Port Trim Sender Sensor Sending Unit For Mercury Mariner Optimax 859187A1

Port Trim Sender Sensor Sending Unit for Mercury Mariner Optimax

This port trim sender sensor sending unit is a direct replacement part for Mercury Mariner Optimax outboard engines, with OEM cross-reference number 859187A1, monitoring the trim angle for safe and efficient boat operation.

Overview

The port trim sender sensor sending unit is a critical component that measures the tilt and trim position of the outboard motor. Designed as a replacement for Mercury Mariner Optimax engines, this sending unit ensures accurate trim readings for optimal performance and fuel economy. It is a genuine-style part that restores factory function.

Built For Performance

• Direct fit for Mercury Mariner Optimax outboard engines with OEM part 859187A1
• Provides precise trim position feedback to the gauge or control system
• Constructed from corrosion-resistant materials for marine environments
• Includes necessary hardware for straightforward installation
• Designed to withstand vibration and harsh conditions on the water
• Restores original trim sensor functionality without modification

Fits These Machines

• for Mercury Mariner Optimax outboard engines

On-The-Job Use

• Monitors outboard motor trim angle for safe planing and fuel efficiency
• Used during docking, shallow water navigation, and high-speed operation
• Helps prevent over-trimming that can cause cavitation or damage
• Essential for boaters who rely on accurate trim gauge readings

Specs At A Glance

Good To Know

Q: How do I know if my trim sensor needs replacement? A: If your trim gauge shows erratic readings or no movement, the sender may be faulty. Replacing it with this unit restores accurate trim indication.

Q: Is this the left or right side port trim sender? A: This is the port (left) side trim sender sensor. Verify your engine configuration to ensure proper fit.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.