Sierra RPM Limiter for Mercury Marine Engines Ignition Repair Parts

The Sierra RPM Limiter (also called a rev limiter or RPM limiter module) is a replacement ignition component for Mercury and Mariner outboard engines. It limits engine speed to a preset RPM. This helps protect the powerhead from over-revving, for example when a prop ventilates or a jet pump pulls in air.

Key Features:

• Engine protection: Cuts ignition output when engine speed reaches the preset limit, which reduces the risk of damage from over-revving.
• Direct replacement: Built as an aftermarket replacement for the original Mercury/Quicksilver and CDI Electronics limiter modules.
• Compact electronic module: Small, lightweight and designed to plug into the existing ignition wiring.
• Sierra marine quality: Sierra has supplied aftermarket marine engine parts for many years. Its products are engineered for the heat, vibration and moisture of marine use.

A failing RPM limiter can cause hard starting, misfires or a no-spark condition, so replacing it is a common part of ignition troubleshooting and repair. Choose the child item that matches your engine's cylinder configuration and required RPM limit.