HKS SUPER FIRE RACING M45 HKS HKS50003-M45
HKS SUPER FIRE RACING M45 HKS HKS50003-M45
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HKS SUPER FIRE RACING M45

HKS
HKS50003-M45
4957266720226
Spark Plugs
5 Units In Stock - Ships Next Business Day
$ 270.00
FREE Ground Shipping!
$ 270.00

SKU: 50003-M45 | UPC: 4957266720226

HKS Super Fire Racing M45 Spark Plugs 1989-2002 Nissan Skyline GT-R RB26DETT, Toyota MR2 SW20 3S-GTE, Mazda RX-7 FD 13B-REW

HKS Super Fire Racing M45 spark plugs deliver precise ignition for high-revving JDM engines. These fit Nissan Skyline GT-R R32/R33 RB26DETT, Toyota MR2 SW20 3S-GTE, Mazda RX-7 FD3S 13B-REW, Nissan Silvia S15 SR20DET, and similar turbocharged setups. Engineered for racing, they improve combustion for stronger throttle response and consistent power output under boost.

Key Features

  • 0.4mm Pure Iridium Center Electrode: Creates focused spark kernel for full combustion even in lean mixtures and high RPM.
  • Platinum Ground Electrode: Resists erosion for long service life over 40,000 miles in competition use.
  • Semi-Surface Discharge Design: Fires reliably in blow-by conditions from turbocharged or high-boost engines.
  • High-Temp Resistant Insulator: Handles extreme cylinder temps without pre-ignition in tuned motors.
  • M45 Heat Range: Matches demanding applications like RB26DETT and 3S-GTE for optimal thermal control.

Product Notes

  • Sold as single plug, order set of 6 for inline-6 or 4 for inline-4 engines.
  • Factory gap 0.7-0.8mm, verify and adjust for custom tunes.
  • Ships in protective foam insert box, 3.5 x 1.5 x 1.5 inches, 0.11 lbs net weight.

Installation Notes

  • Professional installation recommended.
  • Torque to 18-21 ft-lbs (25Nm) with anti-seize on threads.
  • Compatible with OEM coils and HKS ignition systems, inspect plug wires.

This Part Fits

Year Make Model Submodel
1989-1994 Nissan Skyline GT-R R32 RB26DETT
1995-1998 Nissan Skyline GT-R R33 RB26DETT
1999-2002 Nissan Silvia S15 Spec-R SR20DET
1988-1992 Toyota MR2 SW20 3S-GTE Turbo
1992-2002 Mazda RX-7 FD3S 13B-REW Twin Turbo
1994-1998 Nissan Silvia S14 SR20DET
1989-1994 Nissan Silvia S13 SR20DET

Why Choose HKS?

  • Motorsport-proven in Super GT and D1GP racing series.
  • Precision manufacturing from forged materials for reliability.
  • Engineered in Japan for JDM engines with decades of tuning expertise.

Frequently Asked Questions

  • Q: Will M45 fit R34 Skyline GT-R RB26DETT?
    A: Best for R32/R33 GT-R, use HKS M40 for R34 due to higher compression and boost levels.
  • Q: What material construction?
    A: Pure iridium center electrode 0.4mm, platinum ground strap 0.8mm, nickel-plated shell for corrosion resistance.
  • Q: What warranty coverage?
    A: HKS limited warranty against defects, contact distributor for claims with proof of purchase.

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Compact individual box 3.5x1.5x1.5 inches
  • Weight: 0.11 lbs

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