Help keep your engine firing consistently with the Champion Copper Plus Spark Plug 18 (plug type RV15YC4), built around a copper-core center electrode for dependable ignition. It fits many vehicles, among them the 1975-1996 Ford F-150 5.0L / 5.8L / 7.5L, 1975-1997 Ford F-250 5.0L / 5.8L / 7.5L and 1987-1993 Ford Mustang 5.0L. See the Buyer's Guide tab for the full list of vehicles and engines.
- Copper core precision: The copper-core center electrode allows accurate control of heat range. It is designed for longer life and dependable performance.
- Corrosion resistance: A coated shell helps resist corrosion in harsh environments.
- Built-in noise suppression: A resistor design helps minimize electrical interference that can affect sensitive electronics.
- Easy to install: It arrives pre-gapped to simplify installation.
Champion builds this Copper Plus plug to meet OE fit, form and function, and designs it for dependable ignition in all weather conditions. If worn plugs are the cause of misfires, hard starts or a rough idle, this standard-replacement plug replaces them.
Specifications: 14 mm thread diameter, tapered seat, resistor type, pre-gapped at 0.045 in, no washer included. The number of plugs varies by engine, from four to eight on the listed applications. Country of origin: China.
