888590002 Trim Position Sensor for Mercury Mariner Verado | JLM Marine

Trim Position Sensor – Fits Mercury Mariner Verado 200-300 HP Outboard

This Trim Position Sensor is engineered to fit Mercury Mariner Verado outboard motors rated 200HP to 300HP. It provides precise feedback to your engine's trim system, ensuring optimal boat performance and handling across all operating conditions.

This sensor directly replaces OEM part numbers 888590 and 888590002, offering reliable performance for Mercury and Mariner Verado models.

• Designed for Verado 200HP, 225HP, 250HP, 275HP, and 300HP outboards
• Direct replacement for Mercury Mariner OEM sensors
• Critical component for accurate trim position monitoring

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

Your package includes the following component:

• 1 × Outboard Trim Position Sensor

Installation Guide

1. Disconnect the battery to prevent electrical shock or accidental engagement during installation.
2. Locate the existing trim position sensor on your outboard motor's tilt/trim assembly. Consult your service manual if necessary.
3. Disconnect the electrical connector from the old sensor by carefully releasing the locking tab.
4. Remove mounting fasteners (typically bolts or screws) securing the sensor to the mounting bracket.
5. Extract the old sensor from its position and inspect the mounting area for corrosion or damage.
6. Clean the mounting surface to ensure a proper seal and secure fit for the new sensor.
7. Position the new trim position sensor in the same orientation as the original unit.
8. Secure the sensor with the mounting fasteners, tightening to manufacturer specifications (do not over-torque).
9. Reconnect the electrical connector firmly until it clicks into place.
10. Reconnect the battery and turn the ignition to the ON position (engine off).
11. Test the trim system by operating the tilt/trim switch and verifying the gauge responds correctly.
12. Perform a water test to confirm proper operation under real conditions.

Troubleshooting & FAQ

Q: How do I confirm this sensor fits my engine?
A: Cross-reference your current part number with 888590 or 888590002. This sensor is designed for Mercury Mariner Verado models rated 200HP to 300HP. Verify your engine model and horsepower in the compatibility table above.

Q: What are the symptoms of a failing trim position sensor?
A: Common signs include erratic or non-responsive trim gauge readings, inability to adjust trim angle, or error codes related to the trim system. If your gauge shows incorrect positions or doesn't move at all, the sensor may need replacement.

Q: How often should I replace the trim position sensor?
A: Trim position sensors typically last many years under normal conditions. Replace the sensor when you notice faulty readings, physical damage, or corrosion. Regular inspection during routine maintenance is recommended.

Q: Will this sensor require calibration after installation?
A: Most Mercury Verado systems auto-calibrate the trim sensor on startup. After installation, cycle the trim fully up and down several times with the engine running to allow the system to recognize the new sensor's range.

Q: Is this an OEM part or aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.