HKS SUPER FIRE RACING SPARK PLUGM40HL

Item Sold Individually*

Brand: HKS
Product: Super Fire Racing Spark Plug M-HL Series Heat Range 8
Part Num: 50003-M40HL

SPECIFICATIONS:
Plug Type: HL
Thread Size: 12 mm
Thread Reach: 26.5 mm
Hex Size: 14 mm

Equivalent Plugs:
NGK: R2558A-8 (R2558E-8)
NISMO: 22401-RN080-08

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.

Description

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.

Features

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.

Warning

Using these spark plugs on a vehicle incompatible with this type of spark plugs may lead to serious engine damage. When replacing sparkplugs, be sure to compare the shape of a new plug with the installed one. Please select an appropriate spark plug for your vehicle.

HKS provides a complete database for other model vehicles also suitable not listed above please confirm which plug you need before purchasing by clicking below.

Plug Series Search

Please note that KYP is not responsible if plugs are purchased incorrectly using the HKS part finder, returns/exchanges will not be accepted if wrong plugs are purchased.

Vehicle Compatibility:

- Nissan GTR R35 (VR38DETT)

- Nissan Skyline V35 (VQ35HR)

- Nissan Skyline V36 (VQ25HR & VQ37HR)

- Nissan 370Z Z34 (VQ37HR)

- Subaru BRZ ZC6 (FA20)

- Subaru WRX VAG (FA20 Turbo)

- Subaru Imprezza GK6/GK7 (FB20C)

- Toyota 86 ZN6 (FA20)

- Toyota Yaris GR G16E-GTS

- Mazda 3 BP (P5-VPS & PE-VPS)

- Mazda 6 GJ (PE-VPR / PY-RPR / PY-VPTS)

- Mazda MX5 ND (Pe-VPR / P5-VP SKYACTIV / P5-VPR SKYACTIV)

- Honda Odyssey RC1/2 (K24W)