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Rialto Toilet Repair Parts
By Kohler

Looking for replacement or repair parts for your Rialto toilet? We have just what you're looking for at PlumbingSupply.com®! Kohler toilets should last for many years, and with proper care they will. Replace your worn out flush valve or flapper with one from our selection below. Looking for additional Kohler parts? Click here.

Kohler Rialto One-Piece Toilet - K-3402K-3402
Kohler Rialto Toilet - K-3386K-3386

Kohler Toilet Replacement Parts for the Rialto Series
Model # K-3402

Rialto Series Toilet by Kohler

Item # Part # Description Price & Quantity
1 84503 Flush Valve and Cap/Plunger Repair Kit - Includes top assembly (42482), plunger assembly (42393), flush valve kit (83650) $60.60 Enter a quantity and
2 84499 1B1X Conversion Kit - Includes flush valve (83650), float ball (42753), float rods (42752 and 54642), nut (41633), top assembly (42482), plunger assembly (42393) & washers, taper washer (42470), screw (84441/31490), body (42377), float assembly (42381), locknut (42396), washer (42398), nut (42397), rim hose (42452) $101.54
1B1X "Will Fit" Brass body Fill Valve Assembly & Diverter
Includes Brass 1B1X fill valve, refill tube, brass float rod, black plastic float ball, diverter assembly and mounting hardware (washers, nuts & screws) - without flapper and flush valve
$83.80
1B1X 1B1X Plastic Fill Valve WITH Diverter Assembly - Includes Fill Tube, Diverter Assembly, Brass Float Rod, & Plastic Float Ball - WITHOUT flush valve and flapper $73.03
1B1X OEM Fill Valve (ballcock) WITHOUT diverter assembly - includes plastic fill valve, clear vinyl outlet tube, slip joint nut and washer, friction ring, shank nut and washer, and float rod   - float ball sold separately
Replacement for fill valve and diverter from 84499 kit, no diverter needed
- does not include flush valve and flapper
$55.60
1B1X-WF "Will-Fit" Replacement Fill Valve ONLY
Includes: Plastic ballcock/fill valve, refill tube, brass float rod and mounting hardware (washers, nuts and screws) - WITHOUT float ball & diverter assembly
Replacement for fill valve and diverter from 84499 kit, no diverter needed
- does not include flush valve and flapper
$49.13 Enter a quantity and
2a 42452 Rim Hose For 1B1X Conversion Kit
- Note: rim hose is included with 1B1X Conversion Kit
$4.48 Enter a quantity and
3 83650 Flush Valve Kit - Includes flush valve (83650), flapper (83064), washer (53410), screws (61052), mounting lugs (87377) - Compare old style and new style flush valves

Please Note: If your toilet has a triangle hole in the tank then you must also order the #GP83888 flush valve gasket to be used instead of the red flush valve washer that is included with the #K83650 flush valve. The GP83888 flush valve gasket must be installed with the larger flat surface facing toward the tank (opposite of the way the red gasket is shown on the flush valve.)
$45.60 Enter a quantity and
4 K83064 Flapper (new style) $9.87 Enter a quantity and
5 83095 Flush Valve Kit - Includes flush valve (83095), flapper (83064), flush valve seal (83888)
Compare old style and new style flush valves
$27.10 Enter a quantity and
6 42482 Fill Valve Top Assembly Discontinued
7 42393 Plunger Repair Kit - Replaced by "will fit"
Please Note: Large O-ring may fit tight and may need to be slightly stretched out using both hands (no tools) in order to be installed. Additionally, the 42393 plunger repair kit has been discontinued. The "will fit" replacement plunger is completely round. If your original plunger has a flat edge like this, the replacement plunger will NOT fit with your existing top assembly.
$7.69 Enter a quantity and
8 52048-0 Bolt Cap - White - click here for more color options $5.91 Enter a quantity and
9 42388 Flapper - old style replaced by GP49114 - Replaced by "Will Fit" flapper $8.02 Enter a quantity and
10 42377 Diverter Body for Fill Valve Discontinued
10A 1114276 Diverter Assembly Complete - Includes #42377 diverter body, #31490 screw and #42381 float (screw and float available separately below) Discontinued
11 42381 Float Assembly for Fill Valve $10.67 Enter a quantity and
12 31490 Screw for Fill Valve Float Assembly $1.42 Enter a quantity and
13 42506 Flush Valve Seal (replaced by #83888) $6.94 Enter a quantity and
14 81609 Trip Lever - Chrome $66.72
WF 81609 "Will Fit" toilet trip lever (same as 81609) - Chrome $18.88
81609 Trip Lever - Polished Brass $102.03
81609 Trip Lever - Brushed Nickel $102.87
81609 Trip Lever - Brushed Chrome $102.27 Enter a quantity and
15 83888 Flush Valve Gasket $6.94 Enter a quantity and
Not Shown Float Ball Plastic - "will-fit" - 4" x 5" - fits 1/4"-20 rods $3.40 Enter a quantity and
Not Shown 53410 Washer $4.49 Enter a quantity and
Not Shown GP83888 Flush valve gasket for toilets with triangle hole $6.94 Enter a quantity and

