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Couture Toilet Repair Parts
By Kohler

Finding replacement parts for your Kohler Couture toilet can be time consuming, but we can make it easier to find what you need by having them all in one place. Whether you need flappers or gaskets, or even a flush valve kit, we've got just what you've been looking for. We here at PlumbingSupply.com® are pleased to offer these and many other Kohler replacement parts.

Kohler Couture toilet - K-3470K-3470
Kohler Couture toilet - K-3472K-3472
Kohler Couture toilet - K-3477K-3477

Kohler Couture Toilet Replacement Parts
Model # K-3470 - Tank # K-4501

Couture Toilet repair parts diagram

Item # Part # Description Price & Quantity
1 30654 Fill Valve - Replaced by 400A $10.92 Enter a quantity and
2 30373 Repair Kit (for old 30654 valve) - Replaced by "OEM" - includes plunger assembly 30197 $14.22
385 Cap Assembly - for 400A fill valve $5.59 Enter a quantity and
3 30197 Plunger Assembly - for old 30654 fill valve $8.01 Enter a quantity and
4 52156 Refill Tube $2.24 Enter a quantity and
5 52155 Float Rod - 8" length - Replaced by "will fit" version (view more sizes) $2.25 Enter a quantity and
6 51162 Float Ball - Replaced by "will fit" version $3.52 Enter a quantity and
7 30651 Flush Valve Assembly - Replaced by "will fit" flush valve (10-1/2" tall) - will need to be cut down to original valve height - Altered valves are non-returnable $9.19 Enter a quantity and
8 55477 Flapper (for old 30651 flush valve) - Replaced by GP87449 $8.68
GKF01 Gasket ONLY - fits original 55477 flapper $4.81 Enter a quantity and
9 53154 Rubber Washer - Replaced by GP1145626 $3.73 Enter a quantity and
10 51487 Tank to Bowl Gasket & Bolt Kit - includes gasket (1), washers (3), 5/16" bolts (3) and nuts (3) $13.84 Enter a quantity and
11 50752 Friction Ring For Flush Valve $1.53 Enter a quantity and
12 50751 Lock Nut $4.44 Enter a quantity and
13 30419 Tank to Bowl Bolt Kit - includes 5/16" bolts (3), metal washers (3), and nuts (3) $10.97 Enter a quantity and
14 30440 Front Mount Trip Lever - Chrome Discontinued
15 52048 Bolt Caps (2) - White (view more color options) $5.91 Enter a quantity and
Toilet Seat 1200E3 Premium Bemis "Will Fit" Elongated Front Seat - White (view more color options) $56.10 Enter a quantity and

Not sure which model toilet you have? Try looking under the toilet tank lid or inside of the toilet tank.


Kohler Couture Toilet Replacement Parts
Models # K-3471, K-3472, K-3477, K-3478, K-3479 & K-3480 - Tanks # K-4591 & K-4605

Couture toilet repair parts

Item # Part # Description Price & Quantity
1 75422 Fill Valve - Replaced by GP1138930 - includes color coded flow restrictors $23.52
GP1083167 Class 5 Fill Valve (refill tube not included - order separately below) $21.42 Enter a quantity and
2 1057940 Top Assembly - for GP1083167 and GP1138930 fill valves $5.75 Enter a quantity and
3 51284 Refill Tube - for 75422 fill valve - Replaced by 39236 (includes clip) $2.96
52156 Refill Tube - for GP1138930 fill valve $2.24
1033209 Refill Tube - for GP1083167 fill valve $2.29 Enter a quantity and
4 51261 Refill Tube Clip $3.21 Enter a quantity and
5 83991 Flush Valve - Replaced by 1003068 - includes flapper, flush valve gasket, tank gasket $22.69 Enter a quantity and
6 1006958 Flapper - Replaced by GP85160 $10.96 Enter a quantity and
7 53154 Rubber Washer - Replaced by GP1145626 $3.73 Enter a quantity and
8 51487 Tank to Bowl Gasket & Bolt Kit - includes gasket (1), washers (3), 5/16" bolts (3) and nuts (3) $13.84 Enter a quantity and
9 50752 Friction Ring For Flush Valve $1.53 Enter a quantity and
10 50751 Lock Nut for Flush Valve $4.44 Enter a quantity and
11 30419 Tank to Bowl Bolt Kit - includes 5/16" bolts (3), metal washers (3), and nuts (3) $10.97 Enter a quantity and
12 30440 Front Mount Trip Lever - Chrome Discontinued
13 52048 Bolt Caps (2) - White (view more color options) $5.91 Enter a quantity and
Toilet Seat 1200E3 Premium Bemis "Will Fit" Elongated Front Seat - White (view more color options) $56.10 Enter a quantity and
If your existing fill valve stem is GRAY with a small insert, use GP1138930. If your existing fill valve stem is BLACK with a large insert, use GP1083167. View this fill valve comparison to help you choose

