Champion QL86C Marine Spark Plug
- Brand:
- Champion
- Part no:
- QL86C
Where to buy
View on Amazonpaid link
The Champion QL86C is a marine spark plug with a copper core electrode for conductivity and heat control. It is designed to resist overheating when the engine is under heavy load, and it is cross-referenced to Champion 933M. The application list shows small four-stroke outboards, with the F2.5 single at 2.5 HP and the F9.9 twin at 9.9 HP among them.
Our take
The application list for the QL86C runs from the 2.5 HP F2.5 single up to the 9.9 HP F9.9 twin, all four-strokes, so it is a small-engine plug. Check your engine against the F2.5, F8 and F9.9 entries before relying on it.