Champion 512 Spark Plug

Champion Copper Plus 512 Spark Plug

Champion Copper Plus 512 is a spark plug built for dependable ignition performance in small engine and secondary ignition applications. Its copper core electrode improves conductivity and heat control, while nickel construction at the center and ground electrodes supports consistent wear characteristics.

Key Features

• Copper core electrode for improved conductivity and heat management
• Nickel center electrode tip and nickel ground electrode core material
• Pre-gapped to 0.030 inch for straightforward setup
• Flat seat design with a 0.438 inch reach
• 14 mm thread diameter, 0.813 inch hex size, and non-removable nut terminal
• Non-resistor design for applications that call for this plug type
• Champion Copper Plus small engine classification

Product Details

The Champion Copper Plus line focuses on practical ignition performance with a copper core that helps transfer heat efficiently and maintain stable operation under load. Part number 512 uses a nickel center electrode tip, nickel copper alloy ground electrode material, and a single ground electrode layout to support reliable spark delivery in the correct application. This spark plug is identified as plug type H12 and is built with a flat seat, 14 mm thread diameter, and 0.438 inch reach. For buyers searching Champion 512 spark plug, Champion Copper Plus 512, or a replacement spark plug for small engine ignition service, this part provides a direct-spec option. Cross-reference part numbers include Carlson H12 and Champion Spark Plug 218 for the same application.

Common Issues It Can Help Address

• Hard starting caused by worn or fouled spark plugs
• Weak ignition performance from excessive electrode wear
• Misfire concerns related to incorrect plug gap or heat control
• Rough running in small engine ignition systems
• Loss of spark consistency in service intervals that call for this plug specification

Installation Notes and Tips

Verify the plug type, thread diameter, reach, seat style, and terminal style before installation. The pre-gap is listed at 0.030 inch, but the final gap should always be checked against the engine specification before use. Confirm that the application calls for a non-resistor spark plug and a 0.813 inch hex size. For fitment-based searches, this Champion 512 spark plug is the type of part used when a vehicle or equipment listing specifies Champion 512 or H12. Fits 2006-2011 Honda Civic, front right is not listed in the provided fitment data, so application must be confirmed by specification rather than assumed.

Quality Assurance

Champion is a long-established ignition brand, and the Copper Plus line is built around a copper core design for conductivity and heat control. Part number 512 is manufactured to the listed dimensions and electrode materials for specification-matched replacement use.