Model Number Location Overview
- Toilet model numbers are located in a variety of places on the product.
- One-piece toilet: The model number is located inside the tank.
- Two-piece toilet: Model numbers are found inside the tank and the bowl, and are specific for those parts of the toilet. A model number also identifies the toilet as a combined product, but this is not located on the toilet itself.
- Intelligent toilet: The model number can be determined by the serial number. Serial numbers are located behind the access panel, on the back of the lid, on the underside of the toilet, or under the vitreous shell.
- Vitreous China Bidet: The model number can be found under the foot of the bidet, or by using the serial number which is located on the back side or underside of the bidet bowl.
- The tank lid for both one-piece and two-piece toilets includes a part number that identifies the lid.
Tank Model Numbers
- The model number is located inside the tank, either molded into the china or stamped with blue or black ink.
- The model number consists of four or five digits and may include a K prefix.
- In some cases, the model number is preceded by 97 or F. For example, 974166 contains the model number 4166, and F4166 contains the model number 4166.
- One-piece toilet: The number inside the tank is the primary toilet model number.
- Two-piece toilet: The number inside the tank is specifically for the tank (the bowl has its own model number).
Bowl Model Numbers (Two-Piece Toilets Only)
- The bowl of a two-piece toilet has the model number molded into the china on the underside of the bowl flange.
- The number on the bowl is specifically for the bowl (the tank has its own model number).
Tank Lid Part Numbers
- The toilet tank lid also contains a number either molded into the china or stamped with blue or black ink.
Identify Toilet Model Number from Serial Number
- Toilet model numbers can be determined after locating the toilet serial number. Toilet serial numbers can be found in the following locations:
One- and Two-Piece Toilets:
- On the back or side of the inside of the toilet tank
- On the back of the toilet tank
- On the underside of the toilet bowl
- On a gray sticker on the back of the toilet
- Inside of the left rear access panel
- On the backside of the lid
- Underneath the vitreous shell
Record your serial number and contact the Customer Care Center at 1-800-4KOHLER (1-800-456-4537). They will be able to determine your toilet’s model number from the serial number.
Difficulty Identifying Your Model
- Model numbers in older toilets may be hard to read due to mineral or bacterial growth within the tank.
- Rub the area to remove residue. Refer to care and cleaning for vitreous china toilets and bidets on kohler.com/clean.
- In some KOHLER tanks, an Insuliner® tank liner may be installed, covering the model number.
- Record the part number of the toilet tank lid and contact the Customer Care Center at 1-800-4KOHLER for assistance.
1256276-10-F ©2021 Kohler Co.