
Features
•
Two-piece design.
•
Round-front bowl offers an ideal solution for smaller
bathrooms and powder rooms.
•
Right-hand nested trip lever offers a choice of 1.1 or 1.6
gallons per flush (gpf).
•
2-1/8" (54 mm) fully glazed trapway.
•
Coordinates with other products in the Wellworth collection.
•
Combination consists of the K-4197 bowl and the K-4458-RA
tank.
Technology
•
Dual-flush technology allows you to choose between a full or
partial flush.
Installation
•
Seat sold separately.
•
Standard 12" (305 mm) rough-in.
•
Three-bolt quick-connect installation.
Water Conservation & Rebates
•
Eligible for consumer rebates in some municipalities.
Recommended Products/Accessories
K-4639 Cachet® Quiet-Close™ Round-front toilet seat
K-5589 Purefresh® Round-Front Toilet Seat
K-76923 Puretide® Quiet-Close™ Round-front manual bidet
toilet seat
K-5420 Low-Profile Bolt Caps
K-9236 Trip Lever Dual Flush
1023457 Wax Ring/Hardware Kit
1265114 Connector Hose
K-23726 Drain treatment
Included Components
Product consists of:
4458-RA
4197
9236
Additional Components:
Bolt cap accessory pack
Bowl
Tank
Tank cover
Trip lever
Codes/Standards
ASME A112.19.2/CSA B45.1
ASME A112.19.14
EPA WaterSense
®
KOHLER® Toilets and Seats Limited
Warranty
See website for detailed warranty information.
Available Colors/Finishes
Color tiles intended for reference only.
Color Code Description
0 White
96 Biscuit
Wellworth
®
Two-piece round-front dual-flush toilet
K-3987-RA
1-800-4KOHLER (1-800-456-4537)
Kohler Co. reserves the right to make revisions without notice to product specifications.
For the most current Specification Sheet, go to www.kohler.com.
5-15-2022 02:27 - US/CA

Wellworth
27-3/4" (705 mm)
18"
(457 mm)
L of Outlet
C
Front of Bowl
3/8" NPT Supply
12" (305 mm)
4-1/8" (105 mm)
3/4"
(19 mm)
2-3/4"
(70 mm)
8-1/2"
(216 mm)
29-1/4"
(743 mm)
14-1/2"
(368 mm)
10-1/8"
(257 mm)
10-1/4"
(260 mm)
14-3/8"
(365 mm)
15"
(381 mm)
5"
(127 mm)
Do not use a
double sanitary tee.
Use a 45° double
wye fitting.
For Back-to-Back Toilet Installations
Technical Information
All product dimensions are nominal.
Toilet type: Two-piece, Floor-mount
Waste Outlet: Floor
Bowl shape: Round-front
Flush type: Class Five
®
Trap passageway: 2-1/8" (54 mm)
Water Consumption
Full: 1.6 gpf (6 lpf)
Reduced: 1.1 gpf (4.3 lpf)
Water surface size: 10-1/2" x 7-3/4" (267 mm x 197 mm)
Rim to water
surface:
5-1/4" (133 mm)
Rough-in: 12" (305 mm)
Seat-mounting
holes:
5-1/2" (140 mm)
Notes
Install this product according to the installation
instructions.
For back-to-back toilet installations: Use only a
45° double wye fitting.
®
Two-piece round-front dual-flush toilet
K-3987-RA
1-800-4KOHLER (1-800-456-4537)
Kohler Co. reserves the right to make revisions without notice to product specifications.
For the most current Specification Sheet, go to www.kohler.com.
5-15-2022 02:27 - US/CA