Thermostat - Yamaha 75 / 90 HP 4 - Stroke 16 - Up (2016-2022) OEM# 18-3641 | WSM 775-240

Thermostat Yamaha 75 / 90 Hp 4-Stroke 16-Up OEM# 18-3641

This WSM thermostat is a quality aftermarket replacement part designed for Yamaha 4 Cyl 4 Stroke 75 and 2 other compatible models.

It replaces selected OEM reference numbers including 18-3641, 6FP-12411-00-00 and is suitable for service, repair and rebuild work.

Key Features

• Quality aftermarket replacement part from WSM
• Engineered for dependable fit, function and service life
• Designed for marine and powersports repair and maintenance
• Compatible with 20 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 775-240
• Product: Thermostat
• OEM Reference: 18-3641, 6FP-12411-00-00
• Application: Yamaha 4 Cyl 4 Stroke 75 and 2 other compatible models

Product Fitment

This part is suitable for the following models:

• Yamaha 4 Cyl 4 Stroke 75 – 2017
• Yamaha 4 Cyl 4 Stroke 75 – 2018
• Yamaha 4 Cyl 4 Stroke 75 – 2019
• Yamaha 4 Cyl 4 Stroke 75 – 2020
• Yamaha 4 Cyl 4 Stroke 75 – 2021
• Yamaha 4 Cyl 4 Stroke 75 – 2022
• Yamaha 4 Cyl 4 Stroke 90 – 2016
• Yamaha 4 Cyl 4 Stroke 90 – 2017
• Yamaha 4 Cyl 4 Stroke 90 – 2018
• Yamaha 4 Cyl 4 Stroke 90 – 2019
• Yamaha 4 Cyl 4 Stroke 90 – 2020
• Yamaha 4 Cyl 4 Stroke 90 – 2021
• Yamaha 4 Cyl 4 Stroke 90 – 2022
• Yamaha 4 Cyl Jet 4 Stroke 90 – 2016
• Yamaha 4 Cyl Jet 4 Stroke 90 – 2017
• Yamaha 4 Cyl Jet 4 Stroke 90 – 2018
• Yamaha 4 Cyl Jet 4 Stroke 90 – 2019
• Yamaha 4 Cyl Jet 4 Stroke 90 – 2020
• Yamaha 4 Cyl Jet 4 Stroke 90 – 2021
• Yamaha 4 Cyl Jet 4 Stroke 90 – 2022

Why Buy WSM

WSM is a trusted manufacturer of aftermarket marine and powersports parts, known for dependable quality, strong fitment coverage and workshop-ready replacement components.

You May Also Need

Browse related parts for compatible models:

• Voltage Regulator Mercury / Yamaha 50 - 115 / 1000 - 1300 00-25 OEM# 5VX-81960-00-00 – 004-283
• Fuel Injector Mercury / Yamaha 75 / 90 Hp 4-Stroke 05-17 OEM# 6D8-13761-00-00 – 610-313
• Water Pump Impeller Yamaha 75 - 100 Hp 4-Stroke 99-17 OEM# 67F-44352-00-00 – 700-445
• Water Pump Service Kit Yamaha 75 - 100 Hp 4-Stroke 99-21 OEM# 18-3451 – 725-445

Please use the fitment guide, OEM references and images to confirm this is the correct part before ordering.