Get dependable ignition performance from proven copper-core technology with the Champion Copper Plus Spark Plug 300 (plug type N9YC), a standard-replacement plug built to meet OE fit, form and function. It fits many vehicles, among them the 1973-1979 Honda Civic (L4-1.2L), 1961-1966 Chevrolet Impala and 1981-1992 Volkswagen Jetta. See the Buyer's Guide tab for the full list of vehicles and engines.
The copper core center electrode offers excellent conductivity and helps control heat for a consistent spark. The coated shell guards against corrosion.
- Copper core precision: The copper core center electrode allows accurate control of heat range, for longer life and dependable performance.
- Corrosion resistance: The coated shell resists corrosion in harsh environments.
- Easy to install: It comes pre-gapped at 0.032 in (0.82 mm), which simplifies installation.
- Dependable starts: It is designed for reliable ignition in all weather conditions.
Specifications: 14 mm thread diameter, flat seat, crush washer included, non-resistor design, not indexed. The number of plugs needed varies by engine: the listed Honda Civic engines use 4 and the Impala V8s use 8. The minimum order quantity is 4. Country of origin: China.
Hard starting, misfires, a rough idle or reduced fuel economy can be signs that spark plugs may need replacing. Other ignition or fuel problems can cause the same symptoms, so diagnose first. If worn plugs are the cause, the Copper Plus 300 replaces them.
