Denso Iridium Spark Plug — Iridium - 5367 Koso North America 9 mm diameter provides superior

9 mm diameter provides superior strength and durability

Works on all RZR plastic rivets

PC programmability allows you to define a wide-open and part-throttle curve

121 and 121VVT

Denso Iridium Spark Plug — Iridium - 5367 Koso North America 9 mm diameter provides superiorFeatures Six times harder than platinum, iridium withstands temperatures up to 4,000F Because the iridium electrodes of these plugs can be shrunk to only 0. 4mm, voltage requirements decrease while firing performance improves 360 laser welding of electrode provides a seal that resists wear even in the worst conditions Ground electrode features a tapered cut and U groove that form a large volume area for the flame's center Specs Thread Reach 19. 1 mm