When you need extra reach for your RV propane connections, the Marshall Excelsior MER613-108 delivers a full 9 feet of flexible, high-pressure LP gas hose with UL- and CGA-approved construction and fully crimped brass ferrules on both ends. Built in the USA with a 5-year limited warranty, this hose is engineered specifically for demanding RV and portable propane applications where a standard short hose won't reach.
Marshall Excelsior has manufactured propane regulators, hoses, and LP gas equipment for decades. The MER613-108 is purpose-built for RV liquid propane gas systems, connecting portable cylinders, dual-tank manifolds, or external tanks to regulators, grills, generators, and other LP appliances. At 108 inches -- a full 9 feet -- this hose gives you the slack and flexibility to route lines around obstacles or connect to a remote tank without makeshift extensions.
Both ends terminate in 3/8-inch female flare swivel fittings, the standard connection type on most RV LP regulators and portable propane appliances. Swivel ends prevent hose twist during connection and disconnection, protecting the hose body from torsion damage over time. The fully crimped brass ferrules create a leak-resistant, pull-rated mechanical connection that won't loosen with vibration or thermal cycling -- a common failure point on cheaper hoses.
Rated for 350 PSI working pressure, well above the low-pressure demand of most RV and portable LP appliances, providing a substantial safety margin in normal service.
Each crimped brass ferrule assembly is pull-tested to 400 lbs., confirming the mechanical integrity of the end fittings and hose body under stress.
The flexible thermoplastic hose body carries both UL and CGA approvals, meeting recognized safety standards for LP gas service in recreational and portable applications.
Built-in thermal protection helps shield the hose body from radiant heat common near RV chassis components, cookstove burners, and generator exhausts.
At 108 inches, this hose gives you the length to keep connections clean and strain-free in tight RV bays, when connecting a portable generator to a remote LP tap, or when running a line from an external tank on a camping site. Shorter hoses force awkward routing and can put mechanical stress on regulator inlets.
The 3/8-inch female flare (also written 3/8" F.F.) is the most common thread type on RV LP regulators, two-stage regulators, and portable appliance hoses. It connects to male flare fittings (3/8" M.F. or POL-to-flare adapters) on tanks, regulators, and appliance inlets. The swivel design allows you to thread the fitting without rotating the hose body, making installation much easier in confined spaces. Always use a backup wrench on the mating male fitting to avoid over-rotating the hose during tightening.