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877-WAYFAIR (877-929-3247)|SKU #: KOH13804

Kohler River Falls Undercounter Sink with Four-Hole Faucet Drilling

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Kohler River Falls Undercounter Sink with Four-Hole Faucet Drilling

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With an extra-deep basin, integral washboard and included soaking pan and wire rack, the River Falls laundry sink is the ideal utility sink for all your laundry tasks. Constructed of durable Kohler cast iron, this self-rimming model features an acid-resistant enamel finish, ensuring years of reliable performance.


  • Includes 23'' undermount sink kit
  • Undermount
  • Four-hole drilling for three-hole faucet and one-hole right-hand accessory
  • Single compartment
  • Integral washboard
  • IAPMO/UPC listed
  • ASME A112.19.1 listed
  • CSA International listed
  • cUPC listed
  • Cast iron construction
  • Acid-resistant enamel finish
  • River Falls collection
  • Manufacturer provides a lifetime limited warranty
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  • Exterior Sink: 25" L x 22" W
  • Basin: 14.25" D x 14.75" W x 21" L
  • Overall Sink Depth - Top to Bottom: 14.94"

Kohler River Falls Undercounter Sink with Four-Hole Faucet Drilling

Weights & Dimensions

Faucet Holes

  • Hole Diameter: 2.38"

Additional Weights & Dimensions

  • Exterior Sink: 25" L x 22" W
  • Basin: 14.25" D x 14.75" W x 21" L
  • Overall Sink Depth - Top to Bottom: 14.94"
  • Drain Connection Diameter: 2.625"


Installation Type: UndermountMaterial: Cast Iron
Number of Basins: 1Sink Shape: Rectangular
Number of Faucet Holes: 4Faucet Included: No
Handles Included: NoSoap Dispenser Included: No
Commercial Use: NoEco-Friendly: No
Country of Manufacture: United States 


Product Warranty: Enameled cast iron lifetime limited warranty 


ADA Compliant: No 

About the Manufacturer

Kohler's history begins in 1873, with the first of many bold business moves. Despite a climate of financial panic and the start of a five-year economic depression, 29-year-old Austrian immigrant John Michael Kohler purchased the Sheboygan Union Iron and Steel Foundry.

The firm had a successful start producing cast iron and steel implements for farmers, castings for the city's furniture factories, and ornamental iron pieces that included cemetery crosses, urns and settees. A key turning point came in 1883 when John Michael seized upon another bold idea to improve his customers' quality of life. By applying baked enamel coating to a Kohler horse trough/hog scalder, he had created the Kohler Co.'s first bathtub. Kohler was now in the plumbing business.

Like John Michael, many of the early employees were immigrants. Steeped in a heritage of European craftsmanship, they were eager to achieve success in their new country. Their dedication to excellence helped to forge one of the oldest and largest privately-held companies in the United States.

The value of the Arts/Industry program to the factory can be assessed from both a personal and business standpoint. For some, the experience of meeting artists from all over the world is the most important aspect. For others, it is the bottom line. Over the years, design ideas generated by artists have been translated into innovative new products offered by the company.

Kohler Co. has long encouraged an ongoing dialogue with the art community by opening the doors of its pottery and iron foundry to internationally recognized artists. In a program administered by the John Michael Kohler Arts Center , artists work side by side with Kohler associates during long-term residencies, utilizing industrial technology on projects of their own choosing. The resulting free exchange of techniques and ideas has opened whole new avenues of creative expression for the artists.

Kohler River Falls Undercounter Sink with Four-Hole Faucet Drilling

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When you buy a Kohler River Falls Undercounter Sink with Four-Hole Faucet Drilling online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Kohler Part #: 6657-4U here. If you have any questions about your purchase or any other Kitchen Sinks product for sale our customer service representatives are available to help.Whether you just want to buy a Kohler River Falls Undercounter Sink with Four-Hole Faucet Drilling or shop for your entire home, Wayfair has a zillion things home.
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Best Utility Sink Ever

Kathy from Iredell, TX– Verified Buyer

I love this sink. It is extra deep and can be used for a variety of cleaning needs (even bathing the dogs). The built in wash board and the removable rack also come in quite handy. Being made of cast iron, it will last forever.

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the best best for your money love it ?

lisa from brooklyn ny– Verified Buyer

the best for your money the price is tuff i love it extra deep and have washboard & socking pan:wirerack love dis product and fit in and 30" cabinet yes yes yes buy it the best

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OUR SKU # KOH13804

River Falls Undercounter Sink with Four-Hole Faucet Drilling is also sometimes listed under the following manufacturer numbers: K-6657-4U-0, K-6657-4U-30, K-6657-4U-33, K-6657-4U-47, K-6657-4U-58, K-6657-4U-7, K-6657-4U-95, K-6657-4U-96, K-6657-4U-FD, K-6657-4U-FE, K-6657-4U-FF, K-6657-4U-FP, K-6657-4U-FT, K-6657-4U-G9, K-6657-4U-K4, K-6657-4U-KA, K-6657-4U-NY, K-6657-4U-R1, K-6657-4U-RR, K-6657-4U-Y2