This product has additional required/recommended options. To configure, add to your cart.
Toilet Seat Recommended
Angle Supply Recommended
Wax Ring Kit Required
- Two-piece configuration allows for easier access to the area around the toilet
- Elongated bowl offers comfort and convenience, extending out an extra 1-1/2" compared to a round configuration
- Covered under Kohler's 1 year limited warranty
- Constructed of vitreous china
- Installs in a floor mount configuration
- Class Five flushing technology
- WaterSense certified - toilet uses 20% less water than the current standard while still maintaining superior performance
- Seat and cover not included with this model
Product Technologies / Benefits:
- Class Five: The Class Five siphon jet flushing system is designed for high-powered bulk flushing performance. Water flow is maximized with a larger than standard flush valve, which allows rapid release of water, and direct fed jets that quickly clear the bowl.
- WaterSense Certified Product: To help make a difference on a global scale and to further its role as an industry leader in eco-performance practices, Kohler has established partnerships with a number of environmental organizations, including WaterSense. Many Kohler faucets and toilets are equipped with low-flow technology - they use less water, while continuing to meet superior performance standards.
- Overall Height: 29-1/4" (measured from bottom of base to top of tank)
- Overall Depth: 30" (measured from back of tank to front of rim)
- Overall Width: 18" (measured from rightmost to leftmost edge of toilet)
- Bowl Height: 14-1/2" (measured from floor to bowl rim)
- Flow Rate: 1.28 GPF (gallons per flush)
- Water Area: 11-1/4" x 8-1/4" (inner rim dimensions of bowl, length x width)
- Water Depth (from Rim): 5-1/4"
- Tank Width: 18" (measured from leftmost to rightmost edge of tank)
- Tank Depth: 8-1/2" (measured from back edge to front edge of tank)
- Trapway (Discharge Passageway) Size: 2-1/8"
- Distance Between Toilet Seat Installation Holes: 5-1/2"
- Rough-In: 12"
Additional Kohler Links
This Kohler item can also be referenced by the following color/finish specific model #:
- Kohler K-3998-47
- Kohler K-3998-96
- Kohler K-3998-7*
- Kohler K-3998-NY*
- Kohler K-3998-95*
- Kohler K-3998-G9*
- Kohler K-3998-0
*Discontinued model or finish
Discover the best online deals for the K-3998 and everything else for your home from the leading online home improvement store.
We're committed to providing you with the best assortment of Kohler products with over 400 warehouses across the country.
How to remove and install a ToiletIf you have been considering replacing your toilet, yet are wondering how complicated of a job this is? Take a moment and we'll show you just how simple this job can actually be.
The Kohler Wellworth Toilet, new style and a more powerful flushKohler re-introduces the Wellworth Toilet. With a new, updated design, and a high performance, highly efficient AquaPiston cannister flush. The Kohler Wellworth is a virtually plug free toilet with best in class / best in price performance.