By Caleb MorganUpdated November 2026
Kohler bath faucets are built to last for many years, but cartridges wear, seals harden and diverters get stuck with mineral deposits. Finding the right kohler bath faucet repair part is mostly a matter of identifying your model and the failing component. This list compares six Amazon listings covering genuine Kohler valve repair kits, a pressure balance valve kit, a niedecken-style repair kit, a general-purpose Kohler replacement part, and two universal tub spout diverter kits. The criteria were specification clarity, whether the listing is genuine Kohler or a clearly described compatible part, the type of fault each kit addresses, and patterns in owner feedback about fit and included hardware.
Our top picks at a glance
- 1
TOP CHOICEBest overallKOHLER Genuine Part Plumbing Fixture Repair SuppliesView on Amazon - 2
TOP CHOICEBest for pressure balance valvesKohler GP76851 Repair Kit for Single-Handle Pressure Balance ValveView on Amazon - 3
TOP CHOICEBest for tub spout diverter leaksEnhon 2 Set Tub Spout Diverter Repair Kit (Brushed Nickel, Classic)View on Amazon - 4
Best for Niedecken-style faucetsKOHLER GP30090 Niedecken Repair KitView on Amazon - 5
Best budget pickKohler 75740 Plumbing Fixture Genuine Repair PartView on Amazon - 6
Best universal diverter optionShower Diverter Repair Kit, 2 Valve Stems, 2 Seals and Diverter GatesView on Amazon
Note: none of these products were installed or tested by our team. Descriptions reflect manufacturer and listing information and common owner reports.
Our Top Picks
| Product | Best for | Key feature |
|---|---|---|
| KOHLER Genuine Part Plumbing Fixture Repair Supplies | Owners who want an original Kohler component | Genuine manufacturer part |
| Kohler GP76851 Repair Kit for Single-Handle Pressure Balance Valve | Single-handle pressure balance valves | Kit matched to a specific valve type |
| Enhon 2 Set Tub Spout Diverter Repair Kit (Brushed Nickel) | Diverter leaks at the tub spout | Two sets of stems, seals and gates |
| KOHLER GP30090 Niedecken Repair Kit | Niedecken-style bath faucets | Kohler-branded kit for this design |
| Kohler 75740 Plumbing Fixture Genuine Repair Part | Simple, single-part replacements | Lower-cost genuine part option |
| Shower Diverter Repair Kit, 2 Valve Stems, 2 Seals and Diverter Gates | Universal diverter replacement | Includes stems, seals and gates |
KOHLER Genuine Part Plumbing Fixture Repair Supplies
KOHLER Genuine Part Plumbing Fixture Repair Supplies
Best for: Owners who want an original Kohler component and a clear match to their existing faucet.
This is a good starting point when you have identified a specific worn part and want to avoid compatibility guesswork. Genuine Kohler parts are generally the safest route when a cartridge or valve body is involved.
Key specs
- Genuine KOHLER manufacturer part
- Designed for KOHLER plumbing fixtures
- Sold as a repair supply for specific fixture components
Pros
- Original manufacturer part, which reduces fit problems
- Easy to cross-check against the part number on your faucet
- Consistent with Kohler warranty expectations
Cons
- You must confirm the exact part number before ordering
- Not a full kit, so extra seals may need separate purchase
Bottom line: Best for owners who have pinpointed the failed component and want a genuine Kohler replacement.
Kohler GP76851 Repair Kit for Single-Handle Pressure Balance Valve
Kohler GP76851 Repair Kit for Single-Handle Pressure Balance Valve
Best for: Single-handle pressure balance valves that have started to leak, surge or run hot and cold unevenly.
Pressure balance valves rely on internal seals and a balancing piston. When water temperature jumps or the handle feels loose, this type of kit targets those internal parts.
Key specs
- Kit designed for single-handle pressure balance valves
- Kohler part number GP76851 as listed
Pros
- Matched to a specific valve style rather than a generic fit
- Addresses the internal parts that typically fail first
- Kohler branding helps with identification
Cons
- Only useful if your faucet is a pressure balance design
- Requires shutting off water and removing the handle to install
Bottom line: Pick this if your single-handle bath faucet is a pressure balance model and the problem is internal leaking or temperature instability.
