NGK Racing Spark Plug - 14 mm Thread - 21.5 mm R - Gasket Seat - Stock Number 3857 - Resistor HTA23001 such as low speed pre-ignition

such as low speed pre-ignition issues

1957-1981 Chevrolet Corvette

1963-1974 Ford Ranchero

Chevrolet Mark-IV Big Block V8

NGK Racing Spark Plug - 14 mm Thread - 21.5 mm R - Gasket Seat - Stock Number 3857 - Resistor HTA23001 such as low speed pre-ignitionProduct Description: Spark Plug NGK Racing 14 mm Thread 21. 5 mm Reach Gasket Seat Stock Number 3857 Resistor Sold Individually With over 80 years of automotive expertise, we are driven by extreme dedication to performance and quality. From OEM to aftermarket, our people push the boundaries of innovation to bring the latest technologies to market under the NGK and NTK brands. Since 1936, NGK Spark Plugs has been the world leader in technology,