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If you’ve been RVing for more than a season, you already know that dump day is nobody’s favorite. However, a bad sewer hose makes it so much worse. Last spring, I finally got fed up with my old bargain-bin hose after it developed a hairline crack near the fitting and started leaking mid-dump at a crowded campground. That moment of pure horror — and the cleanup that followed — pushed me to finally write this Camco RV sewer hose kit review after weeks of hands-on use with a proper replacement.
Before that incident, I’d been using a no-name kit I picked up at a truck stop years ago. The fittings never sat quite right, the hose kinked constantly, and I always felt like I was one bad connection away from disaster. After the crack situation, I knew I needed something purpose-built, durable, and reliable. Cheap was clearly not working out for me.
So I started researching, asking in a couple of RV Facebook groups, and reading through dozens of reviews. One name kept coming up again and again: Camco RhinoFLEX. Specifically, the 20-foot kit. Here’s everything I found out — from the first unboxing to several months of full-time use on the road.
Why I Chose the Camco RhinoFLEX 20-Ft RV Sewer Hose Kit
Honestly, I had a short list of must-haves before I bought anything. First, I needed a longer hose. My previous 10-footer left me parking awkwardly at every single site just to reach the sewer connection. Second, I wanted fittings that actually worked with different sewer pipe sizes, because campground hookups vary wildly. Third, I wanted something that wouldn’t collapse on me mid-use.
The Camco RhinoFLEX 20-Ft RV Sewer Hose Kit (39742) checked every box. The 20-foot length gives me real flexibility when parking. The included 4-in-1 adapter connects to 3-inch slip and 3-, 3.5-, and 4-inch NPT threaded sewer connections — which covers virtually every hookup I’ve encountered. Multiple RV forums cited it as the go-to upgrade from entry-level hoses, and Camco has a solid reputation in the RV accessories space.
I also briefly considered the 15-foot version, but given how often I’d struggled with hose length in the past, the extra five feet seemed worth it. More on that alternative option at the end of this post.
First Impressions: Unboxing and Build Quality
The kit arrived well-packaged, and everything was organized inside the box. Right away, I noticed how much more substantial the hose felt compared to my old one. It has a reinforced steel wire coil running through it, which gives it real structure. You can feel that it’s designed to hold its shape rather than flatten or kink under pressure.
The clear elbow fitting stood out immediately. Being able to see what’s flowing through it sounds gross — and, yes, it is a little gross — but it’s genuinely useful. You can tell when the tank is fully emptied, which means no guesswork and no premature disconnects. That’s a small but practical detail I hadn’t thought to look for before.
The 4-in-1 adapter felt solid in my hand, not flimsy like the single-piece plastic connectors I’d used before. The bayonet fittings on the hose ends twisted and locked with a satisfying click. Everything came with caps to keep things sealed during storage and transport — another thing my old hose lacked entirely. Build quality was noticeably better from the moment I held it.
What’s Included in the Kit
- 20-foot RhinoFLEX sewer hose (steel wire-reinforced)
- Clear 90-degree elbow fitting
- 4-in-1 adapter (fits 3″ slip and 3″, 3.5″, 4″ NPT threaded connections)
- Storage caps for both ends
My Testing Protocol: How I Actually Used It
I started using this kit in late March during a two-week trip through the Texas Hill Country, followed by about three months of weekend trips and two longer hauls. In total, I’ve used this hose at roughly 20 different campgrounds — state parks, private RV resorts, and a few COE sites. That mix gave me a good range of hookup types and ground conditions to test against.
My routine is pretty standard: I dump the black tank first, followed by the gray tank to rinse the hose. Then I flush with fresh water before disconnecting. I’ve used the kit in temperatures ranging from around 45°F to 95°F, which gave me a sense of how the hose material performs in both cool and hot conditions. I also stored it in my basement storage compartment between trips, coiled loosely rather than folded.
I paid close attention to three specific things during testing: how well the fittings sealed at different campground connections, whether the hose maintained its shape without kinking, and how easy the whole setup was to break down and clean after use.
