Yamaha - Thermosensor Assembly - Temperature Sensor Component - 6C5-85790-00-00

Overview

Temperature issues aren’t always obvious until the alarm goes off—or worse, it doesn’t. This thermosensor is what keeps track of engine heat and lets the system know when something’s off. I’ve seen bad sensors give false readings or miss overheating altogether, which can turn into a real problem fast. Keeping a reliable sensor in place gives you peace of mind that the motor’s running where it should.

Key Features

• Accurate Temperature Monitoring – Measures engine heat and sends signals to the system.

• Engine Protection Support – Helps trigger warnings to prevent overheating damage.

• OEM Fit Accuracy – Matches Yamaha factory specs for proper installation and performance.

• Durable Sensor Construction – Built to handle heat, moisture, and marine conditions.

Engine & Boat Compatibility

Verify compatibility with your specific Yamaha outboard model and part number before installation.

FAQs

Q1: What are signs this thermosensor is failing?
A: Incorrect temperature readings, false alarms, or no warning during overheating.

Q2: Can a bad sensor cause engine damage?
A: Yes, if it fails to detect overheating, it can lead to serious issues.

Q3: Does this part require calibration?
A: It’s factory calibrated, but proper installation is important.

Q4: Should I replace it during cooling system service?
A: It’s a good idea if there are any signs of wear or inconsistent readings.

Q5: Is installation difficult?
A: It’s usually straightforward, but proper sealing and connection matter.