Skip to content
🏁 Memorial Day Sale: Up to 25% Off Select Brands | Shop Now 🏎️
🏁 Memorial Day Sale: Up to 25% Off Select Brands | Shop Now 🏎️
A set of four HKS Nissan/Infinity VQ35HR M-Series Super Fire Racing Iridium Spark Plugs, displayed against a white background.

HKS 50003-M45HL Super Fire Racing Spark Plug M45HL Iridium (4 Pack)

SKU HKS-50003-M45HLx4
by HKS
$ 121.00 - $ 121.00
$ 121.00
$ 121.00 - $ 121.00
$ 121.00

HKS Super Fire Racing Spark Plug M45HL (50003-M45HL) 4 Packs


Genuine HKS M-Series Super Fire Racing spark plug designed for stable ignition, durability, and reduced carbon buildup under demanding performance conditions.

KEY FEATURES

  • 0.6mm iridium alloy center electrode for strong ignition and long service life

  • Platinum chip outer electrode for durability

  • Short-type anti-vibration outer electrode design

  • Thermal Edge + Spark Support Gap features help reduce carbon deposits

SPECIFICATIONS

  • Brand: HKS

  • Part Number: 50003-M45HL

  • Series: Super Fire Racing (M-Series)

  • Plug Type: HL Type

  • Thread / Reach: 12mm x 26.5mm

  • Hex Size: 14mm

  • Heat Range: 45 (HKS heat range)

  • Quantity: Set of 4 

WHAT’S INCLUDED

  • (4) HKS Super Fire Racing Spark Plug (50003-M45HL) 

FITMENT & COMPATIBILITY
Spark plug fitment depends on your engine’s required thread/reach, seat type, heat range, and tune/setup. Confirm the specs match your application before ordering.