Thermostat - Yamaha 115 HP 4 - Stroke 14 - Up (2014-2022) OEM# 18-3639 | WSM 775-245

Thermostat Yamaha 115 Hp 4-Stroke 14-Up OEM# 18-3639

This WSM thermostat is a quality aftermarket replacement part designed for Yamaha 4 Cyl 4 Stroke 115 and 2 other compatible models.

It replaces selected OEM reference numbers including 18-3639, 6EK-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 27 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 775-245
• Product: Thermostat
• OEM Reference: 18-3639, 6EK-12411-00-00
• Application: Yamaha 4 Cyl 4 Stroke 115 and 2 other compatible models

Product Fitment

This part is suitable for the following models:

• Yamaha 4 Cyl 4 Stroke 115 – 2014
• Yamaha 4 Cyl 4 Stroke 115 – 2015
• Yamaha 4 Cyl 4 Stroke 115 – 2016
• Yamaha 4 Cyl 4 Stroke 115 – 2017
• Yamaha 4 Cyl 4 Stroke 115 – 2018
• Yamaha 4 Cyl 4 Stroke 115 – 2019
• Yamaha 4 Cyl 4 Stroke 115 – 2020
• Yamaha 4 Cyl 4 Stroke 115 – 2021
• Yamaha 4 Cyl 4 Stroke 115 – 2022
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2014
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2015
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2016
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2017
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2018
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2019
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2020
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2021
• Yamaha 4 Cyl 4 Stroke 1.8L SHO 115 – 2022
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2014
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2015
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2016
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2017
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2018
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2019
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2020
• Yamaha 4 Cyl Jet 4 Stroke 115 – 2021
• Yamaha 4 Cyl Jet 4 Stroke 115 – 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:

• Water Pump Service Kit Yamaha 115 Hp 4-Stroke 02-21 OEM# 18-3442 – 725-434
• Seal Water Pump Yamaha 115 - 300 Hp OEM# 18-1835 – 770-125
• Poppet Valve Mercury / Yamaha 75 - 300 Hp OEM# 60H-12416-00-00 – 785-200-01
• Bushing Tilt Tube Yamaha 75 - 300 Hp OEM# 90386-25M31-00 – 986-210

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