Mercury MerCruiser Alpha & Bravo Trim Sender Kit

The Mercury MerCruiser 805320A03 Trim Sender Kit is a genuine Mercury Marine OEM assembly designed for Alpha One, Alpha One Gen II, Bravo One, Bravo Two and Bravo Three sterndrive applications. The kit contains both the trim position sender and trim limit switch assemblies, allowing accurate trim gauge operation while maintaining factory trim limit functionality.

The trim sender continuously monitors sterndrive position and transmits trim angle information to the dashboard trim gauge, allowing operators to optimise vessel performance, fuel economy and handling characteristics. The trim limit switch prevents the drive from being over-trimmed when using the standard trim button, helping to protect the driveline and maintain safe operating angles. Full trailer position remains available through the trailer switch function.

Manufactured to Mercury Marine OEM specifications, the 805320A03 kit provides reliable operation in harsh marine environments and is the preferred replacement when trim sender or trim limit switch faults occur. Common symptoms of a failed sender include inaccurate trim gauge readings, intermittent gauge operation or trim limit switch malfunctions.

This kit supersedes earlier Mercury trim sender kits and is one of the most commonly used trim sender assemblies across the MerCruiser sterndrive range. Engine serial number verification is recommended prior to ordering.