HKS M-Series Super Fire Racing Spark Plug Heat Range 9 AMS Crew cab specific design –

Crew cab specific design – Engineered for rear door openings on 1500 models

PRODUCTION DATE VERIFICATION: Please verify your vehicle's production date before ordering to ensure proper fitment

Sold as a set of 4

border-color: #e0e0e0

and convenience for your 15-21 Subaru WRX

HKS M-Series Super Fire Racing Spark Plug Heat Range 9 AMS Crew cab specific design –Specifications 0. 6mm Iridium Alloy Center ElectrodeIridium Alloy Center Electrode reduces voltage requirement as well as improving ignition performance and durability. Outer Electrode with Platinum ChipThe Outer Electrode incorporates a square platinum chip which improves urability, and when combined with the iridium center electrode boosts ignition performance. The Outer Electrode features a shortened tip design and tapered shape while maintaining