What Actually Changed: Honest Results
The difference was noticeable right from the first dump. The hose stayed round and open throughout the entire process — no collapsing, no kinking, no awkward repositioning mid-flow. That alone made the experience calmer. Dump day used to feel stressful. Now it just feels like a chore, which is exactly what it should be.
The 4-in-1 adapter worked perfectly at every campground I visited. I had one site with an older, recessed sewer connection that would have been a nightmare with my old single-size fitting. The adapter handled it without any issue. That versatility is genuinely valuable when you’re traveling to unfamiliar campgrounds.
The clear elbow became one of my favorite features over time. It sounds like a minor thing, but knowing exactly when the tank is empty — rather than guessing by time or sound — is a real improvement to the process. Furthermore, it makes it easier to confirm your gray water rinse is running clear before you disconnect.
A Moment of Doubt
I’ll be honest — around week three, I had a moment where I questioned whether I’d gotten a good seal on a slightly awkward hookup at a state park. The ground was uneven, and the hose was sitting at a weird angle. I kept checking the connection because I was half-convinced it was going to leak. It didn’t. But that anxiety stuck with me long enough to make me extra careful about supporting the hose on uneven terrain going forward. A hose support stand — which doesn’t come with the kit — would genuinely help in those situations.
After three-plus months of use, there’s no visible cracking, no smell, and the fittings still twist and lock as firmly as they did on day one. The steel wire reinforcement shows no signs of warping or breaking down.
The Downsides: What I Didn’t Love
No product is perfect, and this one has a few real limitations worth knowing about before you buy.
First, the 20-foot length is fantastic for reach, but it does make the hose somewhat bulkier to store. Mine takes up a meaningful chunk of my basement compartment. If you’re tight on storage space, that’s worth factoring in.
Second, I mentioned the uneven ground issue above. The hose does a good job of holding its shape, but it won’t prop itself up at an angle on its own. You’ll want a sewer hose support if your sites frequently have elevation changes between the RV and the hookup. That’s an extra purchase not everyone anticipates.
Third, while cleaning is easier than it was with my old hose, it’s not effortless. The interior ridges — a result of the coiled wire reinforcement — mean that rinsing thoroughly takes a little extra time. A tank rinser helps, but you do need to be intentional about it.
Finally, this is not a budget product. It costs more than entry-level hoses. However, given what I experienced with cheap alternatives, I’d argue the price difference is completely justified. You’re paying for reliability and longevity, not just a brand name.
Final Verdict: My Camco RV Sewer Hose Kit Review Summary
After several months of consistent use across a wide range of campgrounds and conditions, I can say without hesitation that the Camco RhinoFLEX 20-Ft RV Sewer Hose Kit (39742) is a genuine upgrade over budget alternatives. It performs reliably, holds up well, and makes the whole dump process significantly less stressful.
Who Should Buy This
- Full-timers or frequent travelers who need a dependable, long-lasting hose
- Anyone upgrading from a flimsy, no-name kit
- RVers who visit a variety of campgrounds with different sewer connection sizes
- Anyone who’s ever had a hose fail mid-dump and never wants to repeat that experience
Who Might Want to Skip It
- Occasional RVers who only dump a handful of times per year and have very limited storage space
- Anyone on a very tight budget who needs something functional right now and plans to upgrade later
- RVers who consistently park at sites where 10–15 feet of hose length is always sufficient
If you’ve been on the fence, I’d encourage you to stop waiting for another leak to push you into the upgrade. This is one of those purchases I genuinely wish I’d made sooner.
What About the 15-Foot Version?
If 20 feet of hose sounds like more than you need — or storage space is genuinely tight — the Camco RhinoFLEX 15′ RV Sewer Hose Kit (39770) offers the same clear elbow, 4-in-1 adapter, and quality construction in a shorter, easier-to-store package. It includes the same caps and fittings, so the core experience is identical. For weekend warriors with consistent site setups, 15 feet may honestly be all you need. However, if you travel full-time or visit sites with longer hookup distances, the extra five feet in the 20-foot kit is worth the slightly larger footprint.
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