San Souci Comfort Height One-Piece Elongated-Front 1.28 GPF Toilet with AquaPiston Left Hand Lever

The San Souci one-piece toilet offers a sleek, contemporary design with a convenient chair-like height and elongated bowl for comfortable use. This toilet features innovative AquaPiston technology, a patented flush engine that delivers a fast, powerful, and virtually plug-free flush. A 1.28-gallon flush provides significant water savings of up to 16,500 gallons per year, compared to a 3.5-gallon toilet, without sacrificing performance.

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Care and Cleaning

  • Features

    Whats in the Box

    • K-5172 One-Piece Toilet
    • K-4008 Reveal Quiet-Close Toilet Seat
    • Tank cover, Trip lever, Bolt cap accessory pack, and tank accessory pack
    • Installation Instructions


    • One-piece toilets integrate the tank and bowl into a seamless, easy-to-clean design
    • Compact elongated bowl offers added comfort while occupying the same space as a round-front bowl
    • Low-profile design
    • Comfort Height®�feature offers chair-height seating that makes sitting down and standing up easier for most adults
    • 1.28 gallons per flush (gpf)
    • Concealed trapway and Clean Caps®�facilitate easier cleaning and enhanced design
    • Includes K-4008 Reveal®�Quiet-Close™�with Grip-Tight seat
    • Standard left-hand trip lever included
    • Standard 12-inch rough-in
    • Supply line not included


    • ASME: A112.19.2
    • CSA: B45.1, B651
    • ANSI: A117.1
    • WaterSense
    • ADA Compliant

    Flush Technology

    • AquaPiston canister allows water to flow into the bowl from all sides (360 degrees), increasing the power and effectiveness of the flush
    • Flush valve's 3:2 ratio harnesses the natural force of gravity and optimizes flush performance
    • Single-flush gravity uses the force of gravity and a precision-engineered tank, bowl, and trapway to create a strong siphon during flushing
    • Durable canister design has 90% less exposed seal material than a 3-inch flapper, for leak-free performance
    • Light-touch canister flush requires a lower actuation force than a flapper

    Recommended Accessories

    • K-75796: Cachet Nightlight Quite Close Elongated Toilet Seat
    • K-4108: C3-230 Elongated Bidet Washing Toilet Seat
    • K-9171-L: Trip Lever For K-5172

    Similar Models

    • K-5172-RA: 1.28 GPF San Souci One Piece Elongated Toilet Right Hand Trip Lever
    • K-4000: 1.28 GPF San Souci Touchless One Piece Elongated Toilet
    • K-8687: 1.28 GPF San Souci One Piece Elongated Toilet With PureFresh Toilet Seat
    • K-4007: 1.28 GPF San Souci One Piece Elongated Toilet With AquaPiston Flush