Autolite AR53 Racing Spark Plug

Kart racing plug permitted where current class rules specify AR53. One step hotter than AR52. Autolite Racing plugs use a cut-back ground electrode, nickel plating, and a high-alumina ceramic insulator. Verify the engine builder's specified plug and gap before installation.

Draft catalog item. Confirm dealer cost, current availability, fitment, plug gap, and physical inventory before publication.