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

Click here for many colored seats that fit Kohler Rialto toilets.


Kohler Toilet Replacement Parts for the Rialto Series
Model # K-3386

Rialto Series Toilet by Kohler

Item # Part # Description Price & Quantity
1 1068030 Fill Valve Assembly $37.34 Enter a quantity and
2 84999 Seat Anchor Kit - tools, replacement anchors and instructions for replacing damaged seat anchors $47.07
HK36 Hardware Kit - for Kohler 1-pc Toilets using the "will fit" Slow Close, Easy Clean toilet seats below - Note: this kit may be needed when seat anchors are installed into the toilet and there is no room or access for the seat nuts/bolts included with seat - view HK36 installation instructions $4.99 Enter a quantity and
3 85114 Trip Lever Assembly - Chrome $21.22
85114-VF Trip Lever - Polished Brass $72.14
85114-BN Trip Lever - Brushed Nickel $78.46
85114-SN Trip Lever - Vibrant Polished Nickel $78.15 Enter a quantity and
4 1078578 Flush Valve Assembly - Includes flapper #1078577 (flapper replaced by GP84995), and Gasket #84676 $19.35 Enter a quantity and
5 84302 Flush Valve Assembly - Includes flapper (84314), gasket (83996) $26.98 Enter a quantity and
6A 1078577 Genuine Kohler Replacement Flapper - (replaced by GP84995) $13.93
2011 "Will-Fit" Replacement Flapper $10.50 Enter a quantity and
6B 84314 Toilet Flapper - Replaced by Kohler OEM #GP1078440 $9.83
2012BP Toilet Flapper - "Will-Fit" $6.94 Enter a quantity and
7 83996 Gasket $5.84 Enter a quantity and
8 1013092 Bolt Caps - White - Click here for more color options $5.91 Enter a quantity and
9 84676 Flush Valve GASKET for 1078578 Flush Valve (#4) $5.56 Enter a quantity and
10 83143 Seal diaphragm for 84681 fill valve $4.38 Enter a quantity and
11 1001958 Seal diaphragm for 1068030 and 10608033 fill valve $4.14 Enter a quantity and
Not Shown 200E3 Premium "Will Fit" Toilet Seat by Bemis - Round Front - White - view more color options $48.80
1200E3 Premium "Will Fit" Toilet Seat by Bemis - Elongated - White - view more color options $53.20 Enter a quantity and

Related Items & Information




Frequently Asked Questions

Q. "How do I adjust the water level for the 84499 conversion kit?"
A. As with any conversion or "will fit" replacement kit, you might need to make slight adjustments for the unit to function exactly like your original valve did. For the 84499 fill valve, you simply turn the adjustment screw counterclockwise to raise the water lever or clockwise to lower the water level. You may need to flush the toilet and keep turning either way until the water level in the tank matches the line on the flush valve overflow tube. If you're not sure where to find the adjustment screw or water level, view our handy parts diagram.

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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