HKS Super Fire Racing Spark Plug - M Type Heat Range 850003-M40
HKS Super Fire Racing Ultimate spark plug "M".
Ignitionability, durability, anti-insulation are all reinforced. HKS has made the best plug for both tuning engines and stock engines.
Performance and Efficiency
- Increased Ignition Performance
Decreased voltage requirement strengthens ignition performance under harsh conditions like lean mixture or high boost pressure.
- Improved Durability
New material and design improve durability which allows for use under hard combustion conditions like continuous high load during circuit driving or aggressive tuning.
* Improper combustion condition and wrong heat range selection may cause damage to the spark plug.
- Decreased Carbon Deposits
Thermal edge and spark support gap help prevent carbon buildup for better ignition under various combustion conditions.
For orders dispatched from/within Australia we use the services of, Border Express, Australia Post Registered & Express, and local couriers for Sydney Metro deliveries.
Please note that in some circumstances we are not able to use your chosen shipping method.
For international orders we use the services of DHL/UPS. Please note that International Orders require longer processing times and may take up to 1-2 days to ship if the item is in stock.
HKS M-Series Super Fire Racing spark plugs are high performance Iridium plugs designed to handle advanced levels of tuning and provide Improved ignition performance, durability and anti-carbon build-up.
- 0.6mm Iridium Alloy Center Electrode
Iridium alloy center electrode reduces voltage requirement and improves ignition performance and durability.
- Outer Electrode with Platinum Chip
The outer electrode incorporates a square platinum chip which improves durability, and combining with the iridium center electrode boosts ignition performance.
The outer electrode features a shortened tip design and tapered shape while maintaining the necessary space for proper ignition.
- Short Type Outer Electrode (Anti-Vibration)
The outer electrode has been shortened and engineered with the ideal shape to decrease weight for resistance against vibration. This anti-vibration design improves longevity of the outer electrode.
- Thermal Edge
After long idling or under various combustion conditions, carbon buildup can occur causing misfires. The thermal edge of the ceramic insulator discharges to help decrease carbon deposits.
- Spark Support Gap
Discharge occurs in the spark support gap (space between the tip of insulator and the base of the outer electrode) to help prevent carbon buildup.
HKS provides a complete database for other model vehicles also suitable not listed above please confirm which plug you need prior to purchasing.
Please note that JustJap is not responsible if plugs are purchased incorrectly using the HKS part finder, returns/exchanges will not be accepted if wrong plugs are purchased.
- Nissan Skyline R31 (RB20DE/RB20DET)
- Nissan Skyine R32 (RB20DE/RB20DET/RB25DE/RB26DETT)
- Nissan Skyline R33 (RB25DE/RB25DET/RB20DE/RB26DETT)
- Nissan Skyline R34 (RB26DETT)
- Nissan Silvia S13/180SX (CA18DET/CA18DE)
- Nissan Laurel C33/C34 (RB20DE/RB20DET/RB25DET/RB25DE)
- Nissan Stagea WGNC34 (RB26DETT)
- Nissan Stagea WHC34 (RB20E)
- Toyota Sprinter AE86/92/101 (4A-GE/4A-GZE)
- Toyota MR2 AW11 (4A-GZELU/4A-GELU)
Availability 7-10 Days
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