NGK Spark Plug R5671A9 crosses to AR3933

Crosses to AR3933 and doesn’t mess around—this is a straight-up race plug for high-compression chaos and WOT living. The NGK R5671A-9 is cold, non-resistor, short reach, and made to handle the kind of abuse that melts lesser plugs.

If your setup is spicy, this is the plug that keeps it lit without flinching. Add to cart and let the ignition party begin.

Spark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each