Enhon 2 Set Tub Spout Diverter Repair Kit (Brushed Nickel, Classic)
Includes 2 x Diverter Valve Stems, 2 x Cup Seals and 2 x Gates, Bathroom Shower Bathtub Leaky Faucet Repair Replacement Parts Enhon 2 Set Tub Spout Diverter Repair Kit (Brushed Nickel, Classic)
Best for: Tub spout diverter leaks, where water keeps coming out of the spout while the shower is running.
A leaking diverter is one of the most common bath faucet complaints. The listing describes two complete sets of parts, which can cover a second bathroom or a spare.
Key specs
- Includes 2 diverter valve stems
- Includes 2 cup seals
- Includes 2 gates
- Brushed nickel finish, classic style
Pros
- Covers the three parts most often responsible for diverter leaks
- Two sets offer a spare
- Finish option matches many existing tub spouts
Cons
- Universal fit means you must confirm the diverter style before buying
- Finish may not match every Kohler trim
Bottom line: A practical choice for owners whose tub spout is leaking through the diverter and who want replacement stems, seals and gates on hand.
KOHLER GP30090 Niedecken Repair Kit
KOHLER GENUINE PART GP30090 NIEDECKEN REPAIR KIT , Black
Best for: Owners of Niedecken-style bath faucets who need a Kohler-branded repair kit for that design.
Niedecken is a specific Kohler faucet design, and parts are not always interchangeable with other styles. A dedicated kit reduces the risk of mismatched components.
Key specs
- Kohler part number GP30090 as listed
- Repair kit for Niedecken faucet design
- Black finish as listed
Pros
- Designed for a specific faucet family
- Kohler-branded, which simplifies part identification
- Clear match when you have a Niedecken model number
Cons
- Limited use outside Niedecken faucets
- Confirm finish and model before ordering
Bottom line: Only the right choice if your bath faucet is a Niedecken design. Verify the model first.
Kohler 75740 Plumbing Fixture Genuine Repair Part
KOHLER 75740 Plumbing Fixture Genuine Repair Part, Unfinished
Best for: Simple, single-component replacements when you already know exactly which part has failed.
When a single worn component is the only issue, a genuine single part is often more economical than a full kit and avoids replacing parts that still work.
Key specs
- Genuine Kohler plumbing fixture repair part
- Listed as unfinished
- Kohler part number 75740 as listed
Pros
- Genuine Kohler component
- Good for targeted replacement
- Budget-friendly compared with complete kits
Cons
- Unfinished listing may require matching finish separately
- Requires confident diagnosis of the failed part
Bottom line: A budget-minded choice for owners who have pinpointed one failing part and do not need a full kit.
Shower Diverter Repair Kit, 2 Valve Stems, 2 Seals and Diverter Gates
Shower Diverter Repair Kit, Leaky Bathtub Faucet Replacement Parts, Bathtub Spout for Fixing 2pcs Tub Spout Diverter Repair Kit, 2 Valve Stems, 2 Seals & Diverter Gates
Best for: Universal replacement of a worn tub spout diverter when the original brand is unknown or discontinued.
Universal diverter kits are useful when the faucet is older or the manufacturer is unclear. The listing includes the three core diverter components.
Key specs
- 2 valve stems included
- 2 seals included
- Diverter gates included
Pros
- Covers stems, seals and gates in one purchase
- Useful for older or unidentified diverters
- Works as a general leak-repair kit
Cons
- Not Kohler-branded, so fit must be verified
- Finish and thread size may not match every Kohler spout
Bottom line: Suitable for owners who want a universal diverter fix and are comfortable confirming dimensions before installation.
Buying Guide
Identify Your Faucet Model and Part Number
Kohler stamps model and part numbers on the valve body, under the escutcheon, or in the installation manual. Matching the part number is the single most effective way to avoid wrong-part returns. Look for series names such as Artifacts, Purist, Devonshire or Niedecken to narrow the search.
Good picks for this: KOHLER Genuine Part Plumbing Fixture Repair Supplies, Kohler GP30090 Niedecken Repair Kit
Know Which Type of Valve You Have
Kohler bath faucets use several valve types, including pressure balance, thermostatic and diverter designs. A pressure balance valve needs an internal kit, while a diverter leak often requires only stems, seals and gates. Check whether the handle controls one function or two before buying.
