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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 |
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4.5 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Nice strands
Size: 100ft, Style: 10 Gauge
Silky smooth marine grade wire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
My Denon ROCKS
Style: AVR-X3800H
Pros:
Nine Amps power a 9.1 or 7.1.2 or 5.2.4 speaker configuration because most of us want Atmos to work in our listening room.
Plenty of power available in each amp and each configuration
Atmos DTS IMAX plus any other codec or audio visual enhancement is available. Yes, 4K 8K HDR all supported.
Three HDMI outputs
Preamp output for up to 11 channels so any combination of preamp vs. power amplifier output is available. But not both preamp AND power amp for the same channel. And you can pick and choose which channel you want for pre amp vs power amp individually. So it can function as a AV Preamp Processor at very reasonable price point.
DAC (changes Digital Signal to Analog) with all the power amplifiers you could want. High quality, including DSD, is an added bonus.
Setup customizable to the nth degree. Some people might say too many options but that’s the way we get this AVR to meet our individual requirements
I’ve been working with the setup for the last week and have dialed in for my needs. Still playing with the HEOS but I think it’s working well for now. Various HDMI inputs need different surround settings, I like the DTS best, but the unit has a way to include default settings for each HDMI. I’ll use default settings with my BluRay. And I’ll use direct or pure or whatever the source allows for music and streaming. And most users will want a streaming stick like the Amazon one otherwise you can’t get the Atmos signal to work. Older streamers won’t pass the Atmos signal though.
The only problem with a device like this is you will buy more speakers and amps and possibly even more subwoofers, the unit will support 4 subwoofers. Enjoy
So I will get back to you with comments about longer term issues. BTW the 3800 was a refurbished version for $999 . Definitely an excellent value. The online reviews are quite favorable. Even the audiophiles are still learning the nuances of setup. It’s worth the extra effort to get the most out of each user’s individual existing equipment.
Cons: None. I’ve been an audio video nerd for decades so I can say that the setup effort is easily justified once the user, with user manual in hand, patiently works out the desired configuration. The audio expert online information is invaluable.
I have 21MBS broadband service in my region. Even with this limitation I have more than enough added capacity with the Denon that I would never return it to seller unless someone catastrophic happened. Yes I like it that much.
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Reviewed in the United States on March 1, 2024
★★★★★ 5
Denon Refurb AVR-X3800h.. IMPRESSIVE!
Style: AVR-X3800H, Style: AVR-X3800H
I did a lot of homework and made contact with the seller. Great communication. Turns out all of the Denon refurbished receivers are inspected or repaired by DENON, and re-certified only after passing tests upon functional as new. It arrived in a Denon box, very well insulated. Contained all NEW accessories like new & sealed. Appears flawless. The setup was easy since I have years of previous experience with surround systems. This replaced my Onkyo of 10 years. And WOW, the difference is phenomenal! Great onscreen setup + smart phone app makes it nice for making fine tuning adjustments. This model is packed with all the latest tech. The Durac Live is easily downloadable, but I am so impressed with the Audacy setup I didn’t buy the download. Great value refurbished. It comes with a one year warranty, so I purchased the 3 year assurion warranty since I saved so much money. Very happy.
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Reviewed in the United States on February 18, 2024
★★★★★ 1
PITA to Set-Up and Hard to Connect to WiFi
Style: AVR-X3800H
This one went right back after hours spent on set-up. Room correction software was buggy as well.
I couldn't get it going and called it a day and bought the Onkyo TX-RZ50 which is equally hard to get consistent sound and and hard to cnnect to WiFi and Bluetooth. Onkyo support, however, is far superior.
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Reviewed in the United States on September 28, 2024
★★★★★ 5
Great receiver, Digital Room Correction is worth it
Style: AVR-X3800H
Being a refurb, the unit seems brand new.
No issues at all, working great so far after months of use.
Audyssey XT32 works really well in my main seating position. Any other listening position on the couch is not great, but not the receivers issue. Just noting that there’s only so much you can fix with digital room correction, my room is the opposite of ideal.
Love the multiple sub control. Dynamic EQ is fantastic also.
Audyssey transformed my music. My 5.2 speaker setup is Frankenstein’d together with different brands and it was interesting to see the drastically different frequency responses of each speaker. With it all tuned, it sounds great. I find myself just sitting down and jamming to music for hours.
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Reviewed in the United States on January 8, 2024