HKS Super Fire Racing Spark Plug

2022–2023 Subaru BRZ / Toyota GR86

50003-M50HL

Overview:

The HKS Super Fire Racing Spark Plug M50HL is engineered specifically for the 2022–2023 Subaru BRZ and Toyota GR86 models, delivering enhanced ignition performance and durability. Designed for enthusiasts who demand reliable spark under aggressive driving conditions, this spark plug supports improved combustion efficiency and consistent engine response. Whether you’re tuning for track use or spirited street driving, the HKS Super Fire Racing Spark Plug helps maintain stable ignition even in challenging environments.

With advanced materials and innovative design features, this spark plug reduces misfires and carbon buildup, ensuring your engine runs smoothly and efficiently. Sold individually, it’s an ideal upgrade for those seeking superior ignition reliability and longevity.

Key Features:

The HKS Super Fire Racing Spark Plug incorporates cutting-edge technology to optimize ignition and durability. Key features include:

• 0.6mm Iridium Alloy Center Electrode: Reduces voltage requirements and enhances ignition performance while providing excellent durability under high-stress conditions.
• Outer Electrode with Platinum Chip: Features a square platinum chip that improves electrode longevity and, combined with the iridium center, boosts ignition efficiency.
• Short Type Outer Electrode (Anti-Vibration): The shortened and tapered outer electrode design reduces weight and resists vibration, extending spark plug life.
• Thermal Edge Ceramic Insulator: Helps discharge carbon deposits that accumulate during long idling or varied combustion conditions, reducing misfires.
• Spark Support Gap: A specialized gap between the insulator tip and outer electrode base that promotes discharge to prevent carbon buildup and maintain consistent spark quality.
• Improved Durability: Constructed with new materials and design enhancements to withstand continuous high load and aggressive tuning scenarios.
• Enhanced Ignition Performance: Optimized for harsh conditions such as lean air-fuel mixtures and high boost pressures, ensuring reliable combustion.

Construction & Design:

The HKS Super Fire Racing Spark Plug combines premium materials and precision engineering to deliver superior performance. The iridium alloy center electrode is exceptionally fine at 0.6mm, lowering voltage demand and improving spark intensity. The outer electrode’s platinum chip and shortened tip design reduce wear and vibration effects, while maintaining the ideal gap for efficient ignition.

The ceramic insulator’s thermal edge technology actively reduces carbon deposits, a common cause of misfires during extended idling or variable combustion conditions. This thoughtful design ensures consistent spark delivery and longer service intervals, even under demanding driving or tuning conditions.

Installation & Fitment:

This spark plug is a direct fit replacement for the 2022–2023 Subaru BRZ and Toyota GR86 models, requiring no modifications. It installs using standard spark plug tools and fits OEM mounting points precisely. Proper heat range selection is important to avoid damage, especially under aggressive tuning or continuous high load driving.

• Direct bolt-in fitment for 2022–2023 BRZ and GR86
• No cutting, drilling, or special tuning required
• Sold individually for flexible replacement needs

What’s Included

• One HKS Super Fire Racing Spark Plug M50HL

Ideal For:

This spark plug is ideal for performance enthusiasts and daily drivers who want improved ignition reliability and durability. It is especially suited for:

• Track and circuit driving with continuous high load
• Aggressive tuning and high boost applications
• Drivers seeking reduced misfires and better throttle response
• Owners wanting longer spark plug service intervals under varied combustion conditions