Good picks for this: Kohler GP76851 Repair Kit, Enhon 2 Set Tub Spout Diverter Repair Kit
Genuine Versus Universal Parts
Genuine Kohler parts are the lowest-risk option for cartridges and valve bodies because dimensions are guaranteed to match. Universal kits can work well for diverters and common seals, but they require measuring stem length, thread size and gate shape before installing.
Good picks for this: Kohler 75740 Plumbing Fixture Genuine Repair Part, Shower Diverter Repair Kit
Kit Contents and Completeness
Some listings sell a single component while others bundle stems, seals and gates. A complete kit saves a second trip if one seal has also worn. Count the included parts against what you expect to replace. Two-set kits can be useful as spares.
Good picks for this: Enhon 2 Set Tub Spout Diverter Repair Kit, Shower Diverter Repair Kit
Finish and Appearance
Finish mismatches are a common complaint when replacing diverter parts or trim. Confirm whether your faucet is brushed nickel, chrome, black or unfinished, and check whether the part will be visible. Unfinished parts may need separate plating or painting to match.
Good picks for this: Enhon 2 Set Tub Spout Diverter Repair Kit, KOHLER GP30090 Niedecken Repair Kit
Use Case and Frequency of Wear
A diverter that sticks daily wears differently from a faucet used occasionally. Households with hard water often see faster wear on seals and diverter gates due to mineral buildup. Choose a kit that addresses the most likely failure point for your water conditions.
Good picks for this: Shower Diverter Repair Kit, KOHLER Genuine Part Plumbing Fixture Repair Supplies
Care and Maintenance After Repair
Flush the supply lines before reinstalling a cartridge or valve, and clean diverter openings with a soft brush and white vinegar to remove scale. Lubricate O-rings with plumber’s silicone grease, never petroleum-based products that can degrade rubber. Periodic cleaning extends the life of any replacement part.
Good picks for this: Kohler GP76851 Repair Kit, Kohler 75740 Plumbing Fixture Genuine Repair Part
FAQ
How do I find the right Kohler bath faucet repair part?
Locate the model or part number on the valve body or in the installation manual, then compare it with the part number listed on the product page. If you cannot find a number, photograph the valve and note the handle style and series name before ordering.
What is the most common cause of a leaking Kohler bath faucet?
Worn cartridge seals, O-rings and diverter gates are the most frequent causes. Mineral deposits can also prevent a diverter from sealing fully, which causes water to leak from the tub spout while showering.
Can I use a universal diverter kit on a Kohler tub?
Often yes, but you must measure the stem length, thread size and gate shape first. Universal kits are a reasonable option when a genuine part is discontinued, but a Kohler-branded part is the lower-risk choice when available.
Do I need to shut off the water before repairing a bath faucet?
Yes. Shut off the water supply at the stop valves or the main shutoff, then open the faucet briefly to release residual pressure. This prevents water from spraying during disassembly.
Why does my Kohler pressure balance faucet run hot and cold unevenly?
Internal seals or the balancing piston may be worn, causing pressure changes to affect the temperature. A pressure balance repair kit designed for your valve type is usually the correct fix. If you are unsure, consult a licensed plumber.
Is it worth replacing the whole faucet instead of repairing it?
If the valve body is cracked, corroded or the faucet has been repaired several times without success, replacement may be more practical. For a single worn seal or diverter, a repair part is usually the efficient choice.
Conclusion
For most owners, the best starting point is a genuine Kohler part once the failing component is identified, since it reduces fit risk. The Kohler GP76851 kit suits single-handle pressure balance valves, the Kohler GP30090 kit fits Niedecken designs, and the Enhon two-set diverter kit is a practical choice for tub spout leaks. Universal diverter kits work when the brand is unknown, provided you confirm dimensions. Match the part to your valve type and model number, and consult a licensed plumber if the internal fault is unclear.
Sources
- Water conservation and fixture leak guidance for household plumbing (epa.gov)
- Information on faucet efficiency and reducing household water waste (energy.gov)
- Plumbing standards and product certification information for fixtures and valves
Related reading
- Kohler Purist Bath Faucet: Install, Fix and Maintain It Step by Step
- Kohler Faucet Valve Repair: 4 Best Kits Compared (2026)
- Kohler Bath Faucet Parts: Identify and Replace the Right Ones
About Caleb Morgan
Caleb Morgan is part of our editorial team and reviews and edits our kitchen faucets & sinks guides, checking product details against manufacturer specifications and owner feedback.
