Yamaha F1B-U3850-02-00 - Seat Lock Assembly | EXR, EX, EX Deluxe & More

The genuine Yamaha F1B-U3850-02-00 Seat Lock Assembly is an OEM replacement component for compatible Yamaha WaveRunner and other listed Yamaha applications. This part is used within the access and retention system and supports factory access, locking, or retention functions for the associated component. Using the correct Yamaha OEM part helps maintain factory fit, compatibility, and dependable operation. Confirm your exact model and year in the compatibility table below before ordering.

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Key Features & Benefits

• Genuine Yamaha OEM Part: Factory part number F1B-U3850-02-00 manufactured for compatible Yamaha applications.
• Factory Fit & Compatibility: Designed around Yamaha specifications, dimensions, and the surrounding factory assembly.
• Factory Access Function: Supports factory access, locking, or retention functions for the associated component.
• Service-Ready Replacement: Suitable for routine maintenance, restoration, or repair when this part number is specified for the model.

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Fits These Yamaha Models

Yamaha Model	Compatible Years
ER1050 EXR	2021
EX1050 EX	2017-2018, 2021
EX1050 EX Deluxe	2017-2019, 2021
EX1050 EX Sport	2017-2018, 2021
EX1050 EXR	2019
FX1000 FX140	2004
FX1000 WaveRunner FX	2005-2008
FX1000A FX140 Cruiser	2004
FX1000A WaveRunner FX Cruiser	2005-2008
FX1100 WaveRunner FX HO	2004-2006, 2008
FX1100 WaveRunner VX	2007
FX1100A WaveRunner FX Cruiser HO	2004-2008
FX1100B WaveRunner FX Cruiser HO 50th Ann.	2006
FX1800 WaveRunner FX Cruiser SHO	2008-2011
FX1800 WaveRunner FX SHO	2008-2011
FY1800 WaveRunner FX HO	2009-2011
FY1800A WaveRunner FX Cruiser HO	2009-2011
GP800A WaveRunner GP800R	2004-2005
GP1300 WaveRunner GP1300R	2003-2008
GP1800	2017-2018
GP1800 GP SVHO	2024
GP1800R HO	2021
GP1800R SVHO	2021
GX1800 WaveRunner FZR	2009-2016
GX1800A WaveRunner FZS	2009-2016
VX1050 WaveRunner VX-C	2020-2021
VX1050A WaveRunner VX Cruiser	2016, 2019-2021, 2024
VX1050B WaveRunner VX Deluxe	2016, 2024
VX1050C WaveRunner VX	2016-2017, 2019-2021, 2024
VX1050F WaveRunner VX Limited	2016, 2019-2021, 2024
VX1100 WaveRunner VX	2008
VX1100A WaveRunner VX Cruiser	2008-2009, 2015
VX1100B WaveRunner VX Deluxe	2008-2009, 2015
VX1100C WaveRunner VX	2015
VX1100C WaveRunner VX Sport	2008-2009
VX1800 WaveRunner VX Cruiser HO	2016-2017, 2019-2020
VX1800 WaveRunner VX Limited HO	2021
VX1800AK WaveRunner VXR	2015-2019
VX1800K WaveRunner VXS	2015-2016
YXR45F Rhino 450	2006-2009
YXR45F Rhino 450 Special Edition	2007-2008
YXR66F Rhino 660	2004-2007
YXR66F Rhino 660 Ducks Unlimited	2007
YXR66F Rhino 660 Exploring Edition	2006-2007
YXR66F Rhino 660 Special Edition	2006-2007
YXR66F Rhino 660 Sport Edition	2007
YXR700F Rhino 700 FI	2008-2009, 2011-2013
YXR700F Rhino 700 FI Ducks Unlimited	2008-2009
YXR700F Rhino 700 FI Special Edition	2008-2009, 2013
YXR700F Rhino 700 FI Sport Edition	2008-2009, 2011-2012

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Frequently Asked Questions

What is Yamaha part F1B-U3850-02-00?

F1B-U3850-02-00 is the genuine Yamaha Seat Lock Assembly, an OEM replacement component used on the compatible Yamaha models listed above.

What is Yamaha F1B-U3850-02-00 used for?

It is used within the access and retention system and supports factory access, locking, or retention functions for the associated component.

Which Yamaha models fit F1B-U3850-02-00?

This part fits the Yamaha models and years shown in the compatibility table above, including EXR, EX, EX Deluxe, and EX Sport. Fitment can vary by year and configuration, so verify your exact model and model year before ordering.

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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.