Champion 8431 CJ8 Copper Plus Small Engine Spark Plug

The Champion 8431 Copper Plus spark plug is designed specifically for small engines, delivering reliable ignition performance for lawn mowers, trimmers, chainsaws, and other outdoor power equipment. This non-resistor plug features a durable copper nickel alloy construction that provides excellent heat dissipation and electrical conductivity for consistent starts and smooth engine operation.

Key Specifications:

• Replaces CJ8 spark plug applications
• Non-resistor design for small engine applications
• Copper nickel alloy electrode for superior conductivity
• 0.375 inch (3/8") thread reach
• Gasket seat type for secure sealing
• Pre-gapped to 0.030 inch (adjustable range 0.027-0.033 inch)
• Single ground electrode configuration

Champion's Copper Plus technology ensures reliable performance in demanding small engine applications. The gasket seat design provides a tight seal to prevent compression loss, while the precise gap specification ensures optimal spark energy for efficient combustion. Sold individually, with 8 plugs per retail box.