Not sure which model toilet you have? Try looking under the toilet tank lid or inside of the toilet tank.


Kohler Couture Toilet Replacement Parts
Dual Flush Model # K-3471-K / Tank # K-4591-K

Couture dual flush toilet parts diagram

Item # Part # Description Price & Quantity
1 84150 Fill Valve - Replaced by GP1138930 - includes color coded flow restrictors $23.52
GP1083167 Class 5 Fill Valve (refill tube not included - order separately below) $21.42 Enter a quantity and
2 1057940 Top Assembly - for GP1083167 and GP1138930 fill valves $5.75 Enter a quantity and
3 52156 Refill Tube - for GP1138930 fill valve $2.24
1033209 Refill Tube - for GP1083167 fill valve $2.29 Enter a quantity and
4 51261 Refill Tube Clip $3.21 Enter a quantity and
5 84234 Dual Flush Valve (for toilets that have insuliner tank liners) Discontinued
87 "Will Fit" Flush Valve Assembly - includes flapper (NOT dual flush) - tank to bowl gasket with bolt kit and friction ring sold separately below $9.19 Enter a quantity and
6 84355 Dual Flush Flapper Discontinued
84354 Dual Flush Flapper Discontinued
7 53154 Rubber Washer - Replaced by GP1145626 $3.73 Enter a quantity and
8 51487 Tank to Bowl Gasket & Bolt Kit - includes gasket (1), washers (3), 5/16" bolts (3) and nuts (3) $13.84 Enter a quantity and
9 50752 Friction Ring For Flush Valve $1.53 Enter a quantity and
10 50751 Lock Nut for Flush Valve $4.44 Enter a quantity and
11 30419 Tank to Bowl Bolt Kit - includes 5/16" bolts (3), metal washers (3), and nuts (3) $10.97 Enter a quantity and
12 30440 Front Mount Trip Lever - Chrome Discontinued
13 52048 Bolt Caps (2) - White (view more color options) $5.91 Enter a quantity and
Toilet Seat 1200E3 Premium Bemis "Will Fit" Elongated Front Seat - White (view more color options) $56.10 Enter a quantity and
If your existing fill valve stem is GRAY with a small insert, use GP1138930. If your existing fill valve stem is BLACK with a large insert, use GP1083167. View this fill valve comparison to help you choose

Related Items & Information


Frequently Asked Questions

Q. "The GP1138930 comes with some colored inserts. What are those for?"
A.Since the Kohler GP1138930 is a replacement for a variety of fill valves, it comes with a selection of color coded flow restrictors. To select the correct insert, check your old fill valve (the one you're replacing) and use the same color restrictor on your new GP1138930 fill valve. See example of the four included restrictors.

Q. "I installed a new fill valve and my new valve comes on (and then goes off) for a few seconds about once per hour?"
A. This could be caused by many things. The most common is with a Fluidmaster 400. This is a great valve but be sure to install the 1/4" tube per their instructions. Use the clip that comes with it and do not just stick it into the overflow tube or it will go on and off every so often by itself. If that isn't it, take some food coloring and place it in your tank. Wait a few hours and if some of the color has gone into the bowl then you probably need a new flapper.

