Mercury – Quicksilver Power Trim Sender Kit | For MerCruiser MC-I, R, MR, Alpha & Bravo Drives | 805320A03

Overview

Your trim gauge is only as accurate as the sender behind it. The Mercury Marine 805320A03 Quicksilver Power Trim Sender Kit keeps your MerCruiser sterndrive’s trim system working right, giving you precise gauge readings and smooth trim control. Designed for MC-I, R, MR, Alpha One, Alpha One Gen II, and Bravo sterndrives, this OEM sender provides reliable communication between the drive and the trim gauge. It’s a simple, plug-and-play fix that restores confidence in your boat’s trim operation — no guessing, no second-guessing, just accuracy every time you throttle up.

Key Features

• Purpose: Sends accurate trim position data from your sterndrive to the dash gauge.
• Complete Kit: Includes trim limit switch and wire leads for a full replacement.
• Design: Built to Mercury’s factory standards for signal precision and watertight reliability.
• Durability: Tested for long life under marine vibration, heat, and constant water exposure.
• Compatibility: Not for use with SmartCraft electronic systems.

Engine & Boat Compatibility

• MerCruiser sterndrives: MC-I, R, MR, Alpha One, Alpha One Gen II, and Bravo models

Performance & Real-World Benefits

The 805320A03 power trim sender makes sure your trim gauge shows exactly where your drive is positioned — critical for performance, handling, and fuel economy. When a trim sender fails, you lose that feedback and risk running too high or too low, which can affect speed and control.

This OEM sender is sealed against moisture and built to stand up to marine punishment. Once installed, you’ll regain smooth, accurate readings and dependable operation whether you’re trimming for speed, cruising, or idling into the dock.

Why Choose Mercury OEM

The Quicksilver 805320A03 is a genuine Mercury Marine replacement, designed specifically for MerCruiser sterndrives. Aftermarket trim senders often fail early due to poor sealing or inconsistent electrical output, leading to unreliable gauge readings.

Mercury’s OEM components are engineered for precision and endurance, using marine-grade materials and tight manufacturing tolerances. It’s the same sensor Mercury technicians install at the factory and in certified service centers — a proven, long-lasting solution.

FAQ

Q1: What does this kit include?
It comes with a trim limit switch and wire leads for a complete replacement setup.

Q2: What drives does it fit?
It’s made for MerCruiser MC-I, R, MR, Alpha One, Alpha One Gen II, and Bravo sterndrives.

Q3: Is it SmartCraft compatible?
No — it’s not designed for SmartCraft systems.

Q4: What happens if my sender fails?
Your trim gauge may stop working or show incorrect readings, affecting drive position control.

Q5: Why OEM over aftermarket?
OEM senders are fully sealed, corrosion-resistant, and factory-calibrated for lasting reliability and accuracy.