KOHLER K-5871-5UA3-0 Riverby Single Bowl Undermount Kitchen Sink, White

New -22% KOHLER K-5871-5UA3-0 Riverby Single Bowl Undermount Kitchen Sink, White

An elegant and versatile addition to the kitchen, the Kohler Riverby single bowl undermount kitchen sink (model K-5871-5UA3) offers an understated beauty with a clean, versatile design to complement any decor. Its single, large bowl provides ample space to soak and wash cookware, while a sloped base to a single offset drain minimizes water pooling.

5871-5UA3 main angle
The Riverby with a single, large bowl for ample space to soak and wash (view larger).


5871-5UA3 accessories
Comes with a custom-fit colander, a utility rack, and left-hand stainless-steel bottom basin rack (view larger).
At a Glance
K-5871-5UA3 Riverby Single Bowl Undermount Kitchen Sink At a Glance:
  • Versatile kitchen sink with 30-1/4 x 17-1/4-inch bowl

  • Crafted from enameled cast iron for years of durability

  • Smooth, non-porous surface is easy to clean

  • Includes utility rack, colander with integral cutting board, and bottom basin rack

  • Under-mount installation available with five holes

  • Limited lifetime warranty
At a Glance

White finish (view larger).

Crafted from enameled cast iron, this sink resists scratching, burning, and staining for years of beauty and reliable performance. One of only a few plumbing manufacturers who produce cast iron products in the United States, Kohler protects this sink with a limited lifetime warranty. And the enameled cast iron has a smooth, non-porous surface, which makes it very easy to clean.

The Riverby comes with a custom-fit colander with integral cutting board, a utility rack with soaking cup, and a left-hand, stainless steel bottom basin rack. Designed for a 36-inch minimum base cabinet width, the sink measures 33 x 22 inches with a 30-1/4 x 17-1/4-inch bowl area and a 9-inch drain area. It has five oversized faucet holes (2-3/8-inch) plus an extra-large drain hole (3-7/8-inch). The bowl slopes 2 degrees toward drain to minimize water pooling, and its offset drain helps increase workspace in the sink and storage space underneath.

Enameled Cast Iron: Lasting Strength and Style

Built to last for generations, a Kohler enameled cast iron sink makes an enduring statement of beauty in your home. Its rich finish and long-lasting presence make a bold statement in any room--standing beautifully on its own or highlighting other materials.

Produced in Kohler, Wisconsin and crafted from a minimum of 80 percent recycled material, a Kohler sink is built with lasting beauty and the strength to withstand the test of time. Kohler's manufacturing process ensures that each piece is a genuine, handcrafted fingerprint that carries our pride into the home for generations to come.

You'll be able to find just the right color to fit your personality and home decor with the Riverby's 22 colors, including white, sea salt, biscuit, almond, cane sugar, dune, frost, ice grey, sandbar, Mexican sand, cashmere, basalt, thunder grey, ember, suede, black 'n tan, caviar, and black black, plus four limited edition Jonathan Adler colors: Greenwich Green, Piccadilly Yellow, Palermo Blue, and Annapolis Navy.

Kohler's Cast Iron Limited Lifetime Warranty

Kohler warrants the enameled cast iron component of this kitchen sink to be free of defects in material and workmanship during normal residential use and that it will not chip, crack, or burn for as long as the original consumer purchaser owns his or her home. Gloss reduction, scratching, staining and alkaline etching of the finish over time due to use, cleaning practices or water or atmospheric conditions, are not manufacturing defects but are indicative of normal wear and tear.

What's in the Box

K-5871-5UA3 Riverby undermount kitchen sink; utility rack with soaking cup (K-6194); colander with integral cutting board (K-6239); left-hand bottom basin rack (K-6237); cut-out template; 23-inch under-mount sink kit; installation instructions

5871-5UA3 kitchen
Made from durable enameled cast iron for years of beauty and reliable performance (view larger).
5871-5UA3 kitchen
Resists scratching, burning, and staining (Basalt finish shown in both images; faucet not included; view larger).

Refunds & Returns Policy

To begin the return process, please email us at [email protected] A member of our support team will contact you within 24 hours with your prepaid return shipping label.

We appreciate your business and want you to be completely satisfied with your purchase. If for any reason you wish to make a return, we will be happy to help you.We offer 15 days Free returns.

Full Refund: We are happy to offer you full refund of your purchased product provided

(a) we received the product within 15 days of receipt of purchase,

(b) items must be in new, unused and resellable condition

(c) all tags must be attached and original packaging must be included.

Partial or no Refund: Any items received between 15 - 22 days after the receipt of purchase will be issued a full/partial refund. A 10% fees is added if the return has been initiated after 15 days of receipt of the package and will be deducted from the final refund. Items received later than 22 days will not be eligible for return or refund. In case of an incorrect delivery and/or unintentional purchase buyer does not have the right to claim for either a return or refund.

Shipping cost on returns: All returns are Free and we send a prepaid return shipping label. We will send a return label via email, however, the final refund will be only issued once the package has been approved after inspection at our warehouse.

Damaged/Used/Defective Products: It is buyer’s responsibility to ensure we get the product in re-sellable condition. In case of receiving damaged/defective/used products as return we reserve the right to annul the return claim whilst keeping the full price of the sold product.

Wrong/Damaged Item Delivery: In cases when the received item is not as described on our store or is damaged during transit. The buyer is eligible for free returns and full refund within 15 days return window.


Instruction for preparing the return

Please keep in mind the following things while preparing your return:

Securely pack your return merchandise to protect it from damage during shipping.

Please use our provided return label, as packages sent without our return label will be refused and ineligible for refund or store credit. 

Our support team will send you detailed instructions about dropping your package to your nearest UPS/USPS office.

For cancelling your order, you should email to [email protected] within 24 hours of placing the order. All orders are shipped in 24 hours time and once shipped, it is has not possible to cancel the order. In cases the cancellation is received after 24 hours and package has been shipped, the buyer will be charged a restocking fees and return shipping fees @ 25% of order total or $15 whichever is larger.


For any queries related to your orders please feel free to contact our 24/7 customer support team via email. [email protected] or you can use the LiveChat option on our store front as well.

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15 Days Returns, Please read our Return Policy

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For Technical Advice & Product Sales Questions, email Us: [email protected]

  • Brand: KOHLER
  • Product Code: K-5871-5UA3-0
  • Availability: In Stock
    Unit Type: piece
    Qty: 100
  • $1,011.38
  • $783.84