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Looking For Replacement Backflush Coupled For 2016 Nautilus P1 Panel  

Updated 03/05/2026 | Published 02/09/2026

Question:

I have a 2016 Nautilus P1, looking for a replacement for my backflush coupler, pn 301-036-00020. I am looking for a replacement for this part. What trailer part do I need?

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Expert Reply:

Hello Terry, thanks for reaching out. Yes, we do have a direct replacement for the 301-036-00020 backflush coupler on your 2016 Nautilus P1 panel. For that you will need the following:

- Replacement Plastic Check Valve for B&B Molders City Water Inlet - Black # BM98GR

expert reply by:
0
Jesse M
Replacement Plastic Check Valve for B&B Molders City Water Inlet - Black
Replacement Plastic Check Valve for B&B Molders City Water Inlet - Black
(click to enlarge)
Jesse M. profile picture
Etrailer Expert

Jesse M.

3/4/2026

Hey Terry, how did the replacement check valve work out for your Nautilus P1 panel? Your update could make it easier for the next person needing that same backflush coupler.

Terry S. profile picture

Terry S.

3/4/2026

@JesseM The new coupler was very easy to install. I had stripped out the threads after a high quantity of screwing in and removing my hose from the coupler, so I screwed a quick disconnect into my new coupler. Works awesome.
Jesse M. profile picture
Etrailer Expert

Jesse M.

3/5/2026

@TerryS Nice! Glad to hear the install went smoothly. Thanks for sharing!

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