Champion 823-1 Spark Plug

Champion Copper Plus Spark Plug 823-1

Champion Copper Plus 823-1 is a standard replacement spark plug built for dependable ignition performance in classic Chevrolet, Buick, GMC, and Pontiac applications. Its copper core electrode improves conductivity and heat control, while the nickel center and ground electrode materials support consistent wear characteristics.

Key Features

• Copper core electrode for improved conductivity and heat management
• J-gap design with a pre-gap size of 0.030 in. (0.78 mm)
• Standard replacement grade for secondary ignition service
• Nickel center electrode tip and nickel ground electrode tip
• Flat seat design with washer included
• Non-resistor construction
• Removable nut terminal for common ignition wire connections
• Champion Copper Plus Small Engine classification

Product Details

The Champion Copper Plus line focuses on straightforward ignition service with a copper core for stable electrical transfer and heat control. Part number 823-1 uses a J-gap plug type, 14 mm thread diameter, 0.375 in. reach, and a 20.650 mm hex size, making it a practical OE-style replacement for older engines that call for a Champion J6C-style spark plug. This part cross-references 93324 and B6S for the same application.

Compatible With 1953-1957 Buick Century, 1953-1957 Buick Roadmaster, 1954 Buick Skylark, 1953-1955 Chevrolet Corvette, 1959-1960 Chevrolet Bel Air, 1964-1968 Chevrolet El Camino, 1967-1968 Chevrolet Camaro, 1967-1968 Chevrolet K10 Suburban, 1967-1968 Chevrolet K20 Suburban, 1968 Chevrolet C10 Suburban, 1968 Chevrolet C20 Suburban, 1967 GMC G15/G1500 Van, 1967 GMC G25/G2500 Van, 1960-1962 Pontiac Laurentian, and 1960-1962 Pontiac Parisienne.

Common Uses

• Restoring ignition performance in classic Chevrolet Corvette and Bel Air engines
• Replacing worn plugs that cause rough idle or misfire
• Addressing hard starting in older Buick, Pontiac, and GMC engines
• Improving spark consistency when the original plug shows electrode wear
• Servicing engines that specify a Champion J6C-style plug

Installation Notes

Verify thread diameter, reach, seat type, and heat range before installation. Check the pre-gap against the engine specification and adjust only if needed. Use the removable nut terminal with the correct ignition lead connection, and tighten to the manufacturer’s torque specification for the engine.

Quality Assurance

Champion Copper Plus spark plugs are built as standard replacement ignition components with nickel electrode materials and copper-core conductivity for dependable service in classic applications.