Description

Spark Plug # 415/RN9YC | Champion 415

Spark Plug # 415/RN9YC | Champion 415

Keep your outboard motor and small engine running at peak performance with these premium copper spark plugs. Built as OEM replacements, they deliver the reliable ignition your equipment demands for consistent, dependable operation day after day.

• Champion Copper Plus premium spark plug
• Replaces the following OEM part numbers: Chrysler 2098379K; Westerbeke 35666 and 38568; NGK BPR6ES and BPR6EFS; Mercury 33-8134711 and 33-816336Q; Volvo 3851868; Autolite 4263; Torch F6RTC; Champion FF-22 and E3.22
• Standard nickel center electrode
• Met ISO and SAE manufacturing standards
• Thread Size: 0.551 inches (14mm)
• Reach: 0.75 inches (19mm)
• Hex Size: 0.813 inches (20.65mm)
• Gap: 0.032 inches (0.82 mm)
• Resistor: Yes (5k ohm)
• Flat gasket seal
• Manufacturer’s warranty: two years or recommended change interval

Additional Information

The Champion RN9YC Copper Plus represents decades of proven engineering excellence across marine, powersports, and small engine applications. Its nickel-copper alloy center electrode and optimized ground electrode geometry deliver superior thermal management and conductivity, enabling reliable performance across extended operating ranges. The integrated ceramic resistor effectively suppresses EMI in modern electronics-equipped vessels. Specified as original equipment by Volvo Penta, MerCruiser, OMC, Westerbeke, and Gray Marine, this plug combines anti-fouling properties with corrosion resistance for consistent ignition and stable idle characteristics. A precision-engineered solution for demanding marine environments.