NGK Racing Spark Plugs R7438-9 Audi RS3 8.5V

Set of 5 NGK Racing R7438-9 iridium spark plugs with heat range 9, developed for tuned 2.5-litre five-cylinder engines. Their competition technology provides excellent heat transfer and stable ignition under demanding conditions.

These direct-fit spark plugs feature Race Iridium technology and triple seals and are recommended for vehicles running Stage 2 or higher. Engineered in Japan.

The spark plug gap should be checked according to the engine setup and tuner’s requirements before installation.

Audi RS3 8P (2011–2015) – 2.5 TFSI 340 hp
Audi RS3 8V (2015–2017) – 2.5 TFSI 367 hp
Audi RS3 8.5V (2017–2021) – 2.5 TFSI 400 hp
Audi RS3 8Y (2021 onwards) – 2.5 TFSI 400 hp
Audi RSQ3 F3 (2019 onwards) – 2.5 TFSI 400 hp
Audi TT RS 8J (2006–2013) – 2.5 TFSI 340/360 hp
Audi TT RS 8S (2014–2023) – 2.5 TFSI 400 hp

Ford Focus 2 RS (2005–2011) – 305/350 hp
Ford Focus 2 ST (2005–2011) – 225 hp

Compatibility refers to vehicles with standard engine specifications. Please check your vehicle and engine setup before ordering.