HKS SUPER FIRE RACING M45iL - Black Ops Auto Works
HKS SUPER FIRE RACING M45iL - Black Ops Auto Works
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HKS SUPER FIRE RACING M45iL

HKS
HKS50003-M45IL
4957266720288
Spark Plugs
20+ Units In Stock - Ships Next Business Day
$ 270.00
FREE Ground Shipping!
$ 270.00

SKU: 50003-M45IL | UPC: 4957266720288

HKS SUPER FIRE RACING M45iL Spark Plug for Subaru Impreza WRX STI 2002-2021

The HKS Super Fire Racing M45iL is an iridium spark plug built for high-performance Subaru engines. It fits Impreza WRX and STI models from 2002 to 2021 with EJ20 and EJ25 turbo setups. This plug provides reliable spark at 12000 RPM and above for consistent power delivery and reduced misfires.

Key Features

  • 0.6mm Iridium Center Electrode: Focuses energy into a pinpoint spark for complete combustion in high-compression turbo engines
  • Platinum Ground Electrode Pad: Resists erosion during extended high-heat operation to maintain gap and performance over time
  • Racing Heat Range M45: Balances heat dissipation to avoid pre-ignition while clearing deposits in boosted applications
  • M12x1.25 Thread 26.5mm Reach: Matches OEM dimensions for drop-in installation without adapter or modification
  • 14mm Hex Design: Allows use of standard socket tools and works with factory ignition coils

Product Notes

  • Sold individually. order four for inline-four engines or six for boxer-six
  • Factory gapped at 0.8mm. verify with feeler gauge before install
  • Compact packaging ships via padded envelope

Installation Notes

  • Professional installation recommended.
  • Torque to 18-22 ft-lbs using anti-seize on threads
  • Compatible with OEM HKS coil-on-plug systems

This Part Fits

Year Make Model Submodel
2002-2007 Subaru Impreza WRX
2004-2007 Subaru Impreza WRX STI
2008-2014 Subaru Impreza WRX STI
2015-2021 Subaru WRX STI

Why Choose HKS?

  • Developed for JDM rally and circuit cars since 1973
  • Tested in professional Subaru motorsport applications
  • Engineered in Japan with strict tolerances for reliability

Frequently Asked Questions

  • Q: Does this fit all Subaru WRX STI models from 2002-2021?
    A: Yes it matches EJ207 EJ255 and EJ257 engines in USDM Impreza WRX and STI chassis including hatchback sedan and wagon variants
  • Q: What material makes up the center electrode?
    A: Pure iridium alloy at 0.6mm diameter for superior durability and spark focus compared to standard nickel plugs
  • Q: What is the warranty and return policy?
    A: HKS offers a one-year limited warranty against defects. returns accepted within 30 days unused

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: 3.94 x 0.98 x 0.98 inches box
  • Weight: 1.6 ounces

Request For Information

Have questions about HKS SUPER FIRE RACING M45iL? Fill out the form below and we'll get back to you by the next business day.
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