HKS Super Fire Racing M40 - Single HKS Super Fire Racing M40 - Single
HKS Super Fire Racing M40 - Single HKS Super Fire Racing M40 - Single
HKS Super Fire Racing M40 - Single HKS Super Fire Racing M40 - Single
HKS Super Fire Racing M40 - Single HKS Super Fire Racing M40 - Single

HKS Super Fire Racing M40 Iridium Spark Plug (NGK 8, JIS) - Single

HKS SKU: HKS50003-M40-1
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The HKS Super Fire Racing M40 is a JIS-type iridium spark plug with an NGK 8 equivalent heat range, a broad-application plug for tuned Japanese turbo and naturally aspirated engines (RB20/RB25/RB26, SR20, 1JZ/2JZ, and similar) using a JIS φ14 gasket seat. The 0.6 mm iridium center electrode and platinum-chip outer electrode lower firing voltage for strong ignition, with thermal-edge anti-fouling. Sold individually.

Specifications

Brand HKS
Product Line Super Fire Racing M-Series
Heat Range NGK 8 equivalent
Seat / Type JIS type
Thread φ14 x 19 mm
Hex (Wrench) 16 mm
Center Electrode 0.6 mm iridium
Quantity Single plug
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