Champion 977 Copper Plus Resistor Spark Plug 14mm

The Champion 977 Copper Plus spark plug delivers reliable ignition performance with advanced engineering designed for optimal engine operation. This resistor-type spark plug features a copper core center electrode that provides precise heat range control, ensuring consistent performance and extended service life across a wide range of operating conditions.

Key Features:

• Copper core center electrode for accurate heat range control and improved performance
• Patented SAC-9 semi-conductor resistor provides maximum suppression of electromagnetic interference (EMI) and radio frequency interference (RFI)
• Patented Ultraseal coated shell prevents rust and corrosion for reliable long-term operation
• 14mm thread diameter for broad vehicle compatibility
• Resistor design protects sensitive electronic components and reduces radio static

Champion Copper Plus spark plugs are engineered to meet or exceed OEM specifications, making them an excellent choice for replacement applications across automotive, marine, small engine, and powersports equipment.