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This Rheinland cap can be a replacement of your water filler cap to easily fill your onboard water tanks thanks to the hose connection adapter which enables you to connect a standard garden hoses to a fill up tap.
It has a built-in overpressure valve which allows you to use it with tanks without an overpressure valve.
Please Note: You need to check and make sure that your water inlet on your vehicle has a 3 point bayonet type fitting.
NOT compatible with Fiamma Water Filler caps.