Mercury – Power Trim Switch | Outboard Control System | Marine-Grade Rocker Style | 8M0042301

Overview

If you spend enough time on the water, you start to appreciate the small things that make a boat truly enjoyable to run. A good trim switch is one of those unsung heroes. With one quick tap, you can bring the bow down into a steady ride or lift it just enough to skim across calm water. When that switch starts sticking or hesitating, you feel it in every wave.

The Mercury Marine part number 8M0042301 Power Trim Switch brings that smooth, predictable control back into your hands. It’s simple, sure—but it’s the kind of part you rely on more than you realize. When you hit that button, you want a clean, confident response every single time. This switch delivers exactly that, even after long days in the sun or constant spray from rough water.

Key Features

• Rocker-style power trim switch designed for Force 30–125 horsepower outboards.
• Durable marine-grade construction built for constant use.
• Comes with lead wires and bullet connectors for direct connection to the engine harness.
• Engineered for smooth, consistent up/down response.
• Designed to withstand vibration, saltwater, and UV exposure.
• Manufactured to Mercury Marine original equipment specifications.

Engine & Boat Compatibility

• Fits Force 30–125 horsepower outboard engines.
• Designed for use on engine cowls for quick thumb-access trimming.
• Works well for:
  • Small fishing boats
  • Runabouts
  • Pontoon boats
  • Aluminum utility boats
  • Older Force-powered setups needing reliable trim control

Performance & Practical Benefits

A responsive trim switch completely changes how your boat handles. When the rocker switch moves with a clean click and the engine responds instantly, everything just feels tighter and more controlled. With this Mercury Marine part, trimming up to clear a stump line or dialing in your ride at cruising speed feels smooth and natural.

The switch housing is built for real marine life—salt in the air, heat beating down all day, and constant vibration whenever the motor is running. You’ll notice how solid it feels compared to cheaper aftermarket options. The wiring connections are clean, secure, and designed to integrate with the original harness without headaches.

Installation is quick, and once the switch is in place, it blends seamlessly with the engine cowling. There’s no sloppy fit or loose movement. Just a steady, reliable button you can count on every time the water gets choppy or the wind picks up.

Why Buy OEM

There’s a reason experienced boaters stick with genuine Mercury Marine parts. They’re built to fit right, last longer, and avoid all the “mystery issues” that show up with aftermarket electrical components. With an OEM trim switch, you know the cycles have been tested, the materials are chosen for real-world durability, and the wiring matches your engine like it should.

If you want fewer problems, cleaner installation, and long-term reliability, the OEM route is the smart choice. This part is designed to give you years of dependable trim control without the guesswork.

FAQ

Q1: Which engines does this trim switch fit?

It fits Force outboards from 30 to 125 horsepower.

Q2: What makes it better than aftermarket versions?

OEM switches use better sealing, more durable plastics, and clean, matched wiring for reliable long-term performance.

Q3: How do I confirm it’s the right switch?

Check your engine’s part number list or compare the wiring setup with your existing switch.

Q4: Can it handle saltwater exposure?

Yes — it’s built for marine environments, including saltwater and high UV exposure.

Q5: Is installation easy?

Most owners find it simple, especially since the switch includes leads and bullet connectors.