NGK Iridium IX spark plugs feature an ultra-fine center electrode that's designed just thick enough to ensure the maximum durability and life of the spark plugs—and just thin enough to create an accurate and consistent spark. They represent the ultimate evolution of spark plug technology and performance. Iridium is the hardest metal used in spark plugs today—six times harder than platinum. This allowed NGK engineers to reduce the voltage requirement for a spark. Iridium IX plugs are available in more than a hundred configurations for universal and vehicle-specific applications.

More From This Category

COMP Cams Rocker Arm, Ultra Pro Magnum, Full Roller, Chromoly Steel, 1.6 Ratio, For Chevrolet V6 and SBC 3/8 in. Stud, Each

COMP Cams Rocker Arm, Ultra Pro Magnum, Full Roller, Chromoly Steel, 1.6 Ratio, For Chevrolet V6 and SBC 3/8 in. Stud, Each

$65.07

6Boost Exhaust Manifold, Izusu G180, T3/Nil 'Open Entry' to suit IWG

6Boost Exhaust Manifold, Izusu G180, T3/Nil 'Open Entry' to suit IWG

$1,100.00

QA1 Front Sway Bar, 71-76 GM B-Body

QA1 Front Sway Bar, 71-76 GM B-Body

$808.58

Whiteline Front Control Arm, Upper Inner, Rear Bushing, 46.6mm and 45.6mm OD, 28mm ID, Toyota, Kit

Whiteline Front Control Arm, Upper Inner, Rear Bushing, 46.6mm and 45.6mm OD, 28mm ID, Toyota, Kit

$117.96

Dakota Digital Gauge, MDX System, 1955-56 Chevy Car, Black Alloy Style Face, Blue Display, Custom

Dakota Digital Gauge, MDX System, 1955-56 Chevy Car, Black Alloy Style Face, Blue Display, Custom

$1,968.40