HKS Super Fire Racing Spark Plug 50003-M40HL

Type HL Type

Thread Size φ12×26.5mm

Wrench Size 14mm

Heat Range NGK #8

Product SUPER FIRE RACING M40HL

NOTE PRICED PER SPARK PLUG

RECCOMENDED APPLICATIONS

Toyota GR Yaris GXPA16 G16E-GTS 20+ (STOCK OEM or SIMILAR Heat)

Toyota GR Corolla GZEA14H G16E-GTS 22+ (STOCK OEM or SIMILAR Heat)

Nissan GT-R R35 VR38DETT 07+ (STOCK OEM or SIMILAR Heat)

Nissan Fairlady Z RZ34 VR30DDTT 22+ (STOCK OEM or SIMILAR Heat)

Nissan Fairlady Z 370Z Z34 VQ37VHR 08-22 (STOCK OEM or SIMILAR Heat)

Subaru WRX S4 VAG FA20 Turbo 14-21 (STOCK OEM or SIMILAR Heat)

Subaru Forester SJG FA20 Turbo 12-18 (STOCK OEM or SIMILAR Heat)

Subaru Levorg VM4 FB16E Turbo 14-20 (STOCK OEM or SIMILAR Heat)

Subaru Levorg VMG FA20E Turbo 14-20 (STOCK OEM or SIMILAR Heat)

Subaru Legacy B4 BMG FA20E 12-14 (STOCK OEM or SIMILAR Heat)

Subaru Legacy Touring Wagon BRG FA20E 12-14 (STOCK OEM or SIMILAR Heat)

Toyota GT86 FA20 12-21 (One Step Warmer)

Toyota GR86 FA24 21+ (One Step Warmer)

Subaru BRZ FA20 12-21 (One Step Warmer)

Subaru BRZ FA24 21+ (One Step Warmer) 

SUPER FIRE RACING

SUPER FIRE RACING M Series

Ultimate spark plug "M".

Ignitionability, durability, anti-insulation are all reinforced. HKS has made the best plug for both tuning engines and stock engines.

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.

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.

Special Design RE-type for Rotary Engines

Rotary engines reciprocating design have a different mechanism and combustion condition. RE-type spark plugs are specially designed to meet the different requirement for rotary engines. The straight shape platinum outer electrode enables reliable ignition performance.

VIP Motorsport is an official stockist of HKS Exhausts & Products in the UK & Europe. Contact us for a lead time. Generic image may be used – part received may differ!