I misplaced my flush fitting for my Yamaha 195S jet boat and needed to flush my engine on a Sunday when my dealer was closed. I designed this pretty quickly and later matched it with the replacement which is the exact same size. It worked just fine! You will need to supply your own washer to prevent the water from leaking during operation.

Use a stronger material like PETG or even ASA with multiple walls. Print with supports for best finish. They're easy to remove.

This is supposed to fit a ton of Yamaha boat and PWC models like:

Yamaha Waverunner 1995 WAVE RAIDER 1100 - RA1100T Cylinder Crankcase
Yamaha Waverunner 1996 WAVE VENTURE 1100 - WVT1100U Cylinder Crankcase
Yamaha Waverunner 1996 WAVE RAIDER 1100 - RA1100U Cylinder Crankcase
Yamaha Boat 1999 LS2000 - LST1200X Exhaust
Yamaha Boat 1999 EXCITER 270 - EXT1200X Exhaust
Yamaha Boat 2000 LS2000 - LST1200Y Exhaust
Yamaha Boat 1998 EXCITER TWIN - EXT1200W Exhaust
Yamaha Boat 1998 EXCITER SINGLE - EXS1200W Exhaust
Yamaha Waverunner 1997 GP1200V Exhaust
Yamaha Waverunner 2000 XL800 - XA800Y Exhaust (1)
Yamaha Waverunner 1999 WAVE RUNNER GP800 - GP800X Exhaust (1)
Yamaha Waverunner 1999 WAVE RUNNER SUV1200 - SV1200X Exhaust (1)
Yamaha Waverunner 2000 SUV1200 - SV1200Y Exhaust (1)
Yamaha Waverunner 2000 GP760 - GP760Y Exhaust (1)
Yamaha Waverunner 1997 WAVE VENTURE 760 - WVT760V Exhaust (1)
Yamaha Waverunner 1997 WAVE VENTURE 1100 - WVT1100V Exhaust (1)
Yamaha Waverunner 1997 WAVE RUNNER GP760 - GP760V Exhaust (1)
Yamaha Waverunner 1998 WAVE RUNNER GP1200 - GP1200W Exhaust (1)
Yamaha Waverunner 1998 WAVE RUNNER GP800W - GP800W Exhaust (1)
Yamaha Waverunner 1999 WAVE RUNNER GP1200 - GP1200X Exhaust (1)
Yamaha Waverunner 2000 XL700 - XL700Y Exhaust (1)
Yamaha Boat 1997 EXCITER - EXT1100V Exhaust (1)
Yamaha Boat 1999 EXCITER 135 - EXS1200X Exhaust (1)
Yamaha Boat 1998 EXCITER 220 - EXT1100W Exhaust (1)
Yamaha Boat 1996 EXCITER - EXT1100U Exhaust (1)
Yamaha Waverunner 1997 WAVE BLASTER II - WB760V Exhaust (1)
Yamaha Waverunner 1998 WAVE RUNNER XL1200 - XL1200W Exhaust (1)
Yamaha Waverunner 1998 WAVE RUNNER GP760 - GP760W Exhaust (1)
Yamaha Waverunner 1996 WAVE BLASTER II - WB760U Exhaust (1)
Yamaha Waverunner 2000 WAVERUNNER (Metallic Marine Silver) - XL800Y Exhaust (1)
Yamaha Waverunner 2000 GP800 - GP800Y Exhaust (1)
Yamaha Waverunner 1996 WAVE RAIDER 760 - RA760U Exhaust (1)
Yamaha Waverunner 1999 WAVE RUNNER XL760 - XL760X Exhaust (1)
Yamaha Waverunner 1999 WAVE RUNNER XL700 - XL700X Exhaust (1)
Yamaha Waverunner 1999 WAVE RUNNER GP760 - GP760X Exhaust (1)
Yamaha Waverunner 1998 WAVE RUNNER XL760 - XL760W Exhaust (1)
Yamaha Waverunner 2022 VX DELUXE WITH AUDIO VX DELUXE - VX1050DX F4NA Exhaust (2)
Yamaha Waverunner 2022 GP1800R HO HO WITH AUDIO - GP1800DX F4M4 Exhaust (2)
Yamaha Waverunner 2022 GP1800R SVHO SVHO WITH AUDIO - GP1800CX F4P4 Exhaust (2)
Yamaha Waverunner 2022 JET BLASTER - JB1050X F6C1 Exhaust (2)
Yamaha Waverunner 2022 VX-C - VX1050G-X F6G2 Exhaust (2)
Yamaha Waverunner 2022 VX CRUISER WITH AUDIO VX CRUISER - VX1800CX F4S6 2022 Exhaust (2)
Yamaha Waverunner 2022 FX CRUISER SVHO WITH AUDIO FX CRUISER SVHO - FX1800BX F5G2 Exhaust (2)
Yamaha Waverunner 2022 EX LIMITED - EX1050DX F3YT Exhaust (2)
Yamaha Waverunner 2022 EX - EX1050CX F3YS Exhaust (2)
Yamaha Waverunner 2023 GP1800R HO_HO WITH AUDIO - GP1800DY F4M6 Exhaust (2)
