1B7-81940-00-00 Starter Solenoid for Yamaha 252SD 1800 2021-2023

Starter Solenoid for Yamaha 252SD 1800

This starter solenoid for Yamaha 252SD 1800 boats (2021-2023) is a direct replacement electrical relay that engages the starter motor when you turn the key, carrying the OEM cross-reference 1B7-81940-00-00.

Overview

This starter solenoid for Yamaha 252SD 1800 is a replacement relay that routes high-current battery power to the starter motor on command. It helps deliver a strong, reliable crank signal every time you hit the key. Built for Yamaha 252SD 1800 owners doing routine electrical maintenance or tracking down a no-crank fault.

Built For Performance

• Direct replacement for OEM part number 1B7-81940-00-00
• Heavy-duty internal contacts built to handle repeated high-current starting cycles
• Sealed housing resists moisture and spray common in marine engine bays
• Weather-resistant terminals for lasting conductivity in wet conditions
• Drop-in mounting that fits the factory solenoid location

Fits These Machines

• for Yamaha 252SD 1800, model years 2021-2023

On-The-Job Use

• Replacing a failed solenoid that causes slow or no cranking
• Routine electrical troubleshooting on the starting circuit
• Restoring reliable key-turn starts before a day on the water

Specs At A Glance

Good To Know

Q: How do I know if my starter solenoid has failed? A: A single loud click with no crank, or no response at all when turning the key, often points to a bad solenoid. Testing for voltage at the starter terminal while cranking can confirm it.

Q: Is this an original Yamaha part? A: No, this is an aftermarket replacement solenoid that cross-references OEM number 1B7-81940-00-00. It is not manufactured by or affiliated with Yamaha.

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