A cracked or missing toilet cistern lid can make an otherwise working bathroom fixture look unfinished. The key to replacing one is matching the lid to your toilet’s tank—not just choosing a white ceramic cover. The options below include several lids for specific Cadet 3 models, an EAGO-compatible replacement, and one more general-purpose listing that does not name compatible toilet models. Check your toilet’s model and tank measurements before ordering.
Table of Contents
Quick Comparison
| Product | Listed compatibility | Material | Best for |
|---|---|---|---|
| 735121-400.020 Porcelain Tank Lid | Select Cadet 3 models; 4021 tank marking | Vitreous china | Matching a lid by its tank marking and measurements |
| 735121-400.020 White Porcelain Lid | Select Cadet 3 models | Porcelain | A straightforward replacement for listed Cadet 3 toilets |
| 735121-400.020 Cadet 3 Tank Lid | Select Cadet models and standard 12-inch rough-in tanks | Porcelain | A Cadet 3 lid with listed model numbers |
| EAGO R-309LID Replacement Lid | EAGO TB309 and listed compatible models | Ceramic | Replacing a lid on a compatible EAGO-style toilet |
| HomeStock White Porcelain Tank Lid | Exact compatible models are not named | Porcelain | Shoppers who can confirm fit with the seller |
Our Picks: Best Ceramic Toilet Cistern Lid reviews
Best for a Confirmed 4021 Cadet 3 Tank: 735121-400.020 Porcelain Lid
This replacement lid is intended for Cadet 3 1.6 GPF two-piece toilets with a standard 12-inch rough-in tank. The listed compatible models are 2386.012, 2383.012, and 2384.012. Its most useful fit check is the “4021 tank” marking inside the old lid, which the product description identifies as a key match.
The lid is made from vitreous china and has a glossy white finish. The listed dimensions are 17.37 inches long by 8.68 inches wide, giving you specific measurements to compare with your existing cover. Installation is a simple lift-and-place swap, with no tools or adhesive needed.
The fit information is more detailed than what several other listings provide, but this is not a universal tank lid. Confirm the model, marking, and dimensions before ordering; a lid that looks similar may not sit securely on a different tank.
Pros:
- Names three compatible Cadet 3 models
- Provides a 4021 marking check and exact dimensions
- Vitreous china construction with a glossy white finish
- Drop-in installation requires no tools
Cons:
- Compatibility is limited to the listed tank and models
- Does not suit shoppers who cannot confirm their tank details
Verdict: Choose this lid if your toilet matches the listed Cadet 3 models and your old cover has the 4021 marking.
Simple Cadet 3 Replacement: 735121-400.020 White Porcelain Lid
This white porcelain cover is listed as a replacement for Cadet 3 1.6 GPF two-piece toilets with a 12-inch rough-in. The stated compatible models are 2386.012, 2383.012, and 2384.012, matching the model list for the first pick.
Its smooth white surface is described as resistant to chipping and staining. Like the other Cadet replacement options here, it is designed for a quick drop-in installation rather than a repair that involves tools or changes to the flushing parts.
The main trade-off is that the listing provides less fit-check detail than the first pick: it does not give dimensions or mention the 4021 marking. If you cannot identify your model by name, compare your existing lid carefully and confirm the fit before buying. The lid is a replacement cover, not a complete toilet or tank mechanism.
Pros:
- Lists three compatible Cadet 3 models
- White porcelain finish coordinates with many standard fixtures
- Designed for simple drop-in installation
- Does not require special tools or skills to install
Cons:
- No lid dimensions are provided in the supplied description
- Compatibility is not described as universal
Verdict: This is a reasonable option when you have one of the named Cadet 3 models and do not need the extra marking and measurement details offered by the first pick.
Cadet 3 Option with Several Listed Models: 735121-400.020 Tank Lid
This porcelain lid is also described as fitting select Cadet toilets, including models 2386.012, 2383.012, and 2384.012, with standard 12-inch rough-in tanks. Its model-specific listing makes it more useful than a generic cover when you already know your toilet’s model number.
The product description highlights a smooth, non-porous surface that is easy to clean and a white finish intended to retain its appearance. The lid is presented as lightweight and straightforward to install. Those details make it a practical replacement option, though the supplied description does not provide the cover’s dimensions or a separate tank-marking check.
Compared with the first Cadet 3 pick, this one gives a similar model list but less precise information for checking the fit. Use the model numbers as a starting point, then compare the tank and old lid before ordering. Do not rely on the shared 735121-400.020 number alone if other details do not match.
Pros:
- Lists the same three Cadet 3 model numbers as the other options
- Porcelain construction with a smooth white surface
- Described as easy to clean and install
- Provides a model-specific alternative for Cadet owners
Cons:
- Does not provide exact lid measurements
- Does not include the 4021 marking check in its description
Verdict: Consider this option if your toilet is one of the listed Cadet models, but verify the dimensions because the listing offers fewer fit details than the first pick.
Best for Compatible EAGO TB309 Toilets: EAGO R-309LID
The EAGO R-309LID is a ceramic replacement cover listed for the EAGO TB309. The description also names Whitehaus WHMFL3309-EB and Ariel TB309-1M as compatible models. This model-based fit information makes it a focused choice rather than a general-purpose toilet tank lid.
The package includes the lid only. It does not include a toilet, flushing mechanism, or other parts, so it is suited to replacing a chipped or missing cover—not fixing a flushing problem. The product information does not provide dimensions, so confirm that your toilet’s model matches the listed compatibility before ordering.
