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Looking For Propane Pigtail To Replace MEC Marshall Excelsior Co. MER426-20 Dark Green UL Listed 650  

Updated 02/11/2026 | Published 02/07/2026

Question:

Hi, I need to replace a leaking Propane Pigtail. The one I currently have is a MEC Marshall Excelsior Co. MER426-20 Dark Green UL Listed 650G MAWP 350 PSI. It seems to have a 3/8 Male connector instead of a 1/4 so I might also need an adapter. The 2 Stage regulator it connects to is also a Marshall MEGR-291H. High capacity, Green bonnet. The hose needs to be longer than 1ft but shorter than 2ft, maybe 18.

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Expert Reply:

Hello Karl, thanks for reaching out. We do have a propane pigtail that will work for you. I recommend the MB Sturgis Propane Pigtail # 100473-20-MBS which is 20" long and has the same specs as the current hose. It sounds like you will also need the MB Sturgis Propane Adapter Fitting # 204120-MBS to connect the pigtail to your regulator.

expert reply by:
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Jesse M
MB Sturgis Propane Pigtail w/ Back Check - RV Type 1 x 1/4" Male NPT - 1-5/8'
MB Sturgis Propane Pigtail w/ Back Check - RV Type 1 x 1/4" Male NPT - 1-5/8'
(click to enlarge)
Karl R. profile picture

Karl R.

2/11/2026

Thank you so very much for all of your help, support and patience Jesse!

Jesse M. profile picture
Etrailer Expert

Jesse M.

2/11/2026

@KarlR Of course! Glad to help. Feel free to come back anytime you need anything!

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