For shoppers focused on Niagara toilets, these two options share an unusually low 0.8 GPF flush rate and an elongated bowl, but they are not interchangeable. I’d start with the Niagara Conservation Stealth rear-outlet bowl if you need its specified rear outlet, ADA-compliant design, and are already planning around a compatible Stealth tank. The 33.0201.01 elongated bowl is a simpler fit for buyers who want the stated Stealth White finish and low-flush format, though the supplied details do not establish its outlet type or tank compatibility. The main decision is not which one flushes with less water: both are listed at 0.8 gallons per flush. It is whether your installation requirements match the bowl, tank, and outlet details you can verify before ordering.
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Key Takeaways
- Both bowls are specified at 0.8 GPF, so the supplied information does not give either a flush-volume advantage.
- The 283551 is the clearly specified choice for a rear-outlet installation, but it requires a compatible Stealth tank, model #104054.
- The 283551 is listed as ADA compliant and has a fully glazed 2-inch trapway; those details are not supplied for the 33.0201.01.
- The 33.0201.01 is identified by its Stealth White color and elongated bowl, but its outlet and tank pairing need confirmation.
- Treat these listings as toilet bowls, not complete toilets: confirm included components, tank compatibility, and rough-in requirements before purchase.
| Niagara Conservation Stealth High-Efficiency Elongated Toilet Bowl with Rear Outlet, White |  | Best for Rear-Outlet Installations | Model: 283551 | Flush volume: 0.8 GPF | Bowl shape: Elongated | VIEW ON AMAZON | See Our Full Breakdown |
| Niagara 33.0201.01 0.8 GPF CCN Elongated Bowl, Stealth White |  | Best for a Straightforward Low-Flush Bowl Search | Model: 33.0201.01 | Flush rate: 0.8 GPF | Bowl shape: Elongated | VIEW ON AMAZON | See Our Full Breakdown |
| niagara toilet | Model | Bowl shape | Outlet | Tank compatibility |
|---|---|---|---|---|
| Niagara Conservation Stealth H | 283551 | Elongated | Rear | Stealth tank #104054 only; sold separately |
| Niagara 33.0201.01 0.8 GPF CCN | 33.0201.01 | Elongated | Not specified in supplied details | Not specified in supplied details |
More Details on Our Top Picks
Niagara Conservation Stealth High-Efficiency Elongated Toilet Bowl with Rear Outlet, White
I rank the Niagara Conservation Stealth 283551 first for buyers whose plumbing calls for a rear outlet. Unlike the 33.0201.01, this listing identifies the bowl’s outlet as rear and describes it as floor mounted, giving you concrete information to compare against your existing connection. It is also the more fully documented choice: the listing specifies a fully glazed 2-inch trapway, vitreous china construction, and ADA compliance. Those details can help narrow a search, though they do not replace checking the actual installation dimensions and local requirements.
The shared 0.8 GPF flush rate means I would not choose this over the other bowl on water use alone. Its strongest case is fit and listed features, especially for someone replacing a compatible Stealth setup. The main limitation is explicit: this is a bowl designed for use with the Stealth tank #104054, which is sold separately. It is not the straightforward choice if you expect a complete toilet in one package or have a standard floor-outlet configuration. Compared with the 33.0201.01, it offers more installation information, but also makes the tank dependency impossible to ignore.
Before buying, I would verify that your existing connection matches the rear outlet and that the required tank is available and appropriate for your installation. The listing’s ADA-compliant designation is useful, but accessibility depends on the complete installed fixture and dimensions, so check the finished setup rather than relying on the label alone. This is a better-defined specialist option, not a universal replacement bowl.
Pros:- Specified 0.8 GPF flush volume
- Rear outlet and floor-mount installation are identified
- Listed as ADA compliant, with an elongated bowl
- Fully glazed 2-inch trapway and vitreous china material are specified
Cons:- Requires compatible Stealth tank #104054, sold separately
- Rear-outlet configuration limits suitability for other plumbing layouts
- Supplied details do not provide complete fit dimensions or confirm what hardware is included
Best for: Buyers replacing a rear-outlet bowl who can use the specified Stealth tank and want a listed ADA-compliant elongated option.
Not ideal for: Shoppers seeking a complete toilet, a bowl for an unverified or standard floor outlet, or a product that does not depend on a specific compatible tank.
