HKS Super Fire Racing Spark Plug General Application M-Series hks50003-M35iL
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The HKS Super Fire Racing M-Series spark plug (50003-M35iL) is a high-performance iridium plug engineered by HKS for tuned and forced-induction engines that demand stronger, more reliable ignition.
Key Features & Benefits:
- 0.6mm iridium alloy center electrode — lowers the voltage needed to fire and improves ignitability for a cleaner spark
- Platinum square-tip ground electrode — boosts wear resistance and ignition performance alongside the iridium tip
- Long-reach M-Series design — engineered for improved fouling and fog resistance under high-boost, high-RPM conditions
- Enhanced durability — built to handle the heat and cylinder pressures typical of tuned engines
- Supports stronger, more complete combustion — helps improve throttle response on modified setups
Specifications:
- Part Number: 50003-M35iL
- Brand: HKS
- Thread Diameter: 14mm
- Thread Reach: 26.5mm (long-reach type)
- Hex Size: 16mm
- Heat Range: equivalent to NGK #7
Usage Suggestions: A popular upgrade for turbocharged and naturally aspirated performance applications seeking more reliable ignition than stock plugs.
