1B7-81940-00-00 Starter Solenoid for Yamaha GP 1800 2017-2018

Starter Solenoid for Yamaha GP 1800

This starter solenoid activates the high-current circuit that cranks the engine on Yamaha GP 1800 watercraft, serving as a direct replacement cross-referenced to OEM part 1B7-81940-00-00.

Overview

This starter solenoid is a replacement electrical relay built for Yamaha GP 1800 personal watercraft, sending battery current to the starter motor when the start button is pressed. It cross-references OEM part 1B7-81940-00-00, giving riders a direct-fit option for a failed or corroded relay. This starter solenoid suits owners performing routine electrical maintenance on their 2017 to 2018 GP 1800.

Built For Performance

• Heavy-duty copper contacts for reliable current transfer
• Sealed housing resists moisture and spray common in marine use
• Direct-fit mounting matched to the OEM 1B7-81940-00-00 footprint
• Rated for the cranking current demands of an 1800cc engine
• Corrosion-resistant terminals for long service in wet environments
• Drop-in replacement requiring no wiring modifications

Fits These Machines

• for Yamaha GP 1800 (2017-2018)

On-The-Job Use

• Replacing a solenoid that clicks but will not crank the engine
• Restoring dependable starting after corrosion or water intrusion
• Routine electrical service on 2017 to 2018 GP 1800 models
• Pre-season maintenance before launching the watercraft

Specs At A Glance

Good To Know

Q: How do I know if my solenoid has failed? A: A common sign is a single loud click with no engine crank when the start button is pressed, often accompanied by a battery that tests at full charge. Corroded terminals or a swollen housing also point to replacement.

Q: Is this an original Yamaha part? A: This is an aftermarket starter solenoid referenced to OEM part 1B7-81940-00-00, not a Yamaha-branded component. Verify the part number against your machine before ordering.

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