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A bathtub faucet repair kit is usually the fastest way to stop a drip, a sputter or a diverter that refuses to send water up to the showerhead. Most tub faucet problems come down to a worn cartridge, a tired valve stem, a cracked seal or a diverter gate that no longer seats fully. The right kit replaces only the parts that are failing, so you avoid buying a whole new faucet. This list compares five options that cover the most common tub repairs, from diverter parts to universal washer assortments to cartridge kits for single-handle valves. Selection criteria included the part types each kit covers, how clearly the listing identifies compatible fixtures, the number of components included, and the patterns owners tend to report about fit and durability.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Enhon 2 Set Tub Spout Diverter Repair Kit | Tub spouts that won’t divert water to the shower | Two sets of valve stems, cup seals and gates |
| Universal Plumbing Repair Kit with Washers and O-Rings (1075 PCS) | Homeowners who want a broad spare-parts stash | 37 sizes of washers, gaskets and O-rings |
| Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970) | Single-handle Delta tub and shower valves with a drip | Brass cartridge sized for Delta single-handle valves |
| Danco 3-Handle Trim Kit for Gerber (39617) | Three-handle Gerber valves needing new handle trim | Chrome knob handles matched to Gerber 3-handle valves |
| Shower Diverter Repair Kit, Leaky Bathtub Faucet Replacement Parts | Budget-minded diverter and spout leaks | Two valve stems, two seals and two diverter gates |
Enhon 2 Set Tub Spout Diverter Repair Kit
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 (Chrome, Classic)
This kit suits homeowners whose tub spout still runs but water keeps coming out of the spout when the shower is on, or the diverter won’t push water up to the showerhead. Its listing points to chrome, classic-style replacement parts for leaky tub spouts.
Key specs
- Includes 2 diverter valve stems
- Includes 2 cup seals
- Includes 2 gates
- Chrome finish, classic style
Pros
- Two full sets allow a repair on a second spout or a spare on hand.
- Covers the three parts most often worn in a diverter assembly.
- Targeted purpose makes it easy to confirm you need it before buying.
Cons
- Fit depends on matching your existing spout design, so measure or photograph the old parts first.
- Does not include tools or a new spout body if the housing itself is cracked.
Universal Plumbing Repair Kit with Washers and O-Rings (1075 PCS)
Faucet Washers & Sealing Gaskets to Fix Leaky Faucets, Hoses, Spigots, Plumbing Fixtures with Pick Hook 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit & O-Rings
This assortment is aimed at people who want to handle several small leaks around the house, not just the tub. It works well if you have older fixtures where the exact replacement washer is unknown and you need to try several sizes until one seals.
Key specs
- 1075 pieces across 37 sizes
- Covers washers, sealing gaskets and O-rings
- Includes a pick hook for removing old seals
Pros
- Large variety lets you match worn parts by trial fit.
- Useful beyond the tub, for sinks, hoses and spigots.
- The pick hook helps remove old O-rings without scratching seats.
Cons
- Finding the exact size can take time, and many parts will go unused.
- Generic washers are not always a substitute for a cartridge or a valve stem with a machined seat.
Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970)
Faucet Repair Kits, Cartridge Repair Kits, Faucet Cartridges, Single Handle Faucets, Brass/Plastic/Rubber/Steel Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970)
This is the kit to consider when a single-handle Delta valve drips, leaks at the base of the handle or feels stiff to operate. Cartridge replacement is usually the most reliable fix for these symptoms, and this model number is designed for Delta single-handle valves.
Key specs
- Brass cartridge body
- Designed for Delta single-handle faucets, model 86970
- Replaces the internal valve that controls flow and temperature
Pros
- Replacing the cartridge addresses the root cause of most single-handle drips.
- Brass construction is a common choice for durability over plastic alternatives.
- Clear model match simplifies buying.
Cons
- Only suitable for the matching Delta single-handle design; check your valve before ordering.
- Some installs need a cartridge puller or a small amount of valve cleaning.
Danco 3-Handle Trim Kit for Gerber (39617)
Danco 3-Handle Trim Kit for Gerber, Knob Handle, Chrome (39617)
This kit fits homeowners with a three-handle Gerber valve who need replacement knob handles or trim rather than internal parts. It is a cosmetic and functional fix when handles are cracked, loose or no longer match the rest of the bathroom.
Key specs
- Chrome finish
- Knob handle style
- Designed for Gerber three-handle valves, model 39617
Pros
- Restores a worn look without replacing the whole faucet.
- Clear Gerber match reduces guesswork.
- Chrome finish matches most standard bathroom hardware.
Cons
- Handles only; it will not fix a leaking cartridge or stem inside the valve.
- Limited use if your tub valve is not a Gerber three-handle design.
