Spark Plugs

Denso #5305 - Iridium Spark Plug - IW16

Iridium Spark Plug - IW16FeaturesSix times harder than platinum, iridium withstands temperatures up to 4,000°FBecause the iridium electrodes of these plugs can be shrunk to only 0.4mm, voltage requirements decrease while firing performance improves360°...

Denso #5306 - Iridium Spark Plug - IW20

Iridium Spark Plug - IW20FeaturesSix times harder than platinum, iridium withstands temperatures up to 4,000°FBecause the iridium electrodes of these plugs can be shrunk to only 0.4mm, voltage requirements decrease while firing performance improves360°...

Denso #5307 - Iridium Spark Plug - IW22

Iridium Spark Plug - IW22FeaturesSix times harder than platinum, iridium withstands temperatures up to 4,000°FBecause the iridium electrodes of these plugs can be shrunk to only 0.4mm, voltage requirements decrease while firing performance improves360°...

Drag Specialties - Iridium Spark Plugs - M8/XG

Iridium Spark Plugs - M8/XGFeaturesIridium electrode is smaller than a standard electrode; requires less voltageHotter spark and extended spark plug service life compared to conventional plugsHas the distinctive black ceramic with red lettering and...

Drag Specialties - Iridium Spark Plugs - TC/XL

Iridium Spark Plugs - TC/XLFeaturesIridium electrode is smaller than a standard electrode; requires less voltageHotter spark and extended spark plug service life compared to conventional plugsHas the distinctive black ceramic with red lettering and...

Drag Specialties - Spark Plug - R Max

Spark Plug - R MaxFeaturesPlugs have a unique look with a black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulationMulti-rib design of the insulator eliminates...

Drag Specialties - Spark Plugs - '02-'17 V-Rod

Spark Plugs - '02-'17 V-RodFeaturesPlugs have a unique look with a black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulationMulti-rib design of the insulator...

Drag Specialties - Spark Plugs - '48-'74 Big Twin

Spark Plugs - '48-'74 Big TwinFeaturesPlugs have a unique look with their black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina; features strong resistance to heat shock and superior insulationMulti-rib design of insulator...

Drag Specialties - Spark Plugs - '57-'78 XL

Spark Plugs - '57-'78 XLFeaturesPlugs have a unique look with their black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina; features strong resistance to heat shock and superior insulationMulti-rib design of insulator eliminates...

Drag Specialties - Spark Plugs - '71-'85 XL

Spark Plugs - '71-'85 XLFeaturesPlugs have a unique look with their black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina; features strong resistance to heat shock and superior insulationMulti-rib design of insulator eliminates...

Drag Specialties - Spark Plugs - '75-'99 Big Twin

Spark Plugs - '75-'99 Big TwinFeaturesPlugs have a unique look with a black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulationMulti-rib design of the insulator...

Drag Specialties - Spark Plugs - '75-'99 Big Twin

Spark Plugs - '75-'99 Big TwinFeaturesPlugs have a unique look with a black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulationMulti-rib design of the insulator...

Drag Specialties - Spark Plugs - '75-'99 Big Twin

Spark Plugs - '75-'99 Big TwinFeaturesPlugs have a unique look with a black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulationMulti-rib design of the insulator...

Drag Specialties - Spark Plugs - '79-'85 XL

Spark Plugs - '79-'85 XLFeaturesPlugs have a unique look with their black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina; features strong resistance to heat shock and superior insulationMulti-rib design of insulator eliminates...

Drag Specialties - Spark Plugs - '99-'22 Twin Cam/XL

Spark Plugs - '99-'22 Twin Cam/XLFeaturesPlugs have a unique look with a black ceramic body and bold red logo/scriptInsulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulationMulti-rib design of the insulator...