Iridium Spark Plugs - 1999-2017 Twin Cam, 1986-2020 Sportster Models Mirrors Handlebars & Controls Saddlemen - ATAB Security Seat

Saddlemen - ATAB Security Seat Screw - Gold

Tunnel Height: slopes from 3-7/8" at the front to 1" at the rear

We’ve found these make tuning the carburetors properly difficult if not impossible on some setups

Drilled and tapped full depth (all the way through)

Hardware (available separately) is required for many Harley-Davidson applications and strongly recommended for all Harley-Davidson motorcycles

Iridium Spark Plugs - 1999-2017 Twin Cam, 1986-2020 Sportster Models Mirrors Handlebars & Controls Saddlemen - ATAB Security SeatIridium Spark Plugs 1999 2017 Twin Cam, 1986 2020 Sportster Models Iridium electrode is smaller than a standard electrode; requires less voltage Hotter spark and extended spark plug service life compared to conventional plugs Has the distinctive black ceramic with red lettering and gold colored corrosion protected coating on the metal shell Exceed OEM specifications for plug service life Sold as a pair NGK Reference # DCPR7EIX HD Reference # 6R12