SKU: 50003-M45I | UPC: 4957266720257
HKS Super Fire Racing M45i Iridium Spark Plug 1989-2002 GT-R Supra RX7 240SX
HKS Super Fire Racing M45i delivers high-performance iridium spark for racing engines in JDM turbo builds. Direct fit for Toyota Supra 2JZ-GTE Nissan Skyline GT-R RB26DETT Mazda RX7 13B-REW Nissan 240SX SR20DET and similar applications. Sharper ignition focus creates quicker throttle response cleaner combustion and steady power through 9000+ RPM.
Key Features
- 0.4mm Iridium Center Electrode: Provides precise spark focus for complete combustion and reduced misfires under boost.
- Racing Ground Electrode Design: Cut-back shape allows larger flame kernel growth for faster burn rates and more torque.
- Projected Insulator Tip: Resists carbon fouling in high-heat racing conditions keeping spark consistent lap after lap.
- Heat Range M45i: Matches demanding turbo engines like 2JZ RB26 handling 9000+ RPM without pre-ignition.
- 14mm Thread 19mm Reach: Direct OEM replacement with resistor for ECU compatibility and EMI suppression.
Product Notes
- Sold individually gap pre-set at 0.8mm adjust for specific tune.
- Use anti-seize on threads for easy future removal.
- Ships in protective foam-lined box dimensions 1in x 1in x 4in.
Installation Notes
- Professional installation recommended.
- Torque to 18-22 ft-lbs using thin-wall socket.
- Compatible with OEM coil packs no adapters needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1993-1998 | Toyota | Supra | 2JZ-GTE |
| 1989-1994 | Nissan | Skyline GT-R | R32 RB26DETT |
| 1995-1998 | Nissan | Skyline GT-R | R33 RB26DETT |
| 1999-2002 | Nissan | Skyline GT-R | R34 RB26DETT |
| 1992-2002 | Mazda | RX-7 | FD3S 13B-REW |
| 1989-1998 | Nissan | 240SX Silvia | S13 S14 SR20DET |
| 1999-2002 | Nissan | Silvia | S15 SR20DET |
| 1991-1995 | Toyota | MR2 Turbo | 3S-GTE |
Why Choose HKS?
- Proven in JGTC Super GT and drift racing worldwide.
- Hand-built in Japan with aerospace-grade materials.
- Engineered for 100000+ km durability in competition.
Frequently Asked Questions
- Q: Will this fit my R34 GT-R RB26DETT?
A: Yes direct replacement for NGK equivalents in 1999-2002 R34 GT-R RB26DETT engines. - Q: What material is the electrode?
A: Pure 99.9% iridium center electrode with platinum alloy pads for extreme heat resistance. - Q: What is the warranty and install tip?
A: 1-year manufacturer defect warranty. Install with OEM torque specs for best seal.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Foam-lined retail box 1 x 1 x 4 inches
- Weight: 0.11 lbs per plug
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