American Standard replacement toilet tank lids can be confusing because the number printed inside the tank is often not the number printed on the replacement lid. The tank has its own model number, while the tank cover may use a separate 735xxx-series part number.
The best way to identify the correct lid is to find the tank number first and then cross-reference the correct tank-cover number.
Where to look for the American Standard tank number
Remove the tank lid carefully and inspect the inside walls of the tank. Look for stamped, molded, or printed numbers. Older toilets may have several markings, so record all of them rather than choosing one at random.
Also inspect the underside of the original lid if you still have it. A lid part number there can provide a second confirmation.
Tank model number and lid part number are different things
American Standard parts documentation commonly lists the toilet tank and tank cover separately. That means a search for the tank number may not immediately look like the number on the lid.
Here are several examples:
| Tank / model number | Replacement lid / cover number | FixALid reference |
|---|---|---|
| 4019 / 4019N | 735122-series | 735122 replacement lid |
| 4083 / related 4083-series applications | 735003-series | 735003 replacement lid |
| 4260 Champion | 735100-series | 735100 replacement lid |
| 4392 | 735076 | 735076 replacement lid |
Those examples show why searching only one number can cause confusion. If your tank says 4019, the lid you need may be sold as 735122 rather than “4019 lid.”
What does the .020 or other suffix mean?
American Standard part numbers often include additional digits or a finish suffix. For example, a tank cover may appear as 735122-400.020. The core part number identifies the cover family, while the suffix can identify a specific configuration or finish.
When shopping for an older replacement, the most important first step is matching the correct tank-cover family. Color should be confirmed separately.
Do not identify an American Standard lid by dimensions alone
Measurements are extremely useful for checking a suspected match, but they should not be the only evidence. Multiple American Standard lids can have similar widths and depths while using different underside contours.
For the strongest match, compare:
- tank model number,
- lid or cover part number,
- overall width and front-to-back depth,
- corner shape,
- underside ribs and locating feet, and
- color.
Why the underside matters
The top of a toilet tank lid can be deceptively simple. The underside is where the fit is determined. Raised ribs, ceramic feet, inner lips, and molded contours position the lid on the tank.
If you have a broken original, keep at least one large piece showing the underside until you have positively identified the replacement.
Common American Standard identification mistakes
Searching the bowl number instead of the tank number
Two-piece toilets use a separate bowl and tank. A number found on the bowl may identify the bowl rather than the lid you need.
Assuming every Champion, Cadet, or Colony lid is the same
Family names can span multiple generations and tank designs. “Champion” or “Cadet” alone is not specific enough. Find the actual tank number.
Ignoring the full part-number family
A customer may search 735122, 735122-400, or 735122-400.020. These can all point toward the same basic cover family, but the exact application and finish still need to be checked.
Choosing a color from a phone photo
Bone, linen, almond, and white can shift dramatically under warm bathroom lighting. Confirm the lid model first, then compare the finish.
Fastest way to find the right replacement
- Take the lid off and photograph every number inside the tank.
- Photograph the underside of the original lid if available.
- Measure the tank opening and original lid.
- Search the tank number and any 735xxx number separately.
- Confirm the color only after the fit is established.
FixALid catalogs hard-to-find original American Standard toilet tank lids by both the lid number and compatible tank numbers whenever that relationship can be verified. That makes it easier to find the same physical replacement whether you started with a number from the tank or the lid.