The MB Sturgis Sturgi-Stay kit installs inline at your motorhome's existing POL tank connection and instantly adds two Model 250 quick-disconnect ports -- one for an auxiliary propane cylinder and one for portable appliances. Stop repositioning the coach just to refill or run an outdoor grill. One brass T-fitting, one 72-inch fill hose, and you have a permanent, low-profile solution built for everyday RV use.
Motorhome propane systems typically use a POL (Prest-O-Lite) valve at the onboard tank. The 103538-MBS T-fitting threads directly onto that POL valve, splitting the connection into three paths: your existing coach supply line stays in place, and two new Model 250 quick-disconnect ports open up for auxiliary or appliance use. No cutting, no flaring, no regulator changes needed at the fitting itself.
The 72-inch (6-foot) auxiliary hose gives you enough reach to connect a standard BBQ-sized cylinder sitting beside or behind the coach -- useful for boondocking stretches when you want to preserve the built-in tank for cooking and heating while running an outdoor appliance from a portable cylinder.
Solid brass construction threads directly onto standard POL tank valves. Durable, corrosion-resistant, and rated for LP service.
Two Model 250 quick-disconnect ports -- one for an auxiliary cylinder, one for portable appliances such as grills or fire pits.
Six-foot hose reaches portable cylinders parked beside the coach without straining connections or repositioning the vehicle.
Connects auxiliary propane supply inline -- no need to move the motorhome to a fill station just to top off an onboard or auxiliary tank.
The Sturgi-Stay product line from MB Sturgis is built around making POL-connected propane systems more versatile without requiring major plumbing changes. The Model 250 quick-disconnect standard used throughout the line allows compatible hoses, appliance adapters, and auxiliary connections to snap in and out safely -- the port self-seals when a connector is removed, so you don't need to shut off the tank valve every time you disconnect a portable appliance.
The 103538-MBS is the core kit for motorhomes: it provides the T-fitting backbone and the auxiliary fill hose in one package. Additional Model 250 accessories -- appliance hoses, extended-length fill hoses, regulators -- can be added to either port as your setup grows.
This kit is designed for motorhomes with exposed POL-valve propane tanks -- typically Class A and Class C coaches where the tank is accessible from a compartment. If your rig uses an ACME or QCC1 (Type 1) valve rather than a POL valve, this T-fitting is not the correct fitment; MB Sturgis offers separate kits for those configurations.
Once installed, the T-fitting stays in place even when both QD ports are unused. The self-sealing ports mean the fitting does not create an open leak path when no accessories are connected.
Both ports on this T-fitting use the MB Sturgis Model 250 quick-disconnect standard. Only Model 250 compatible plugs and hoses will mate correctly. Verify that any additional hoses or appliance adapters you purchase are labeled "Model 250 compatible" before connecting. Standard POL hose fittings are NOT the same as Model 250 quick-disconnect plugs.
This T-fitting installs at the high-pressure (tank) side of the system, before the regulator. The auxiliary cylinder connected via the 72-inch hose must have its own regulator, or flow must pass through the coach's existing regulator path depending on how the system is configured. Review your coach's propane schematic before connecting an auxiliary tank to ensure regulated pressure is maintained to all appliances.