SKU: 50003-M35IL | UPC: 4957266720264
HKS General Application M-Series Super Fire Racing Spark Plug M35IL-9
HKS M-Series Super Fire Racing Spark Plug features a 0.35mm fine-wire iridium center electrode for focused spark energy in high-rpm racing applications. Designed for general use in performance Japanese vehicles including Subaru Impreza WRX STI, Toyota MR2 Turbo, and Nissan Silvia models. Delivers stable combustion, quicker throttle response, and reduced misfires under extreme conditions.
Key Features
- 0.35mm Iridium Center Electrode: Concentrates discharge for reliable ignition at high engine speeds and lean mixtures
- Platinum Ground Electrode: Resists wear for consistent performance over long racing sessions
- Special Nickel Plating: Prevents carbon fouling and protects threads for easy removal after use
- Heat Range 35: Handles high heat loads in turbocharged or supercharged engines without pre-ignition
- Precision Insulator Design: Ensures optimal spark position and heat dissipation for peak efficiency
Product Notes
- Gap set to 0.8-0.9mm from factory, verify with engine specs before installation
- Use anti-seize on threads during install to prevent seizing
- Ships in protective individual box, one plug per package
Installation Notes
- Professional installation recommended.
- Torque to 18-22 ft-lbs using 16mm thin-wall socket
- Compatible with stock or aftermarket coil-on-plug and distributor systems
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2021 | Subaru | Impreza | WRX STI |
| 1989-1999 | Toyota | MR2 | Turbo SW20 |
| 1995-2002 | Nissan | Silvia | S14 S15 |
| 1999-2002 | Nissan | Skyline | GT-R R34 |
| 1989-1998 | Mitsubishi | Eclipse | GSX 2G |
Why Choose HKS?
- Proven in JDM racing series like Super Taikyu and JGTC
- Manufactured to exacting tolerances for consistent output
- Engineered specifically for boosted and high-compression setups
Frequently Asked Questions
- Q: Does this plug fit my Subaru STI?
A: Yes, direct fit for 2004-2021 Impreza WRX STI EJ25 engines, replaces NGK ILFR6B equivalents - Q: What electrode materials are used?
A: 0.35mm pure iridium center electrode with tapered platinum ground strap for durability - Q: What is the warranty?
A: Limited manufacturer defect warranty, inspect regularly in racing use
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Individual protective box 3in x 3in x 4in
- Weight: 0.11 lbs
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