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Description
HKS Super Fire Racing Spark Plug 50003-M40HLM 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: 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 | 1.8 | 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 | 3.8 | ALL | VR38DETT | From 12/2007 Production Date | R35 Chassis | Stock Plug/Heat Range: M12 Long Reach HEX14:8 | |
| 2011 - 2015 | NISSAN | JUKE | ALL | 1.6 | ALL | MR16DDT | From 11/2010 Production Date | F15 Chassis | Stock Plug/Heat Range: M12 Long Reach HEX14:7 | |
| 2008 - 2013 | NISSAN | ROGUE | ALL | 2.5 | 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 | 1.3 | 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 | 1.8 | 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 | 1.8 | 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 | 1.8 | ALL | 2ZRFE | From 10/2007 Production Date | ZRE152N/ZRE154N Chassis | Stock Plug/Heat Range: M12 Long Reach HEX14:6 | |
| 2014 - 2015 | TOYOTA | COROLLA | ALL | 1.8 | ALL | 2ZRFAE | From 5/2012 Production Date | ZRE162G Chassis | Stock Plug/Heat Range: M12 Long Reach HEX14:6 | |
| 2009 - 2015 | TOYOTA | |||||||||
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
4.7 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 4
Offers tons of activity
Color: Turtle
My 70lb dog LOVES this turtle toy, was worth the price. He will play and play until he’s exhausted. We have to give him breaks from it. We use the second setting which is just for movement, no music. The only aspect I don’t like is that he will inadvertently press the button when he’s biting the toy, changing the setting and sometimes has turned it off. The velcro is super strong, which is good but makes it difficult to open. Battery life is decent, lasted a few days with him playing with it an hour or so each evening. I like the auto shut off after 30 minutes of no movement.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Keeps Aussie Entertained for Hours
Size: 4 Pieces, Size: 4 Pieces
This puzzle toy has quickly become one of my dog’s favorite sources of entertainment. It keeps him busy, challenged, and happy. The variety of difficulty levels gives him a challenge, and it is so fun to watch him work through the puzzles. Even when he is just playing with individual pieces, he is entertained.
It is also very user-friendly. Setup is simple, and it is not overly complicated for the owner to manage. Cleaning is surprisingly easy, too. The pieces wipe down well, and nothing traps food or slobber, which is a huge win compared to some other toys we have tried.
Functionality-wise, it is fantastic. The levels of difficulty actually work as intended, and I like being able to adjust them based on my dog’s mood. It is durable, too. The weight and sturdiness of the pieces keep them from sliding around too much during play, and they are tough enough to withstand my Aussie’s powerful chewing without damage. I also like how it is numbered so you can quickly move onto the next level without too much thought. With that, I have noticed the higher levels are challenging, and my Aussie has yet to get through them all. Eventually he gets bored and stops trying.
It is a high-quality, fun, and engaging toy that provides mental stimulation, holds up to rough play, and is easy for me to maintain. Definitely one of the best puzzle toys I have tried!
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Reviewed in the United States on August 19, 2025
★★★★★ 5
She loves it!
Size: 4 Pieces, Size: 4 Pieces
Tried it as soon as we received it. My dog is a doberman german shepherd mix. I used multiple levels to see what my dog can figure out. It kept her pretty occupied for about 15 minutes and then I readjusted the last level so she could figure it out. With that being said, it can definitely keep them busy for longer! This is going to be a great toy, we love it already. Very durable for my girl, she's a pretty heavy chewer. Very easy to clean because it's a rubber material. The overall puzzle design is also great, really gets them to think. Very easy to stuff treats or kibble inside. Lastly, I LOVE that it's blue and yellow! I wish more toys were in blue and yellow because dogs are color blind! I would definitely consider getting more pieces in the future.
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Reviewed in the United States on March 15, 2026
★★★★★ 4
Good product
Size: 6 Pieces
Fun for dogs with anxiety or bored. Easy to fill and clean with different options to build.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Durable and fun
Size: 4 Pieces, Size: 4 Pieces
I have a chewer who gets bored in the afternoon. She loves these Lego blocks. They’re sturdy enough for a big chewer and they hold her interest . She really enjoys figuring out how to get her breakfast!
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Reviewed in the United States on June 4, 2026