Champion UL18V Spark Plug, Stock No. 824

Champion UL18V, stock number 824. A copper core center electrode carries heat away from the firing tip, which is what keeps a plug in its heat range on an outboard that spends the afternoon at wide open throttle instead of idling around a lake. Corrosion resistant construction so it backs out cleanly at the next service.

• Champion part UL18V, stock number 824
• Copper core center electrode for heat control
• Resists fouling under heavy engine loads
• Listed for Force 50, 85, 90, 120, 125 and 150 HP applications, including Prestolite ignition models
• OE type marine replacement

Confirm the plug against your engine manual before ordering, and replace them as a set. One tired plug in a bank makes a running problem that looks like fuel.