Unlike the three Cadet 3 choices, this lid serves a different set of toilets. It is not a substitute for a Cadet 3 cover simply because both are ceramic and white. Check the manufacturer and model carefully to avoid ordering the wrong shape.
Pros:
- Names EAGO TB309 and two additional compatible models
- Ceramic construction in white
- Provides a focused replacement for a chipped or missing lid
- Clearly identified as a lid-only part
Cons:
- Designed for specific models rather than general use
- Does not include a flushing mechanism or toilet
Verdict: Pick the R-309LID only if your toilet is a TB309 or one of the other models named in the listing.
General White Porcelain Cover with Fit to Confirm: HomeStock
HomeStock describes this as a white porcelain replacement lid with a smooth-looking finish intended to blend with a range of bathroom styles. The description gives an approximate weight of 6.6 pounds and says the item includes the tank lid only.
The biggest concern is fit. The listing says it is designed to match an original toilet but does not name compatible toilet models or provide lid measurements in the supplied details. That makes it harder to judge whether it will fit your tank than the Cadet 3 and EAGO options in this guide.
The description also says the flushing button and mechanism are sold separately as R-359FLUSH. That distinction matters if you need more than a cover. Before choosing this lid, ask the seller to confirm compatibility with your toilet model and compare the lid’s shape and measurements with your existing tank.
Pros:
- White porcelain construction
- Described as a stable replacement cover
- Useful if you can confirm the fit with the seller
- Clearly states that the lid is sold separately from other toilet parts
Cons:
- No compatible toilet models are named in the supplied details
- No lid dimensions are provided
Verdict: Consider HomeStock only after confirming the exact fit; the lack of model and measurement details makes it a less certain choice than the model-specific lids.
How to Choose a Ceramic Toilet Cistern Lid
Match the Toilet Model First
Tank lids are often made for a specific toilet or tank shape. Find the model number on your toilet or its documentation and compare it with the models listed for the replacement. In this selection, the Cadet 3 lids name models 2386.012, 2383.012, and 2384.012, while the EAGO lid names a separate set of compatible models. A white finish or similar appearance is not enough to confirm a match.
Check Markings on the Existing Lid
If you are considering the first 735121-400.020 option, look inside your old lid for the “4021 tank” marking. The product description identifies that marking as a useful compatibility check. Keep in mind that a marking check is most helpful when it agrees with the toilet model and the lid’s size.
Compare Measurements and Shape
Measure your existing lid’s length and width, and note the shape of its edges and any curves. The first Cadet 3 option lists dimensions of 17.37 by 8.68 inches. Several other listings do not provide measurements, so check with the seller if you cannot confirm fit from the model number alone. A cover that is too large, too small, or shaped differently may not sit flat.
Choose the Right Material and Finish
The listed replacements are described as porcelain, vitreous china, or ceramic. These terms identify the hard, glazed material used for the covers, but they do not tell you whether a particular lid will match your toilet. Check the listed finish and compare it with your existing fixture if color matching matters. The Cadet options are described as white, and the EAGO lid is also listed in white.
Know What Is Included
Most of these products are replacement lids only, not complete toilet tanks or toilets. The HomeStock description specifically notes that its flushing button and mechanism are sold separately. If your toilet has a flushing problem, replacing the cover alone will not address it. Check the product description for included parts before placing an order.
Consider Installation and Safe Handling
The Cadet 3 options are described as drop-in replacements that need no tools. Even so, ceramic and porcelain lids can be damaged if dropped or knocked against a hard surface. Lift the old cover carefully, set it on a stable surface, and lower the replacement gently onto the tank once you have confirmed the fit.
Frequently Asked Questions
Are toilet cistern lids universal?
No. These listings show why you should check compatibility: several are made for specific Cadet 3 models, while the EAGO lid is listed for different toilets. Do not assume a lid will fit based on color or material alone.
How can I tell whether a Cadet 3 lid will fit?
Compare your toilet’s model number with the models named in the product listing. For the first 735121-400.020 option, also check for the “4021 tank” marking inside your old lid and compare the stated dimensions with your existing cover.
Can I replace a ceramic toilet tank lid myself?
The Cadet 3 lids in this guide are described as drop-in replacements that require no tools. Lift the old cover off carefully and place the replacement gently on the tank. If the new lid does not sit flat, stop and recheck the fit rather than forcing it.
Does a replacement tank lid fix flushing problems?
No. A lid covers the tank; it does not replace the flushing mechanism. The EAGO listing specifically notes that replacing the flushing mechanism is a separate repair, and the HomeStock listing says its button and mechanism are sold separately.
What should I do if the listing does not name my toilet model?
Compare the shape and measurements of your old lid with the product details, and ask the seller to confirm compatibility before ordering. The HomeStock option does not name specific compatible models or provide lid dimensions in the supplied information, so extra checking is especially important.
Are the products sold as complete toilets?
No. These are replacement covers. The EAGO listing says the toilet is sold separately, and the HomeStock description also identifies its item as a lid only. Check each listing to confirm which parts are included.
Final Recommendation
For a Cadet 3 toilet, the first 735121-400.020 option is the easiest to verify because its description includes compatible models, the 4021 tank marking, and exact dimensions. If you have an EAGO TB309 or one of the other named compatible models, the EAGO R-309LID is the more relevant pick. For any lid, confirm the model and measurements before ordering; the HomeStock option needs the most extra fit checking because its supplied details do not name compatible models.
