Description
NGK Racing Series spark plugs are engineered to withstand the extreme demands of high-performance engines. The R6254E-105 (NGK #3949) delivers durable, consistent ignition under heat, vibration, and high RPM, making it a trusted choice across racing disciplines.
- Racing-focused construction for durability and reliable ignition
- Resistor design to help reduce radio-frequency interference
- Pre-gapped at approximately 1.05 mm (-105 specification)
- Quality and performance trusted by racers worldwide
- Sold individually; verify size/heat range for your application
Part number: 3949 – Model: R6254E-105.









Reviews
There are no reviews yet.