Champion 431-1 Spark Plug

Champion Copper Plus 431-1 Spark Plug

Champion Copper Plus 431-1 is a standard replacement spark plug built for dependable ignition performance and consistent heat control. Its copper core electrode improves conductivity, while nickel center and ground electrode materials support steady wear characteristics in everyday service.

Key Features

• Copper core electrode for improved conductivity and heat management
• Nickel center electrode tip and nickel ground electrode tip
• Standard replacement grade for routine ignition service
• Resistor type spark plug with a non-removable nut terminal
• Flat seat design with washer included
• Pre-gapped to 0.035 in. / 0.90 mm
• RC14YC plug type, 14 mm thread diameter, 0.75 in. reach

Product Details

The Champion Copper Plus line focuses on practical ignition service with a copper core design that helps carry current efficiently and manage plug temperature. Part number 431-1 is built as a Champion Copper Plus Small Engine spark plug and uses a standard center electrode design with nickel materials at the firing surfaces for dependable operation. This part cross-references Anchor 3408 for the same application.

Compatible With select Saturn SC1, SL, SL1, and SW1 applications, as well as certain Chevrolet Camaro and Corvette models, this spark plug also appears in fitment for older Ford, Lincoln, Mercury, Bentley, Rolls-Royce, and Oldsmobile vehicles. For buyers searching for a Champion RC14YC replacement or Champion 431-1 spark plug for Saturn SL1, this listing provides the core specifications needed for a direct match.

Common Issues This Part Can Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent spark delivery
• Misfire symptoms related to aged ignition components
• Reduced throttle response from degraded plug performance
• Maintenance replacement for scheduled tune-up service

Installation Notes and Tips

• Verify plug type RC14YC, thread diameter, reach, and seat style before installation.
• Check and confirm the pre-gap setting against the vehicle service specification.
• Inspect ignition wires or coil-on-plug components during spark plug service.
• Use proper torque procedures for flat-seat spark plugs with a washer.
• Confirm fitment by year, make, and model before ordering, especially on Saturn SC1, SL, SL1, and SW1 applications.

Quality Assurance

Champion Copper Plus spark plugs are built to meet standard replacement service needs with a copper core electrode and nickel firing surfaces for controlled wear and stable ignition performance. Part number 431-1 is engineered for direct replacement use in listed applications, including Saturn SL and Chevrolet Camaro fitments.