ARTICLE: Water Tank Straps vs Brackets vs Cradles

Last updated: November 3, 2026

The three common ways to mount a van water tank are straps, rigid brackets, and full cradles. Straps are quick and easy to service, brackets are a common choice for undermount tanks, and cradles add protection for exposed or off road tanks. Whatever you choose, tie into factory structure, not thin sheet metal.

Why Mounting Matters

A full tank can weigh hundreds of pounds. GoCode's 36-gallon wheel well tank, for example, lists a filled weight of 327 lbs. Poor mounting can cause movement, abrasion, or failure. GoCode wheel well tanks include adjustable straps and mounting brackets.

Straps

Ratchet straps or rigid metal bands hold the tank by tension. They're quick to install and easy to service, but tension can change over time, so inspect them periodically. Straps suit interior tanks where cabinet space is tight. They're generally not recommended for large undermount tanks.

Rigid Brackets

Formed metal brackets shaped to the tank bolt into factory mounting points, pinch welds, or reinforced underbody structure. They spread weight evenly and resist vibration. A common choice for undermount tanks.

Full Cradles

A metal frame or cage around the tank. Strong and protective, but heavier and more work to fabricate and install. They can block access to fittings unless you build in service panels. Cradles typically aren't included with tanks.

Wheel Well Tanks

  • Rigid straps: secure, but plumbing access later means unbolting hardware and partly disassembling cabinetry.

  • Soft straps or brackets: easier to loosen for service.

How to Choose

Consider tank size and weight, mounting location, and how often you'll service it. Mount to crossmembers, frame rails, pinch welds, or reinforced underbody points. Leave access to drain ports, dump valves, sensors, and fittings.

Key Takeaways

  • Interior wheel well: rigid straps for most secure, soft straps or brackets for serviceability.

  • Undermount: rigid brackets into factory structure.

  • Exposed or off road: cradle if protection is needed.

  • Never mount to thin sheet metal alone.

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