391-5090 – Breaker – Mercury Outboard

3915090 breaker serves as a reliable ignition breaker point for many Mercury outboard engines. This part opens and closes the ignition circuit at the right time. It ensures the engine sparks correctly for smooth starting and idle performance. It works along with the distributor and coil to deliver timed spark.

This product also corresponds with part number 8M6001250 in some applications. When you install either 3915090 breaker or 8M6001250 ignition points, your engine regains proper spark timing. You get consistent ignition performance with these genuine Mercury parts.

Worn or pitted breaker points can cause rough idling and poor starts. Installing this breaker restores accurate ignition timing and improves throttle response. It fits directly into compatible distributors without modifications.

You can use the breaker during tune-ups, engine maintenance, or restoration. Mechanics and boat owners install it when they service older mechanical ignition systems. It gives a cost-effective option to replace worn points rather than upgrade to an electronic unit.

Choose this breaker when you want OEM-spec fit and dependable operation. The part supports smooth engine running. It helps maintain spark accuracy and extends the life of related ignition components.

Shop at Arizona Outboard Dismantlers to keep your outboard running strong and ready for the water.