NGK Iridium IX Spark Plug for Polaris 400, 450, 500, 550 RZR 4 1000 and our rebuild kits give

and our rebuild kits give you all the seals and bearings you need

Fills gaps on flange surfaces and seals joints with tough elastic film

That means they’re the quietest and most durable portals you can get

To build the TORQ Locker

If you don't need the extra protection

NGK Iridium IX Spark Plug for Polaris 400, 450, 500, 550 RZR 4 1000 and our rebuild kits giveTrivalent metal plating provides superior anti corrosion and anti seizing properties Corrugated ribs prevent flashover Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer Copper core aids in heat removal Triple seals prevent leakage NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium