Description
Product Overview
The Thetford 40951 is a premium black water tank built for the demanding needs of RV enthusiasts. Constructed from high‑impact polymer, it resists cracks and corrosion, ensuring long‑term durability. Measuring 42 x 22 x 17 inches and weighing 26 pounds, the tank provides ample capacity while remaining portable. Key specifications include a horizontal orientation that removes the need to tip the tank, a large washout port for thorough rinsing, rugged wheels for easy mobility, a corner outlet for fast drainage, and a sturdy tow handle that attaches to a trailer hitch for secure transport.
Usage
Ideal for full‑time travelers, weekend campers, and anyone using an RV or trailer, this tank excels in both on‑road and off‑grid environments. Whether you are parked at a campground, navigating a remote trail, or staying at a boondocking site, the tank’s design simplifies waste disposal and cleaning. The horizontal layout allows you to keep the tank level, preventing spills, while the washout port makes flushing out residue quick and mess‑free. 
Why Choose Us
Thetford is a trusted name in mobile sanitation, and the 40951 model reflects the brand’s commitment to quality and functionality. Each tank undergoes rigorous testing to meet automotive standards, guaranteeing reliability under varied conditions. The combination of heavy‑duty wheels, a reinforced tow handle, and a corrosion‑resistant shell sets this product apart from generic alternatives, offering peace of mind for long journeys.
Key Features
- Horizontal design eliminates the need to tip the tank
- Large washout port enables easy, thorough rinsing
- Rugged, heavy‑duty wheels for smooth movement on uneven terrain
- Corner outlet provides fast, thorough drainage
- Sturdy tow handle hooks to trailer hitch for secure transport
FAQ
Can this tank be used on any RV?
The 40951 fits most standard RV black water systems due to its common dimensions and connection fittings, but always verify compatibility with your vehicle’s plumbing.
How do I clean the washout port?
Simply attach a garden hose to the large washout port and flush with water; the wide opening ensures debris is cleared quickly.
Is the tow handle strong enough for frequent moving?
Yes, the tow handle is reinforced with steel brackets and is designed to withstand repeated hooking to a trailer hitch without loosening.
What is the warranty on this tank?
Thetford provides a limited one‑year warranty covering manufacturing defects for this model.
Does the tank require any special installation?
Installation is straightforward: position the tank horizontally, connect the inlet and outlet hoses, secure the tow handle, and you’re ready to use.





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