HKS 50003-M45XL M-Series Racing Spark Plug M45XL Heat Range 45

HKS 50003-M45XL M-Series Super Fire Racing Spark Plug (M45XL)    Genuine HKS Super Fire Racing M-Series spark plug designed for stable ignition and durability in demanding, high-load performance applications. M-Series plugs feature HKS-specific anti-fouling and durability design elements for performance-oriented engines. Part Number HKS: 50003-M45XL Model: M45XL (XL Type) Key Features (per HKS M-Series) 0.6mm iridium alloy center electrode for focused spark energy and long service life Platinum-tipped ground electrode for improved durability Short-type / anti-vibration ground electrode design to help withstand harsh conditions Anti-fouling design features (Thermal Edge & Spark Support Gap) to help reduce carbon buildup Specifications (M45XL) Heat Range: HKS 45 Thread Size / Reach: 12mm x 26.5mm Hex / Wrench Size: 16mm Sold individually.   Please confirm fitment before purchase. Spark plug compatibility depends on your engine’s required thread/reach, seat type, heat range, and your tune/setup. To verify fitment, match your application to these specs: 12mm thread 26.5mm reach 16mm hex HKS heat range 45 Professional installation recommended Use proper torque and gap per your engine/tuner specifications