- Model:283551
- Flush volume:0.8 GPF
- Bowl shape:Elongated
- Outlet:Rear
- Installation:Floor mount
- Trapway:Fully glazed, 2 inches
- Material and color:Vitreous china, white
- Tank compatibility:Stealth tank #104054 only; sold separately
Our verdict“Choose the 283551 when its rear outlet and required Stealth tank match your installation; otherwise, its more detailed specification sheet does not make it a universal fit.”
Niagara 33.0201.01 0.8 GPF CCN Elongated Bowl, Stealth White
The Niagara 33.0201.01 earns its place as the simpler option for buyers who have already narrowed their search to a Niagara elongated bowl with a very low listed flush volume. Its defining supplied details are direct: 0.8 GPF, elongated shape, and Stealth White finish. That may be enough to identify the right candidate when you are matching an existing fixture or coordinating a bathroom finish, but it is not enough to confirm installation compatibility on its own.
Compared with the 283551, this listing does not specify a rear outlet, ADA compliance, trapway dimensions, material, or tank compatibility. That makes it less helpful for a buyer making a plumbing-led decision. It also means I would not assume it fits the same setup as the rear-outlet model just because both are Niagara bowls and both list 0.8 GPF. The shared flush rate and elongated profile are useful points of comparison; the missing connection details are the reason this pick ranks second.
The advantage here is a clearly named finish and basic bowl specification without the rear-outlet and tank requirements stated for the 283551. But less restrictive-looking product information is not proof of broader compatibility. Ask the seller or manufacturer to confirm outlet type, tank pairing, included parts, and dimensions before ordering. This makes the most sense when those questions are already answered for your project; if you need firm rear-outlet or accessibility specifications, the 283551 is the better-documented choice.
Pros:- Uses a listed 0.8 GPF flush rate
- Elongated bowl shape
- Stealth White color is specified
- Does not carry the rear-outlet and #104054 tank requirements stated for the 283551 listing
Cons:- Outlet type and tank compatibility are not provided in the supplied details
- No trapway dimensions or ADA information are specified
- The available description does not establish included components or installation dimensions
Best for: Buyers seeking an elongated Niagara bowl in Stealth White who have confirmed the model’s outlet, tank pairing, and fit for their installation.
Not ideal for: Shoppers who need documented rear-outlet details, listed ADA compliance, or clear trapway and tank specifications before selecting a bowl.
- Model:33.0201.01
- Flush rate:0.8 GPF
- Bowl shape:Elongated
- Color:Stealth White
- Product type:Elongated toilet bowl
- Outlet:Not specified in supplied details
- Tank compatibility:Not specified in supplied details
- Trapway and accessibility:Not specified in supplied details
Our verdict“Consider the 33.0201.01 for its 0.8 GPF elongated design and Stealth White finish only after confirming the plumbing and tank details that the listing leaves open.”
How We Picked
I compared the two Niagara listings around the details that most often determine whether a toilet bowl is a practical match: flush volume, bowl shape, outlet configuration, tank pairing, accessibility information, and installation format. Since both products are described as elongated bowls using 0.8 GPF, I did not rank one above the other on those shared points. Instead, I gave the more fully specified 283551 the lead for buyers with a rear-outlet setup because its outlet type, floor-mount installation, ADA compliance, trapway, and required Stealth tank are stated. That specificity helps a buyer check fit before committing.
I assigned the 33.0201.01 a distinct role as the simpler low-flush elongated bowl pick. Its available details are narrower: Stealth White, elongated shape, and a 0.8 GPF design. I do not infer a rear or floor outlet, ADA status, trapway dimension, or tank pairing from the model name alone. Those unknowns are meaningful drawbacks, not evidence that the product lacks a feature. For both picks, I treat the supplied descriptions as the basis for comparison and advise confirming the complete fixture configuration with the seller or manufacturer. The ranking reflects clarity of fit and buyer-relevant specifications, not claims about performance testing.
| niagara toilet | Outlet | Tank compatibility |
|---|---|---|
| Niagara Conservation Stealth H | Rear | Stealth tank #104054 only; sold separately |
| Niagara 33.0201.01 0.8 GPF CCN | Not specified in supplied details | Not specified in supplied details |
Factors to Consider When Choosing Niagara Toilets
I would make this choice by matching the bowl to the plumbing and tank first, then comparing the listed features. Both options share an elongated shape and 0.8 GPF specification, so those points alone do not separate them.Confirm outlet type before choosing a bowl
The 283551 is specifically listed with a rear outlet, a detail that should guide the decision before appearance or flush volume. Rear-outlet bowls connect differently from common floor-outlet configurations, so do not assume this model will replace a bowl simply because the footprint looks similar. The 33.0201.01 listing does not state its outlet type. I would verify that detail directly instead of treating the missing information as evidence of either configuration. Compare the connection with your current toilet and confirm the required rough-in and dimensions with a qualified installer if needed.