Q. "What is the difference between "OEM" and "will-fit" parts? And what does OEM mean anyway?"
A. "OEM" stands for "Original Equipment Manufacturer". This refers to anything from the original manufacturer that is sold to a second company to use in production of that second company's product. In other words, many toilet manufacturers outsource for the internal working parts of the toilet, such as the fill valves, flush valves, or flappers. When this happens, they have the opportunity to use an existing part, or to spec something for the specific toilet. When the toilet manufacturer chooses to use an existing part, the manufacturer of the part can still sell that piece under their own name. If the toilet manufacturer chooses to spec something for the specific toilet, the part manufacturer can then only provide that part to the toilet manufacturer. What this means for you is that you can sometimes get the *exact same part* (by the original manufacturer of the OEM part), but under another name and at a better cost! So when your toilet's internal working parts need to be replaced, you may have the option to use either the "OEM" part number or use the "will-fit" part number to order what you need. Please note that only some "will-fit" items are manufactured by the OEM manufacturer. If this is essential to your repair, please feel free to contact us and we will be happy to check for you.

Q. "How do I find my Kohler model number?"
A. For our customers' convenience, we list both the model number and the tank number of the Kohler toilets we offer parts for. If you already know your model number, that's great - but oftentimes this information won't be available to you. What you'll need to do then is look for the TANK number, which is right where you'd expect it to be on the inside of your toilet tank. Grab a flashlight, carefully remove your tank lid, place your lid somewhere safe, and look around inside your toilet tank for a 4-digit number beginning with either a 3 or a 4. Certain specialty toilets may have a 5-digit number starting with a 1. The number will be either molded into the porcelain or stamped on in blue or black ink. This is your tank number and you can use it to find the parts you need to fix your toilet.

Kohler toilet tank number molded into porcelain tank
Kohler toilet tank number stamped onto side of tank

Q. "There are letters and/or numbers after the model number inside my Kohler toilet tank - what do those mean?"
A. Kohler offers many variations of almost all their toilet models, and has experimented in the past with many different features. Typically, numbers (or a single letter/number combination like K4 or Y2) after the 4- or 5-digit model number indicate the color code for your toilet. If your model number is followed by letters, those usually have different meanings to indicate the features of your toilet or will indicate that you have a specialty Artist Edition toilet.


Code Meaning
AA Water-Guard toilet flushing system - Old flush system that has long been discontinued
EL Toilet with Elongated Bowl
K Eco Lite tank
L Bedpan lugs or a Pressure Lite flush system - Both older features that have been discontinued
RA Tank with RIGHT side trip lever
T Tank locking system (vandal-resistant feature usually on commercial toilets)
U Insuliner® lined toilet tank
UR Insuliner® lined toilet tank with RIGHT side trip lever
X Peacekeeper® seat actuated flushing system - Discontinued
Need a new toilet seat? We offer color-matching toilet seats for almost all the Kohler colors below!
Code Color Name Code Color Name Code Color Name
0 White 02 Spruce Green 03 Lavender
04 Suez Tan 06 Skylight 07 Black
08 Cerulean Blue 10 Peachblow 12 Jersey Cream
17 Teal 18 Sunrise 21 Avocado
24 Expresso 31 Harvest Gold 32 New Orleans Blue
33 Mexican Sand 34 Fresh Green 35 Pink Champagne
40 Parchment 41 Country Grey 42 Aspen Green
44 Swiss Chocolate 45 Wild Rose 47 Almond
49 French Vanilla 52 Navy 53 Raspberry Puree
55 Innocent Blush 56 Tender Grey 58 Thunder Grey
68 Heron Blue 71 Seafoam Green 85 Merlot
89 Desert Bloom 95 Ice Grey 96 Biscuit
97 Timberline 98 Chamois G9 Sandbar
K4 Cashmere NG Tea Green S1 Biscuit Satin
S2 White Satin W2 Earthen White Y2 Sunlight

Have questions about toilet parts or toilet repair?

Toilet Repair Information & FAQs


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