Trim Sensor SIERRA 18-7633

Compatible Engines

Maintaining the performance and steering precision of your vessel requires using original or high-quality replacement parts. The SIERRA 18-7633 Trim Sensor is a critical component of the hydraulic system, providing accurate feedback on the propeller's angle relative to the transom. This allows the operator to precisely adjust the engine setting, resulting in better hydrodynamics, fuel savings, and a smoother ride.

Important: Due to the specific manufacturing variations of outboard and sterndrive engines, compatibility must be verified by the manufacturer's catalog number (18-7633) or OE number. This part fits selected models of MERCRUISER (Alpha, Alpha Gen II, MC-I, MR) engines, but we recommend contacting our customer support in case of doubt to ensure the purchased item fits your specific year and engine type 100%.

Installation and Operation

Replacing the trim sensor is a task that requires care but does not always necessitate a specialist visit. Before starting work, be sure to disconnect the battery to avoid short circuits in the electrical system. During removal, pay attention to the condition of the wires; if they are cracked or damaged, it is worth replacing them. After installing the new SIERRA sensor, ensure the cable is secured against rubbing against moving hull parts. Regular inspection of this component prevents sudden failures during the cruise.

• Original SIERRA quality – guarantees durability and resistance to marine conditions.
• Precise readings – ensures smooth trim display operation and boat stabilization.
• Direct replacement – number 18-7633 facilitates identification in catalogs.
• Easy installation – standard mounting speeds up servicing.