Mercury – Active Trim Kit | 3.4L V6 & 4.6L V8 150–300 HP | Single Engine FourStroke / OptiMax | 8M0111545

Overview

The Mercury Active Trim Kit (8M0111545) is built for single-engine installations of Mercury FourStroke 150 HP and OptiMax 150–250 HP outboards, as well as 3.4 L V6 175–225 HP and 4.6 L V8 200–300 HP models.
It automatically adjusts your engine trim for smoother takeoffs, better fuel economy, and consistent handling—no manual trimming needed.

Active Trim constantly monitors engine RPM, speed, and attitude, trimming your motor for the best running angle in real time. The result is effortless performance, faster planing, and improved efficiency on every run.

Key Features

• Automatic Trim Control – Adjusts engine trim on the fly based on speed and RPM.
• Engine Compatibility – For 3.4 L V6 175–225 HP, 4.6 L V8 200–300 HP, 150 HP FourStroke, and OptiMax 150–250 HP single-engine setups.
• SmartCraft Integration – Works seamlessly with SmartCraft networks for simple plug-and-play setup.
• Fuel Efficiency & Performance – Finds the ideal trim angle for speed, comfort, and economy.
• Hands-Free Operation – Eliminates the need for constant trim adjustments.
• OEM Quality – Genuine Mercury kit built for marine conditions and long-term reliability.

Compatibility

• Single-engine 3.4 L V6 175–225 HP Mercury outboards
• Single-engine 4.6 L V8 200–300 HP Mercury outboards
• 150 HP FourStroke and OptiMax 150–250 HP engines
• System Type: Mechanical or SmartCraft capable single-engine installations

Performance & Practical Benefits

Active Trim takes the guesswork out of trimming your boat. It automatically sets the perfect angle for hole-shot and cruise while adapting to changing conditions. You’ll plane faster, save fuel, and enjoy a smoother, more balanced ride—every time you hit the throttle.

Why Buy OEM

Mercury’s Active Trim systems are factory-calibrated for their engines and SmartCraft networks. OEM hardware means easy installation, accurate response, and proven durability that matches your engine’s performance.

FAQ

Q1: What engines does this kit fit?
Single-engine 3.4 L V6 175–225 HP, 4.6 L V8 200–300 HP, 150 HP FourStroke, and OptiMax 150–250 HP outboards.

Q2: Does it work with SmartCraft systems?
Yes — it integrates directly with SmartCraft for automatic trim control.

Q3: Is it for single or multi-engine boats?
This kit is for single-engine installations only.

Q4: What does Active Trim do?
It automatically adjusts engine trim for optimum speed, handling, and fuel efficiency.

Q5: Is this an OEM part?
Yes — it’s a genuine Mercury Marine Active Trim kit, built to factory specifications.