339-7452A19 339-7452A1 Switch Box CDI for Mercury Mariner | JLM Marine family-yamaha-25elrs or unusual noises from the

or unusual noises from the pump can indicate a failing impeller that needs inspecting or replacement

especially when operating in environments with questionable fuel quality

which can trigger an audible alarm or cause the engine to enter a power-reduction mode

46-96148A8

339-7452A19 339-7452A1 Switch Box CDI for Mercury Mariner | JLM Marine family-yamaha-25elrs or unusual noises from theSwitch Box CDI for Mercury Mariner Fits 6 35 HP 2 Stroke Outboards This aftermarket CDI switch box is designed for Mercury Mariner 2 stroke outboard engines ranging from 6 HP to 35 HP. It provides reliable ignition control for two cylinder models from 1980 to 1997 and newer 6 25 HP models from 1999 onward, ensuring consistent spark delivery and engine performance across a wide range of applications. This unit directly replaces multiple Mercury