PLUGS SOLD IN SINGLES

APPLICATION LIST HERE

HKS SUPER FIRE RACING (M SERIES) PLUG TYPE HERE

Improved ignition performance, durability and anticarbon build-up. The Ultimate sparkplug for increasing performance of tuned or stock engines. 

0.6mm Iridium Alloy Center Electrode 
Iridium Alloy Center Electrode reduces voltage requirement as well as improving ignition performance and durability. 
Outer Electrode with Platinum Chip 
The Outer Electrode incorporates a square platinum chip which improves urability, and when combined with the iridium center electrode boosts ignition performance. 
The Outer Electrode features a shortened tip design and tapered shape while 
maintaining the necessary space for proper ignition. 
Short Type Outer Electrode (Anti-Vibration) 
The outer electrode has been shortened and engineered with the ideal shape to decrease weight for resistance against vibration. This anti-vibration design improves longevity of the outer electrode. 
Thermal Edge 
After long idling or various combustion conditions carbon buildup can occur causing misfires. The Thermal Edge of the ceramic insulator will discharge to help decrease carbon deposits. 
Spark Support Gap 
Discharges will occur in the Spark Support Gap (space between the tip of insulator and the base of the outer electrode) to help prevent carbon buildup. 

Performance and Efficiency 

Increased Ignition Performance 
Decreased voltage requirement strengthens ignition performance under harsh conditions like lean mixture or high boost pressure. 

M35IL  heat range NGK7

M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load. 

Heat Range Conversion Chart 

HKS          25    30    35    40    45    50    52.5    55 
DENSO    16    20    22    24    27    31     32        34 

NGK            5    6      7      8      9    10     10.5     11

SUIT MODELS 

SUBARU FORESTER STi SG9 EJ25T 2004 on
NISSAN STAGEA M35 TURBO - 350Z
SUBARU Impreza 2007 On GH8 WRX , GRB STi 2.0 & 2.5cc , GVB STi Sedan
SUZUKI SWIFT SPORT 1.6L ZC32S 
NISSAN SKYLINE V35 VQ25DD 2001-2006
NISSAN SKYLINE V35 VQ35DE 2002-2006
NISSAN Y50 FUGA VQ25DE 2004-2007
NISSAN 350Z VQ35DE 2002-2006
MITSUBISHI COLT RALLIART 4G15 TURBO 2004-
MITSUBISHI EVO 9 4G63T (MIVEC)
SUBARU WRX STI VAB EJ20 2014-2020
SUBARU WRX S-GT GH8 2007-2011
SUBARU EXIGA 2008-2013 EJ20 (WILL NOT WORK EJ25)
SUBARU FORESTER SH5 SH9 EJ20 2008-2012
SUBARU LEGACY BL / BP EJ20T (TURBO) 2003-2009
SUBARU LEGACY BL / BP EZ30 
SUBARU LEGACY BR/BM EJ25T (TURBO ONLY)