NGK BKR9EIX Iridium Spark Plugs Renault Clio Williams 2.0 16S

Set of 4 NGK BKR9EIX iridium spark plugs with heat range 9, three grades colder than standard plugs. Designed for high-power and heavily modified engines operating under demanding conditions and intensive track use.

Heat range: 9 – three grades colder than standard
Thread: M14 x 1.25
Thread length: 19 mm
Hex size: 16 mm
Quantity: 4 spark plugs
Made in Japan

Use colder spark plugs only when required by the engine setup. Not recommended for engines running on E85 fuel.