Mercury – Trim Limit Switch Kit | Digital Tilt-Up Control | 8M0059532

Overview

When a motor climbs too high on tilt, it can run into brackets or rigging that were never meant to carry that load. The Mercury 8M0059532 Trim Limit Switch Kit prevents that. Designed as a digital limit device for the 150 horsepower Four Stroke, it sets a clear upper stop so the engine tilts only as far as it should. You get a cleaner, more predictable lift, and the hardware around the engine stays protected every time you raise it.

Key Features

• Digital Limit Function – Uses a digital signal to control the maximum tilt-up height of the engine.
• Tilt Protection – Prevents the motor from over-tilting into the transom or rigging components.
• 150 HP Specific Design – Engineered exclusively for the 150 HP Four Stroke outboard.
• Clean System Integration – Ties directly into the digital trim and tilt circuit for precise operation.
• Consistent Travel Stop – Delivers a reliable, repeatable upper limit during every lift cycle.
• Marine-Duty Build – Constructed to handle vibration, moisture, and long-term outboard use.

Engine & Boat Compatibility

• Mercury 150 HP Four Stroke

Performance & Practical Benefits

This digital switch brings a sense of control to the top end of the trim cycle. Instead of guessing where the safe stop point is, the engine reaches the same upper limit every time. It reduces the chance of the motor contacting rigging or climbing into an overextended position, especially helpful when loading, trailering, or lifting the engine around tight transoms. Once set, the limit works quietly in the background and holds its position season after season.

Why Buy OEM

Digital limit switches need precise communication with the engine’s trim circuit. Mercury’s OEM design matches the electrical behavior of the 150 HP Four Stroke exactly, which keeps the stop point consistent and dependable. Aftermarket versions often drift or fail early, creating unpredictable tilt behavior. The factory kit installs cleanly, lasts longer, and maintains accuracy without constant adjustment.

FAQ

Q1: How do I know if I need a digital trim limit switch?
If the engine tilts higher than expected or makes contact with rigging or brackets, the limit function is missing or failing.

Q2: Does this switch change the way the boat trims while running?
No. It only controls the final tilt-up height, not on-plane trim adjustments.

Q3: Is setup difficult after installation?
Most installations only need a simple limit adjustment once to establish the correct stop point.

Q4: Does the digital design affect gauge readings?
No. It controls tilt travel only and does not interfere with trim gauge output.

Q5: Is it suitable for saltwater use?
Yes. The switch and wiring are built for long-term marine exposure when installed properly.