HKS 50003-M45IL Super Fire Racing Spark Plug #9 - Subaru EJ257 / VAG 2.0-4.0 TFSI / KIA 3.3 / Nissan TB48 - 1 Piece

HKS 50003-M45IL Super Fire Racing Spark Plug #9 – Subaru EJ257 / VAG 2.0–4.0 TFSI / KIA 3.3 / Nissan TB48

The HKS Super Fire Racing M45IL plug is an iridium‑tipped racing ignition plug developed for high‑performance and turbocharged engines, with a cold #9 heat range and high heat resistance. It produces a stable spark under high boost pressure, increasing performance and safety.

✅ #9 heat range: ideal for high boost and temperature

✅ Long (IL) type: suitable for deep plug wells

✅ Fine iridium tip: stronger spark and faster ignition

✅ Safe for high‑compression and tuned engines

✅ Stable combustion and less misfire at high RPM

With resistance to high heat and pressure, the HKS M45IL plug is suitable for both track and street use. It helps prevent plug failures in modified engines, ensuring safe driving.

Compatible Engines and Vehicles

- Subaru WRX STI EJ257

- Audi / VW 2.0 TFSI, 2.5 TFSI, 3.0–4.0 TFSI (EA888 / EA839)

- Kia Stinger / Genesis G70 3.3 T-GDI

- Nissan Patrol TB48 (turbo or high‑performance configurations)

Installation

It has the same dimensions as the OEM plug, so it can be installed directly. Use a torque wrench and tighten to the manufacturer’s values. Make sure ECU settings are compatible with the heat range.

Note

This plug has a #9 heat range, suitable only for engines running high boost and temperatures. Not recommended for stock engines or low heat applications. Verify engine code and plug size before ordering.