Description

– NGK SIMR8A9 — Iridium IX fine-wire performance spark plug
– 0.6 mm iridium fine-wire centre electrode for sharper, more consistent spark
– NGK part number SIMR8A9
– Heat range 8 — match to the OEM-specified heat range for the engine

Always confirm the NGK reference matches the plug specified in the owner’s manual or service manual before fitting. NGK Iridium IX plugs upgrade a standard plug to a fine-wire iridium centre electrode that fires more reliably across a wider operating range. A common upgrade for sport and performance applications and any engine where the extra cost is justified by the longer service life.