HKS Super Fire Racing M40G Iridium Spark Plug (NGK 8, 20.8mm Hex) - Single

The HKS Super Fire Racing M40G is a G-type iridium spark plug with an NGK 8 equivalent heat range and the larger 20.8 mm hex required by certain engines, for tuned and stock applications. The 0.6 mm iridium center electrode and platinum-chip outer electrode deliver strong ignition and durability under load and boost, with thermal-edge anti-fouling. Sold individually.

Specifications