Propane Hose for Cummins Onan RV Generator

Updated 09/10/2020 | Published 02/24/2020

Question:

Will this hose run an onboard Cummins onan generator in a 5th wheel camper?

asked by: Gregory B

Helpful Expert Reply:

Thank you so much for the info and the pictures!

According to my research it looks like your Cummins Onan RV Generator uses a 3/8" NPT Female fitting so you'll need a hose like part # 100040-144-MBS. I have attached a link to all of our hose selections that have the 3/8" male and female ends that you can filter through.

I'm not quite sure what end you'll need to connect this to a regulator/propane tank as it looks like the male end goes into your generator when it is normally supposed to fit to the regulator. I recommend reaching out to Cummins for specifics on what products they recommend to safely provide propane to the generator.

expert reply by: Jon G

click to enlarge

Richard S.

9/7/2020

I am hooking up a 6500W Onan generator in my new Montana fifth wheel. It was generator ready from the factory. The wiring was a snap, but I can’t find any info on the gas line. I know that it takes a 3/8” gas line, but is it high pressure or regulated pressure?

Jon G.

9/10/2020

According to my research it looks like your 6500W Onan generator needs to be connected to low pressure propane, so you will connect it to your propane setup after the regulator.