KOHLER | 4737 | C3®-125 elongated bidet toilet seat

Kohler C3-125 has now been discontinued by the manufacturer Kohler but they are still available on major retail outlets such as Amazon, Target, Lowes and Home Depot. Kohler C3-125 is one of our best heated advanced toilet seat with cleansing functionality utilizes naturally soothing water as a hygienic and refreshing toilet paper alternative. It is a great bidet with reasonable price and with great features including a tank water heating system that makes it relatively clunky at the back as shown in the picture alongside.

The water is kept in a heated tank reservoir and it has attached contol panel to operate it as shown below:

Kohler C3-125 Attached Control Panel

It comes with user-friendly control buttons that allow you to adjust the water spray for temperature and animated motion. Kohler C3-125 also comes with a heated seat, in-built odor control, grip-tight bumper, quiet-close lid, and flexible warm air flow for drying. 

KOHLER K-4737-0 C3 125 Elongated Warm Water Bidet Toilet Seat, White with  Quiet-Close Lid and Heated Seat, Automatic Deodorization and Nightlight - -  Amazon.com

The heated toilet seat comes with a tank heater that produces constantly heated water for continuous comfort. It also includes LED Nightlight for illuminating the bowl, and energy save function.

Below are the dimension of this bidet. It measures  19-15/16” long16-3/8” wide, and 6-5/16” tall at the back.

Kohler C3-125 dimensions

The product is made of plastic, weighs 6.49 lbs., and measures 20”x15”x2”.

KOHLER | 4737 | C3®-125 elongated bidet toilet seat


  • Grip-tight bumpers
  • Energy save function
  • Quiet-close lid
  • Adjustable temperature settings
  • Deodorizer for minimizing odors
  • Quick-release system
  • Two spray wands with adjustable temperature and water pressure
  • Air blowing function
  • LED Night Light
  • Tank heater
  • Front and rear wash modes
Kohler C3-125 Toilet Seat
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Kohler C3-125 Toilet Seat
  • Materials: Solid polypropylene plastic to resist staining, chipping, and fading
  • Two spray wands with adjustable water pressure, temperature, and pulsate functions
  • Automatic night light function to illuminate the bowl with energy saving functions
  • Quiet close lid to ensure a slow close that prevents slamming
  • Quick release hinges allow seat to be unlatched from toilet for easy removal and convenient cleaning; No tools required
  • Tank heater for continuously heated water for consistent comfort
  • Heated seat with adjustable temperature settings for user comfort
  • Elongated seat with cleansing functionality
  • Deodorizer helps to minimize odors
  • Dimensions: 19.94 x 16.38 x 6.31 inches


  • Tank heater
  • Adjustable temperature settings
  • In-built odor control


  • Limited to V-shaped toilets
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