Champion 823 Spark Plug

Reliable Ignition Performance for Classic GM Vehicles

The Champion Copper Plus 823 spark plug is engineered to deliver consistent ignition performance for a range of Buick, Chevrolet, and Pontiac models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and reliable engine operation.

• Ground electrode tip design: J gap for optimized spark exposure
• Nickel center electrode and ground electrode core for durability
• Removable nut electrical terminal type for easy installation
• Pre-gap size of 0.030 inches (0.78 mm) for precise spark gap
• Flat seat type with 0.375 inch reach and 14 mm thread diameter
• Heat range 6 suitable for small engine applications
• No resistor type for direct ignition systems
• Hex size 13/16 inch (0.813 inch) for standard wrench compatibility

About the Champion Copper Plus Spark Plug Line

The Copper Plus line from Champion is designed to provide reliable ignition with copper core electrodes that enhance conductivity and heat dissipation. This line is tailored for small engine applications, offering a balance of durability and performance. The 823 spark plug benefits from this technology, making it suitable for classic GM vehicles requiring consistent ignition under varied operating conditions.

Technical Details and Specifications

The Champion Copper Plus 823 spark plug features a nickel center electrode and a nickel copper alloy ground electrode, both contributing to long service life and stable spark generation. The J gap ground electrode tip design improves spark exposure to the air-fuel mixture, promoting efficient combustion. With a flat seat and a thread diameter of 14 mm, this plug fits securely in compatible engines. The heat range 6 classification ensures proper thermal management for the specified Buick, Chevrolet, and Pontiac models.

Compatible Vehicles and Applications

• Buick models including Century, Skylark, and Roadmaster
• Chevrolet models such as Bel Air, Camaro, El Camino, and C10/C20/K10/K20 Suburban
• Pontiac models including Laurentian and Parisienne

This spark plug is designed for secondary ignition systems in these vehicles, supporting smooth engine starts and steady operation.

Common Issues Addressed by Champion Copper Plus 823

• Misfiring or inconsistent engine ignition
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting classic Buick, Chevrolet, or Pontiac engines
• Engine rough idling or hesitation under load
• Wear-related spark plug degradation in older vehicles

Installation Notes and Tips

Before installation, verify the pre-gap size of 0.030 inches (0.78 mm) to ensure optimal spark performance. Use a 13/16 inch wrench to tighten the spark plug securely without over-torquing. The removable nut electrical terminal allows for flexible connection options. Always install spark plugs when the engine is cool to prevent thread damage. Confirm compatibility with your specific vehicle model and engine type prior to installation.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet OEM specifications for fit and function. The use of nickel and copper alloy materials supports durability and consistent performance. While specific warranty details may vary, Champion products typically come with a limited warranty against manufacturing defects. Refer to product documentation for exact warranty terms.