then I noticed pieces of Nylon coming off of Bruce after 3-4 days. 3. The rubber was immediately being punctured with small divots around the body on day-1. I noticed over the next couple of days that my dog was focusing on the rear end and trying to pull the rubber off the Nylon tail. 4. The rubber started coming off more quickly after 1-week, until I removed it all together. Squeaker (N/A): 1. Bruce has no squeaker. Fatality (2-rating): 1. Bruce had a longer life than most of my dog’s toys, but then again, I expected this to last much longer as the seller claims it is “Indestructible”, which it is not. 2. I tried filing off some of Bruce’s chewed up Nylon ends to smooth them out for more chew time, but came to my senses and just threw him away for safety concerns only. In conclusion, “Bruce” the Green Alligator should not be given as a chew toy, but more as a fetch toy, unless you want your dog to digest the Nylon and rubber materials. Days of Enjoyment Given to Dog: 12/16/2024 Dog Toy Death: 01/08/2025 Total Days Used: 13 days (11 days spent away from home during the holidays) About my dog “Cannoli” for comparison Breed: Blue Healer / Lab mix Sex: Male Age: 8-months Weight: 45-lbs Size: Medium Energy Level: High Chew Rating: Aggressive
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Reviewed in the United States on February 26, 2025
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
Great chew toy!!!
Size: 4 Inch (Pack of 2)
My dachshunds love all the bam bones!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026

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