Shower Diverter Repair Kit, Leaky Bathtub Faucet Replacement Parts
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
This kit is for people who want the same core diverter parts as the Enhon set but in a single pack for one spout. It suits a straightforward diverter leak where you just need a matching set of stems, seals and gates.
Key specs
- 2 valve stems
- 2 seals
- 2 diverter gates
- Designed for bathtub spout diverter repair
Pros
- Covers the standard diverter components in one package.
- Simple contents make it easy to check what you received.
- Good match for a common single-spout tub leak.
Cons
- Compatibility varies by brand and spout design, so compare parts before installing.
- Offers no spare set, unlike some larger diverter kits.
Buying Guide
Choosing a bathtub faucet repair kit starts with diagnosing the symptom. A tub spout that keeps dripping when the shower is running points to the diverter. A single-handle valve that leaks behind the handle or drips when closed usually needs a cartridge. A three-handle valve with loose or cracked knobs needs trim or internal stems. Knowing which part is failing saves money and time.
Selection criteria
- Symptom match: Diverter kits fix spout-to-shower switching problems; cartridge kits fix drips at the handle; trim kits fix handles.
- Fixture brand and model: Delta, Gerber and generic diverters often use different dimensions. Note the brand stamped on the valve or handle.
- Parts included: Single-part kits suit a known problem; multi-part kits suit trial fitting or multiple fixtures.
- Material and finish: Brass parts tend to hold up better than plastic under daily hot water use. Chrome finishes match most standard hardware.
Specs to check before ordering
- Model number printed on the old cartridge or on the valve body
- Number of handles on the valve (single or three)
- Diverter type: stem-and-gate or a pop-up style
- Thread size and spout reach if you are replacing the whole spout
Choosing by need
- Water comes out of the spout when the shower is on: Start with a diverter kit.
- Single-handle tub valve drips or feels stiff: Choose a cartridge kit that matches your brand.
- Handles are cracked or mismatched: A trim kit fixes the look without opening the wall.
- Several small leaks or an unknown part size: A universal assortment helps you test sizes.
Things to watch out for
- Shutting off the water supply at the valve or main before disassembly, and placing a towel in the drain to keep small parts from falling in.
- Assuming all cartridges look alike; a similar-looking part from another brand often will not seal correctly.
- Overtightening plastic parts, which can crack housings.
- Replacing parts without checking whether the valve body itself is corroded, which may require professional service. For water-pressure or wall-access concerns, consult a licensed plumber.
For brand-specific guidance, see Delta Faucet Repair Kits: How to Choose and Use the Right One and 9 Best Delta Bathtub Faucet Repair Kits for Common Leaks and Drips. If your problem is a drip rather than a diverter failure, Repair Tub Faucet Drip: 7 Best Fixes and Replacement Parts Compared covers the common causes in more detail.
FAQ
What is a bathtub faucet repair kit?
A bathtub faucet repair kit is a set of replacement parts, such as valve stems, cartridges, seals, washers or diverter gates, that restores normal operation to a leaking or malfunctioning tub faucet without replacing the whole fixture.
How do I know which repair kit I need?
Identify the symptom first. If water comes out of the tub spout when the shower is on, you likely need a diverter kit. If a single-handle valve drips, a cartridge kit is typical. Check the brand and model stamped on the valve before buying.
Can I use a universal washer kit for my tub faucet?
Sometimes, but not reliably. Universal assortments are useful for trial fitting small washers and O-rings. Cartridges, valve stems and diverter gates usually need a matched part for a proper seal.
Do I need to shut off the water before repairing a tub faucet?
Yes. Turn off the water supply at the shutoff valves or the main line, and open the faucet briefly to relieve pressure before removing any part.
Why does my tub spout still leak after replacing the diverter parts?
The seat inside the valve body may be worn or scored, or the new gate may not be the correct size. Compare the replacement parts side by side with the old ones, and check the valve body for corrosion or mineral buildup.
Is a cartridge kit better than replacing the whole faucet?
For most drips at a single-handle tub valve, a cartridge replacement is far less work and often solves the problem. If the valve body is cracked or heavily corroded, a full faucet replacement may be the better choice.
When should I call a plumber?
Call a licensed plumber if the valve body is corroded or cracked, if you cannot shut off the water supply, or if the leak is coming from inside the wall. Those repairs can involve water damage and should be handled by a professional.
Conclusion
For a tub spout that won’t divert, the Enhon 2 Set Tub Spout Diverter Repair Kit and the simpler diverter kit are the most targeted choices, with the Enhon set offering spare parts. For a single-handle Delta valve that drips, the Danco 86970 cartridge kit addresses the most common root cause. Three-handle Gerber owners whose handles are worn should look at the Danco 39617 trim kit. If you want a broad stash of seals and washers for several fixtures and mismatched parts, the 1075-piece universal assortment covers the widest range. Match the kit to the symptom and the fixture brand, and confirm the model number before you buy.
