Of the two options the MB Sturgis Sturgi-Stay T-Fitting for POL Valve part # 103537-MBS has two of the 250 quick disconnects which you will find on a ton of RV accessories. The Camco Brass Propane Tee w/ 4 Ports part # CAM59113 has a 1"-20 Male throwaway cylinder thread lets you attach a hose and a 1/4" Inverted flare for connecting a propane line.
There is no difference in quality between the two. One is designed for traditional type fittings the other for quick disconnects like the MB... view full answer...
The Lippert 10" Brake Hub and Drum assembly 814200 you mentioned would work just fine on a 3500lb axle as it uses the common 3500lb bearing combination of # L68149 and # L44649 but we do not carry that hub.
Instead I recommend the Dexter Trailer Hub and Drum Assembly for 3,500-lb E-Z Lube Axles - 10" Diameter - 5 on 4-1/2 # 84546UC3-EZ you mentioned as it has the same bearing combination, and will fit perfectly on your 3500lb axle.
I included a video of the # 84546UC3-EZ for you to take... view full answer...
Thanks for reaching out!
Here are the weight ratings for the SumoSprings that fit your 2017 Coachmen Leprechaun 319MB just so we can compare them next to each other:
SumoSprings # SSR-130-54 - Rated for 2,800 lbs
SumoSprings # SSR-106-47-1 - Rated for 5,000 lbs
SumoSprings # SSR-106-54-1 - Rated for 7,000 lbs
For your application it sounds like you're wanting to combine the 2.8K and 5K capacities to get the most help for your 10K axles. While I do see where you're going with this, I... view full answer...