NGK R0373A-10 - Stock No. 4940 - Racing Spark Plug

NGK Iridium Racing Spark Plugs

NGK Racing Series plugs are engineered to withstand the harshest engine conditions. Fine wire iridium tipped center electrode and platinum tipped ground electrode improve ignitability, increase durability and enhance anti fouling capabilities. Special insulator nose configurations improve throttle response. 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 iridium spark plugs currently represent the highest-quality technological solution. They feature an iridium-alloy on the middle electrode welded on in a special process using laser. One of the worlds hardest metals, the precious metal iridium starts melting at a temperature of 2450°c and is therefore very resistant to spark erosion. By using it, the service life is doubled on average in comparison to standard nickel spark plugs.

The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX ideal for the performance enthusiast. Iridiums extremely high melting point is perfectly suited to todays high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.

• Fine iridium tip ensures high durability and a consistently stable spark
• Trivalent metal plating for superior anti-corrosion and anti-seizing properties
• Outstanding acceleration, high fuel efficiency and durability

NGK are the worlds number 1 motorcycle OEM fitted spark plug

From passenger cars and bikes to Formula 1 and motorcycle racing, NGK Spark Plugs has established itself as a heavily relied upon original equipment manufacturer (OEM). With its clear commitment to delivering the highest quality and continuously raising the bar, NGK Spark Plugs is the obvious brand of choice for a wide range of vehicle manufacturers.

Fitment Summary
Compatible with 103 models (yearly).

• Indian: FTR 1200 Rally, FTR 1200S, FTR 1200 Sport, Scout 1130 Bobber, Scout 1130 Icon, Scout 1130 Rogue, Scout 1130 Sixty
• Polaris: Ace 500EFi, Ace 500 SOHC, Ace 570Efi, Ace 900 Efi EPS, Ace 900 SP EPS, General 1000, Ranger 1000EPS, Ranger 1000 Forest, Ranger 1000 XP EPS, Ranger 325ETX, Ranger 925 XP4 Turbo, RZR 1000S, RZR 925 Pro R, RZR 925 Pro XP, RZR 925 XP Turbo, RZR Turbo4 1000S, RZR Turbo4 1000 S XP EPS, Scrambler 1000 HO EPS XP, Scrambler 1000 HO XP EPS, Scrambler 1000 XP S EPS, Sportsman 1000 Falcon, Sportsman 1000XP, Sportsman 450HO, TR 570, Xpedition 3254x4
• Yamaha: YZF 750 R7 5FL