Yamaha Waverunner 2023 GP1800R HO_HO WITH AUDIO - GP1800BY F4M5 Exhaust (2)
Yamaha Waverunner 2023 FX HO WITH AUDIO - FX1800JY F3VD Exhaust (2)
Yamaha Waverunner 2011 VXS - VX1800K Exhaust (2)
Yamaha Waverunner 2011 FX CRUISER HO - FY1800AK Exhaust (2)
Yamaha Waverunner 2012 VXR - VX1800AL Exhaust (2)
Yamaha Waverunner 2013 VX CRUISER_VX1100BM VX DELUXE - VX1100BM Exhaust (2)
Yamaha Waverunner 2009 WAVERUNNER VX CRUISERVX1100BH WAVERUNNER - VX1100BH Exhaust (2)
Yamaha Waverunner 2010 WAVERUNNER FX HO - FY1800J Exhaust (2)
Yamaha Waverunner 2018 EX DELUXE - EX1050AT Exhaust (2)
Yamaha Waverunner 2018 EX SPORT - EX1050BT Exhaust (2)
Yamaha Waverunner 2015 FX CRUISER HO - FB1800AP Exhaust (2)
Yamaha Waverunner 2014 WAVERUNNER VX SPORT - VX1100CN Exhaust (2)
Yamaha Waverunner 2014 VXR - VX1800AN Exhaust (2)
Yamaha Waverunner 2015 VX CRUISER_VX1100BP VX DELUXE - VX1100BP Exhaust (2)
Yamaha Waverunner 2015 VXR - VX1800A-P Exhaust (2)
Yamaha Waverunner 2018 FX HO - FB1800T Exhaust (2)
Yamaha Waverunner 2018 FX CRUISER SVHO - FC1800AT Exhaust (2)
Yamaha Waverunner 2017 WAVE RUNNER FX HO - FB1800S Exhaust (2)
Yamaha Waverunner 2017 VX1050CS Exhaust (2)
Yamaha Waverunner 2017 VX CRUISER HO - VC1800S Exhaust (2)
Yamaha Waverunner 2019 FX CRUISER HO - FB1800AU Exhaust (2)
Yamaha Waverunner 2017 FX LIMITED SVHO - FC1800BS Exhaust (2)
Yamaha Waverunner 2018 VX - VX1050CT Exhaust (2)
Yamaha Waverunner 2018 VXR - VX1800AT Exhaust (2)
Yamaha Waverunner 2021 VX CRUISER WITH AUDIO VX CRUISER - VX1050BW F4N2 Exhaust (2)
Yamaha Waverunner 2021 GP1800R SVHO WITH AUDIO - GP1800CW F4P2 Exhaust (2)
Yamaha Waverunner 2021 HO WITH AUDIO - GP1800DW F4M2 Exhaust (2)
Yamaha Waverunner 2021 VX CRUISER WITH AUDIO VX CRUISER - VX1800BW F4S2 Exhaust (2)
Yamaha Waverunner 2021 FX CRUISER SVHO - FC1800AW F3X7 Exhaust (2)
Yamaha Waverunner 2020 VX-C - VX1050GV Exhaust (2)
Yamaha Waverunner 2020 VX LIMITED - VX1050FV Exhaust (2)
Yamaha Waverunner 2021 EXR - ER1050W F4L3 Exhaust (2)
Yamaha Waverunner 2020 FX SVHO - FC1800V Exhaust (2)
Yamaha Waverunner 2020 FX LIMITED SVHO - FC1800BV Exhaust (2)
Yamaha Waverunner 2019 VX - VX1050CU Exhaust (2)
Yamaha Waverunner 2019 VX CRUISER HO - VC1800U Exhaust (2)
Yamaha Waverunner 2019 VX CRUISER VX1050BU - VX1050AU Exhaust (2)
Yamaha Waverunner 2009 WAVERUNNER FX SHO - FX1800HB Exhaust (2)
Yamaha Waverunner 2008 WaveRunner VX - VX1100G Exhaust (2)
Yamaha Waverunner 2009 WAVERUNNER FX SHO - FX1800HK Exhaust (2)
Yamaha Waverunner 2009 WAVERUNNER FZR - GX1800HB Exhaust (2)
Yamaha Waverunner 1999 WAVE RUNNER XL1200 LTD - XA1200X Exhaust (2)
Yamaha Waverunner 2006 WaveRunner GP1300R - GP1300E Exhaust (2)
Yamaha Waverunner 2006 WaveRunner VX110 Deluxe - VX1100AE Exhaust (2)
Yamaha Waverunner 2006 WaveRunner FX Cruiser - FX1000AE Exhaust (2)
Yamaha Waverunner 2006 WaveRunner FX - FX1000E Exhaust (2)
Yamaha Waverunner 2008 GP1300R - GP1300-G Exhaust (2)
Yamaha Waverunner 2007 GP1300R - GP1300-F Exhaust (2)
Yamaha Waverunner 2007 WAVERUNNER FX CRUISER - FX1000AF Exhaust (2)
Yamaha Waverunner 2007 WaveRunner VX Sport - VX1100CF Exhaust (2)
Yamaha Waverunner 2007 WaveRunner VX Cruiser - VX1100AF Exhaust (2)
Yamaha Waverunner 2008 WAVERUNNER FX CRUISER - FX1000AG Exhaust (2)
Yamaha Waverunner 2008 WaveRunner VX Sport - VX1100CG Exhaust (2)
Yamaha Waverunner 2005 WaveRunner VX110 Sport - VX1100D Exhaust (2)