BBTO RV Water Inlet Funnel 3.4" Wide-Mouth for Fresh Water Tanks — Locking Ring, Splash-Free Fast Fill

BBTO RV Water Inlet Funnel is a 3.4-inch wide-mouth plastic funnel with a locking ring that makes filling RV fresh water tanks faster and splash-free.

When you're parked at a campsite or topping off before a long drive, a dedicated, well-fitting funnel removes the guesswork and mess from refilling your fresh water jug or tank. The BBTO funnel is engineered for common RV inlet sizes and built from durable plastic so it resists temperature changes and repeated use. Its simple locking ring creates a snug, leak-reducing connection that installs in seconds without tools.

How does this funnel speed up water tank refills?

The 3.4-inch wide mouth increases flow rate and minimizes splashing so you spend less time holding a jug and more time set up or on the road. The opening accommodates most garden hoses and standard jugs used at campsites.

• 3.4" diameter wide mouth for faster fills
• Reduced splash and overflow when pouring
• Compatible with common hose and jug sizes

Will it fit my RV inlet and stay leak-free?

BBTO designed the funnel to seat securely in standard RV inlet openings. The included locking ring clamps the funnel in place, preventing accidental dislodgement and helping stop leaks during filling.

• Designed to match typical travel trailer/camper inlets
• Tool-free locking ring installs in about five seconds
• Stable fit reduces drips and wasted water

Is the material durable enough for outdoor use?

The funnel is molded from resilient plastic that tolerates both warm and cold conditions without cracking. Its simple form makes it easy to clean and resistant to wear from repeated seasonal use.

• Sturdy plastic resists temperature-related damage
• Easy to rinse or sanitize between uses
• Holds shape under normal camping and boating use

How easy is it to install, remove, and store?

Installation and removal are tool-free and quick—ideal for frequent fills or routine winterizing. The compact, lightweight design stores neatly in a utility compartment or under a sink.

• Five-second, tool-free install with locking ring
• Quick removal for cleaning or winter storage
• Compact dimensions (4.7 x 3.4 x 3.6 in) fit small storage spaces

Who is this for? The BBTO RV Water Inlet Funnel is made for RV owners, campervan and boat enthusiasts, and anyone who regularly fills portable fresh water tanks. It's especially useful for weekend campers, seasonal travelers, and first-time RVers who want a mess-free, reliable way to top off fresh water without fiddly adapters or spills. Keep it in your essentials kit for faster campsite setup and easier maintenance of your water system.