Champion 859 Spark Plug

Reliable Ignition with Champion Copper Plus Spark Plug 859

The Champion Copper Plus Spark Plug 859 is engineered to deliver consistent ignition performance for small engine applications. Designed with durable nickel and copper alloy components, this spark plug supports efficient combustion and reliable starts in various vehicle models.

• Ground electrode core and center electrode tip made of nickel for durability
• Pre-set gap size of 0.025 inches for optimal spark
• Flat seat type ensuring proper sealing
• Resistor type spark plug to reduce electrical noise
• Thread diameter of 14 mm (0.551 inch) with 0.375 inch reach
• Heat range rating of 7 for balanced thermal performance
• Hex size of 19 mm (0.748 inch) for easy installation

Detailed Features and Specifications

The Champion Copper Plus 859 spark plug features a nickel copper alloy ground electrode and a nickel center electrode tip, providing a balance of conductivity and wear resistance. The spark plug comes with a non-removable nut electrical terminal type and a single ground electrode. Its pre-gap size is factory set at 0.025 inches (0.65 mm), ensuring optimal spark gap for ignition efficiency. The flat seat design helps maintain a secure fit and proper sealing in the combustion chamber. With a heat range of 7, this spark plug is suitable for a variety of small engine applications requiring moderate heat dissipation.

About the Champion Copper Plus Product Line

The Copper Plus line by Champion is designed specifically for small engines, offering reliable ignition components that combine copper core technology with durable electrode materials. This product line focuses on providing consistent spark performance and longevity, making it a practical choice for maintenance and replacement in compatible vehicles.

Applications and Common Issues Addressed

• Improves engine starting reliability in small engine vehicles
• Reduces misfires caused by worn or damaged spark plugs
• Helps maintain fuel efficiency by ensuring proper combustion
• Minimizes electrical interference with resistor design
• Prevents fouling and electrode wear in moderate heat range engines

Installation Notes and Tips

Ensure the spark plug gap is checked before installation, although the pre-gap is factory set at 0.025 inches. Use a 19 mm (0.748 inch) hex socket for installation and torque to manufacturer specifications to avoid damage. The flat seat design requires proper seating to prevent compression leaks. This spark plug is compatible with various small engine makes and models; verify fitment with your specific vehicle requirements.

Quality Assurance and Warranty

Champion manufactures the Copper Plus 859 spark plug to meet industry standards for ignition components. The use of nickel and copper alloy materials supports durability and consistent performance. While specific warranty details are not provided, Champion products typically adhere to quality control processes ensuring reliability in automotive applications.