Camco
Camco RhinoFLEX 20-ft sewer hose kit: a complete 20-foot dump hose with a clear elbow
Two 10-foot RhinoFLEX hoses with swivel fittings, a clear elbow with a 4-in-1 dump adapter, and four storage caps. The listing says the hose is 23-mil polyolefin with a steel wire, and that each section compresses to 39 inches.
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9.0/10 RigRank score
Model 39742 is the kit to buy if you don't already own a hose you trust. The listing includes two 10-foot sections with fittings attached, one clear elbow with a 4-in-1 adapter, and four caps. The 4-in-1 is the part that saves a second trip: the listing says it fits a 3-inch slip or 3, 3.5, and 4-inch threaded dump pipes. The clear elbow is how you see the last of the tank instead of guessing.
Fittings swivel. That matters more than the brand color. A bayonet pulled sideways, because the hose was an inch short, is the leak people blame on the hose. The length calculator adds slack on purpose. RhinoFLEX's wire-reinforced wall also holds a bend, which is why a support still helps: the hose will happily stay in a sag if you let it.
Each section collapsing to 39 inches is what lets the kit live in a 4-inch bumper only if you take the 4-in-1 adapter off, which the listing says explicitly. A storage tube is the better home if the elbow is bulky. OUTPRIZE's tube listing says the elbow will not fit inside. Plan on that before you assume the kit and the tube are a matched set.
We have not dumped a tank through this hose for the review. The score reflects a complete kit, a published adapter range, and swivel fittings that attack the actual leak point. Valterra's Dominator kit is the same shape of product and a fair alternative if a RhinoFLEX fitting is too bulky for your hose bay.
What the listing actually says
| Length | Two 10-ft sections (20 ft kit) |
|---|---|
| Wall | 23-mil polyolefin, steel wire (listing) |
| Compressed | 39 in per section, fittings on |
| Model | 39742 |
| Checked | Live Amazon listing on 2026-11-10. In stock that day. |
Works in its favor
- Clear elbow plus a 4-in-1 adapter for the dump inlet sizes the listing names
- Swivel fittings, so the hose can lie flat instead of twisting the bayonet
- Two 10-foot sections store shorter than a single 20-foot hose
Holds it back
- The elbow is the bulky piece. Some tubes and bumpers will not swallow it
- A joined pair has one extra connection versus a single 20-foot hose
- Wire-reinforced hose holds a low spot unless you support it
Which listing to open
- RhinoFLEX 20-ft kit, model 39742 B01HPHR30U on Amazon
Questions worth answering first
Is 20 feet enough?
Often, at a campground site. It is not enough when the site inlet is across a road or a park dump wants a long run. Use the hose-length calculator with the path you will actually walk, and add a 10-foot extension before the trip if the number comes out over 20.
Can I store the elbow in a bumper tube?
The Camco listing says you can store the hoses in a 4-inch bumper if you remove the 4-in-1 adapter. OUTPRIZE's storage tube says the elbow fitting will not fit. Don't buy a tube assuming the clear elbow goes inside.
See where this sits in the Best RV Sewer Hoses in 2026 roundup.