Keep a dependable spark firing with the Champion Copper Plus Spark Plug 123 (plug type RN5C), a copper-core, resistor-type plug from Champion's Copper Plus Small Engine line. It fits many vehicles, among them the 1976-1978 Honda Accord (L4-1.6L), 1975-1979 Honda Civic (L4-1.5L) and 1963-1966 Chevrolet Suburban (L6-4.8L). See the "Vehicles it fits" section for the full list.
Champion Copper Plus plugs use proven copper-core technology for dependable ignition. The copper core center electrode provides excellent conductivity and optimized heat control for consistent sparks, and the coated shell protects against corrosion. The plug is designed for reliable ignition in all weather conditions.
- Copper core precision: The copper core center electrode allows accurate control of heat range and is designed for longer life and dependable performance.
- Corrosion resistance: The coated shell resists corrosion in harsh environments.
- Built-in noise suppression: The resistor design minimizes electrical interference to help protect sensitive electronics.
- Easy install, OE-quality fit: The plug comes pre-gapped at 0.025 in (0.64 mm) and is built to meet OE fit, form and function.
Specifications: 14 mm thread diameter, flat seat, non-indexed, resistor type, copper center electrode tip and standard replacement grade. A crush washer is included. Country of origin: China.
The number of plugs required varies by engine. Check the quantity listed for your application in the "Vehicles it fits" section.
Frequently Asked Questions
I usually look for NGK spark plugs for my 1976-1978 Honda Accord 1.6L. Will this Champion 123 fit?
The Champion 123 is listed for the 1976-1978 Honda Accord with the L4-1.6L engine and the 1981 Honda Accord with the L4-1.8L. Check the "Vehicles it fits" section to confirm your engine.
What does the copper core do?
The copper core center electrode provides excellent conductivity and allows accurate control of heat range. It is designed for consistent sparks and dependable performance.
Is the Champion 123 pre-gapped?
Yes. It comes pre-gapped at 0.025 in (0.64 mm) to simplify installation. Confirm the gap against your vehicle's service information before you install it.
What are the key specs, and is a washer included?
It is a resistor-type RN5C plug with a 14 mm thread diameter and a flat seat. A crush washer is included.
What are signs a spark plug may need replacing?
Common signs are hard starting, misfiring, rough idle and reduced fuel economy. These symptoms can have other causes, so diagnose the ignition system before replacing plugs.
