Nilight RV tote tank carrier for 4-4.5 in square bumpers — bolt-on powder-coated steel, adjustable fit

Nilight's RV bumper tote tank carrier is a bolt-on, powder-coated steel rack that secures 15–36 gallon tote tanks to 4"–4.5" square RV bumpers for travel and storage.

Whether you boondock, take family road trips, or need an easy way to transport black- or gray-water tote tanks, this carrier provides an adjustable, low-profile mounting solution for RVs without ladders. Built from Q235 steel with a weather-resistant finish, the rack clamps to the bumper and locks the tank in place with ratchet straps and non-slip pads. The kit ships with everything required for a complete install and disassembles for compact storage when not in use.

How does this carrier keep a tote tank steady while driving?

The Nilight design combines reinforced U-shaped clamps and M10 bolts to clamp the rack solidly to 4"–4.5" square bumpers, eliminating wobble and lateral movement. Two included 3m ratchet straps wrap the tank down while non-slip pads prevent shifting and protect the bumper finish.

• U-shape clamp with reinforced M10 bolts for a rigid hold
• Two 3m ratchet straps to secure tank top-to-bottom
• Non-slip bumper pads to reduce vibration and abrasion
• Flat and spring washers distribute load and prevent loosening

Will this rack fit my tote tank and bumper dimensions?

The carrier accommodates common tote tank sizes—15, 21, 28, and 36 gallons—by allowing adjustable vertical tube placement and horizontal support spacing. It is engineered specifically for square RV bumpers 4"–4.5" wide and 3.6"–6" tall; measure your bumper height and width to confirm fit before ordering.

• Compatible with most market tote tanks: 15–36 gallons
• Works with bumpers 4"–4.5" wide and 3.6"–6" tall
• Adjustable height to adapt to different tank profiles
• Bolt-on design for precise fit on compatible bumpers

How durable is the rack in outdoor and roadside conditions?

Constructed from Q235 steel and finished with black powder coat, the rack resists corrosion, UV exposure, and everyday wear — designed for repeated use in outdoor and marine-adjacent environments. The hardware set includes multiple washers and lock pins to maintain clamping force over time with minimal maintenance.

• Q235 steel frame for strength and load capacity
• Black powder-coat resists rust, chips, and scratches
• Heavy-duty bolts, nuts, and spring washers for reliable fastening
• Disassembles for storage to reduce season-long exposure

How easy is installation and storage when unused?

Installation is a simple bolt-on process that most RV owners can complete with basic hand tools; the kit includes short and long bolts plus all necessary washers and nuts. When the tank is not needed, the rack breaks down into a compact set of tubes and plates that store efficiently in an underbelly bay or compartment.

• Simple bolt-on assembly with supplied hardware
• Adjustable vertical/horizontal tubes to match tank size
• Quick disassembly for compact storage in RV bays
• Locking pins included for fast reassembly and safety

Who is this for: The Nilight RV bumper tote tank carrier is made for RV owners who need a safe, removable way to carry common tote tanks on rigs without ladders—campers, towable trailers, and motorhomes that use 15–36 gallon tanks and have 4"–4.5" square bumpers will find it especially useful. It suits travelers who value corrosion-resistant construction, a wobble-free mounting system, and the ability to stow the rack compactly when not hauling waste tanks.