New, Used & OEM Parts Search
Can't find what you are looking for? Contact Us and we're happy to help.
HKS Super Fire Racing
The HKS Super Fire spark plugs feature high quality Iridium performance, designed and tested to handle increased vehicle performance.
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
HKS - Super Fire Racing
The HKS Super Fire spark plugs feature high quality Iridium performance, designed and tested to handle increased vehicle performance through aftermarket tuning.
Features
- 0.4mm diameter Iridium core
- Grooved electrode and available in a number of heat ranges
- Price is for a single plug, you need to increase quantity according to your vehicle
We ship to the United States and 150 other countries.
Japan Post EMS & ePacket, FedEx, DHL and more.
| Type | Thread | Wrench | Heat Range | Price | Order | |
|---|---|---|---|---|---|---|
| 50003-MR40XLB In stock at HKS | ||||||
| 12x26.5 mm | Bi-HEX 14 mm | 8 | | | ||
| 50003-MR45XLB In stock at HKS | ||||||
| 12x26.5 mm | Bi-HEX 14 mm | 9 | | | ||
| 50003-M35LF In stock at HKS | ||||||
| Conical Long Reach | 14x25 mm | 16 mm | 7 | | | |
| 50003-M40LF In stock at HKS | ||||||
| Conical Long Reach | 14x25 mm | 16 mm | 8 | | | |
| 50003-M35G In stock at HKS | ||||||
| G | 14x19 mm | 20.8 mm | 7 | | | |
| 50003-M40G In stock at HKS | ||||||
| G | 14x19 mm | 20.8 mm | 8 | | | |
| 50003-M45G In stock at HKS | ||||||
| G | 14x19 mm | 20.8 mm | 9 | | | |
| 50003-M40HL In stock at HKS | ||||||
| HL | 12x26.5 mm | 14 mm | 8 | | | |
| 50003-M45HL In stock at HKS | ||||||
| HL | 12x26.5 mm | 14 mm | 9 | | | |
| 50003-M50HL In stock at HKS | ||||||
| HL | 12x26.5 mm | 14 mm | 10 | | | |
| 50003-M35i Back in stock 13 Nov 2026 at HKS | ||||||
| ISO | 14x19 mm | 16 mm | 7 | | | |
| 50003-M40I In stock at HKS | ||||||
| ISO | 14x19 mm | 16 mm | 8 | | | |
| 50003-M45I In stock at HKS | ||||||
| ISO | 14x19 mm | 16 mm | 9 | | | |
| 50003-M35 In stock at HKS | ||||||
| JIS | 14x19 mm | 16 mm | 7 | | | |
| 50003-M40 In stock at HKS | ||||||
| JIS | 14x19 mm | 16 mm | 8 | | | |
| 50003-M45 In stock at HKS | ||||||
| JIS | 14x19 mm | 16 mm | 9 | | | |
| 50003-M35iL In stock at HKS | ||||||
| Long Reach | 14x26.5 mm | 16 mm | 7 | | | |
| 50003-M40iL In stock at HKS | ||||||
| Long Reach | 14x26.5 mm | 16 mm | 8 | | | |
| 50003-M45iL In stock at HKS | ||||||
| Long Reach | 14x26.5 mm | 16 mm | 9 | | | |
| 50003-MR45HLZ In stock at HKS | ||||||
| Protrusion | 12x26.5 mm | 14 mm | 9 | | | |
| 50003-MR40XLZ In stock at HKS | ||||||
| Protrusion | 12x26.5 mm | 16 mm | 8 | | | |
| 50003-MR45XLZ In stock at HKS | ||||||
| Protrusion | 12x26.5 mm | 16 mm | 9 | | | |
| 50003-M45RE In stock at HKS | ||||||
| RE | 14x12.7 mm | 20.8 mm | 9 | | | |
| 50003-M50RE In stock at HKS | ||||||
| RE | 14x12.7 mm | 20.8 mm | 10 | | | |
| 50003-M525RE In stock at HKS | ||||||
| RE | 14x12.7 mm | 20.8 mm | 10.5 | | | |
| 50003-M40X In stock at HKS | ||||||
| X | 12x19 mm | 16 mm | 8 | | | |
| 50003-M40XL In stock at HKS | ||||||
| XL | 12x26.5 mm | 16 mm | 8 | | | |
| 50003-M45XL In stock at HKS | ||||||
| XL | 12x26.5 mm | 16 mm | 9 | | | |
About HKS
HKS was founded in October 1973 by Hiroyuki Hasegawa, a former Yamaha engineer, and Goichi Kitagawa, with start-up capital from Sigma Automotive; the name comes from Hasegawa, Kitagawa and Sigma. It began in a small shed at the foot of Mount Fuji, in Fujinomiya, Shizuoka, and is still based there.
In 1974 HKS built one of the first bolt-on turbo kits, for the Nissan L20 engine in the Skyline, raising output from 115 to 160 PS. Turbocharging made its name; today it also makes exhausts, springs, shocks and coilover suspension, and it marked its 50th anniversary in 2023.
Associated JDM Parts
326 Power Racing Gloves
USD $ 49.47 to 52.07
Cusco Neodymium Aluminum Drain Bolt
USD $ 15.91
326 Power Wheel Nut Medium + Crown Cap Set
USD $ 43.19