Treat bowl and tank compatibility as a system question
Both products are presented as toilet bowls, so check whether the tank and other required components are included before you plan a complete installation. The 283551 explicitly requires the compatible Stealth tank #104054, sold separately. That can make it a logical replacement for an existing matching system, but a less convenient route if you need a complete fixture. For the 33.0201.01, the supplied details do not name a tank pairing. Confirm compatibility in writing before ordering; brand name and low flush rate are not enough to establish a match.
Read the 0.8 GPF figure in context
Both listings specify 0.8 gallons per flush, making water use a shared selling point rather than a ranking difference. A low flush volume does not, by itself, tell you how well a toilet will clear waste or whether it suits your plumbing. The supplied product information does not provide comparative flush-test results, so I would avoid assuming one bowl performs better. If water efficiency is a priority, verify the complete toilet configuration and any certification claims for the exact model you are considering. The 283551 listing identifies a WaterSense high-efficiency design in its description, while the 33.0201.01 details supplied here establish only its 0.8 GPF rate.
Check accessibility and bowl dimensions against the finished installation
The 283551 is listed as ADA compliant; no equivalent claim is supplied for the 33.0201.01. If accessibility matters, check the complete installed toilet’s height, seat, clearances, and applicable local requirements rather than relying only on a bowl description. Both options are elongated, which describes the bowl shape but does not confirm the exact projection or whether it fits your available space. I would compare manufacturer dimensions with the bathroom layout, especially near a door, vanity, or grab bars.
Separate known specifications from details that still need confirmation
The 283551 offers more stated installation information, including its rear outlet, floor-mount format, and glazed 2-inch trapway. The 33.0201.01 gives a clear model number, color, flush rate, and shape but leaves more practical questions unanswered. Before buying either one, verify the bowl’s dimensions, included hardware, seat requirements, tank pairing, and return terms. This is particularly important for the less-documented 33.0201.01: its shorter specification list should prompt questions, not guesses. A few minutes of confirmation can prevent ordering a bowl that cannot connect to the existing system.
Frequently Asked Questions
Do both Niagara bowls use 0.8 gallons per flush?
Yes. The supplied details list 0.8 GPF for both the 33.0201.01 and the 283551. That shared figure does not establish that their overall flush performance is identical, and the descriptions do not provide comparative test results. I would use flush volume as a common specification, then choose based on outlet type, tank compatibility, and verified fit.
Which of these Niagara bowls has a rear outlet?
The Niagara Conservation 283551 is explicitly described as a rear-outlet bowl. The supplied information for the 33.0201.01 does not identify its outlet configuration. If your plumbing requires a rear outlet, the 283551 is the clearly documented candidate, but confirm dimensions and tank pairing before purchase.
Does the Niagara 283551 include its tank?
The listing says the bowl is designed for the Stealth tank #104054 and that the tank is sold separately. Do not treat this bowl as a complete toilet unless the seller confirms that a compatible tank and the other required components are included in the specific package you are ordering.
Is the 33.0201.01 listed as ADA compliant?
The supplied details for the 33.0201.01 do not state ADA compliance. The 283551 listing does identify that model as ADA compliant, but buyers who need an accessible installation should check the complete fixture’s dimensions and local requirements. A bowl-level listing alone may not answer every question about the finished setup.
Can I replace my existing toilet with either bowl without checking measurements?
No. Both products are elongated bowls, but the supplied details do not provide enough dimensions to confirm they will fit every bathroom or connect to every existing toilet system. Check the outlet, rough-in, tank compatibility, projection, and included components before ordering. This is especially important for the 283551’s specified rear outlet and the 33.0201.01’s unspecified connection details.
Conclusion
For a buyer with a rear-outlet installation and access to the required Stealth tank, I’d choose the 283551: it is the more clearly specified option and includes listed ADA and trapway details. For someone who wants a Stealth White elongated bowl and has already confirmed that the 33.0201.01 matches the existing tank and plumbing, that model may be the better fit. If you need a complete toilet, neither listing should be treated as complete without checking what is in the box. My deciding rule is simple: pick by verified connection and tank compatibility first, then use color, accessibility, and the shared 0.8 GPF specification to narrow the choice.
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