HKS GR Corolla M-Series Spark Plug (Stock Heat)

Price is PER Plug, 3 required for full replacement

on G16E-GTS

Overview

The HKS Super Fire Racing M‑Series spark plug is a high‑performance iridium spark plug designed for tuned or high‑load engines, offering improved durability and ignition performance over many stock plugs.

Key Features & Specs

• 0.6 mm Iridium Alloy Center Electrode — strong, efficient spark delivery with lower voltage requirement and excellent durability under stress.

• Platinum Chip Outer Electrode — longer wear life and consistent gap maintenance even under aggressive conditions.

Advanced Ignition Enhancements

• Short‑Type Outer Electrode (Anti‑Vibration) — reduced moving mass resists vibration and electrode wear at high RPMs.

• Thermal Edge Ceramic Insulator — helps shed carbon deposits that can misfire or foul plugs during varying operating conditions.

• Spark Support Gap — micro‑gap design around the insulator tip that helps keep combustion reliable and clean.

Technical Specifications