By Brooke SterlingAs an Amazon Associate I earn from qualifying purchases. This page may contain affiliate links.
If you need to repair delta bathtub faucet hardware, the fix usually comes down to one worn part: a cartridge that no longer seals, a tub spout that leaks at the connection, a stem that has gone stiff, or a handle button that has broken off. Knowing which component is failing saves you a second trip to the store. This guide compares seven replacement parts and kits that owners commonly use for Delta bath and tub-shower faucets, and it explains how to match each one to the symptom you are seeing. The selection criteria were research-based: we looked at listing specifications, brand reputation for Delta-compatible parts, and the kinds of compatibility and fit feedback owners tend to share.
Our selection criteria were simple. First, the part had to be a clearly identified Delta replacement or a repair kit built for Delta single-handle faucets. Second, the listing had to state enough detail about what it fits so you can confirm compatibility before ordering. Third, we favored parts that address a specific, common failure point rather than vague all-in-one promises. We did not test these products ourselves. Everything below is based on specifications, brand information and general owner feedback patterns, so always confirm the model number on your faucet before buying.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| DancoFaucet Repair Kits, Cartridge Repair Kits (86970) | Dripping single-handle bath faucets | Brass cartridge repair kit for Delta single-handle faucets |
| DELTA Faucet RP17453 TUB SPOUT | Leaking or loose tub spouts | Chrome replacement tub spout |
| DancoFaucet All Cartridge Repair Kit (86971) | Delta faucets with a No. 212 ball | Kit paired with the No. 212 stainless ball |
| DELTA Faucet Shower Handle Renovation Repair Trim Kit RP54870 | Worn or faded 600 Series handles | Chrome trim kit for handle renovation |
| DELTA Faucet RP77739 Repair Kit | General Delta repair with a multi-part kit | Manufacturer-branded repair kit |
| DELTA Faucet RP25513 Stem Assembly | Stiff handles or water leaking from the spout | Replacement stem assembly |
| DELTA Faucet RP17446 Button for Single Handle Bathroom, Tub and Shower | Broken or missing diverter or handle buttons | Replacement button for single-handle units |
DancoFaucet Repair Kits, Cartridge Repair Kits, Faucet Cartridges, Single Handle Faucets, Brass/Plastic/Rubber/Steel Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (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 a good fit for homeowners whose Delta single-handle tub faucet drips from the spout even when the handle is fully off. A cartridge is the most common culprit in that situation, and this kit is aimed at replacing the internal mechanism rather than the whole faucet.
Key specs
- Cartridge repair kit for Delta single-handle faucets
- Brass cartridge components with rubber and plastic seals
- Listed model number: 86970
Pros
- Targets the most common source of drips in single-handle units
- Brass construction is durable for wet environments
- Clear model number makes compatibility checking straightforward
Cons
- Requires matching the correct Delta cartridge type before ordering
- Installation requires shutting off water and basic hand tools
DELTA Faucet RP17453 TUB SPOUT
DELTA Faucet RP17453 TUB SPOUT, One Size, Chrome
This suits anyone whose tub spout wobbles, leaks at the base, or no longer diverts water to the showerhead properly. Spouts wear out at the threaded connection, and replacing the spout is often easier than repairing the internal diverter.
Key specs
- Replacement tub spout, chrome finish
- Manufacturer part number RP17453
Pros
- Genuine Delta part number simplifies matching
- Chrome finish matches most Delta bath fixtures
- Straightforward swap that usually needs no plumbing skills
Cons
- Thread size and spout reach must match your existing fixture
- Does not repair internal cartridge or diverter problems
DancoFaucet Repair Kits, Faucet Cartridges, Single Handle Faucets, Faucet Repair Parts, Brass, Black, All Cartridge Repair Kit for Delta with No. 212 SS Ball (86971)
DancoFaucet Repair Kits, Faucet Cartridges, Single Handle Faucets, Faucet Repair Parts, Brass, Black, All Cartridge Repair Kit for Delta with No. 212 SS Ball (86971)
This kit is for owners who have already identified their faucet as using a No. 212 stainless ball and want a complete cartridge-side repair in one purchase. It is a sensible choice if the original cartridge is worn and you prefer a matched set of components.
Key specs
- Cartridge repair kit designed for Delta faucets with a No. 212 stainless ball
- Brass components with a black finish option in the listing name
- Listed model number: 86971
Pros
- Bundles the ball and cartridge parts needed for a full internal repair
- Brass build resists corrosion in humid bathroom conditions
- Useful when a single component has failed but the rest is worn
Cons
- Only suitable if your faucet uses the No. 212 ball style
- Owners often need to confirm the ball type by removing the handle first
DELTA Faucet Shower Handle Renovation Repair Trim Kit for Delta 600 Series Tub, Chrome RP54870
DELTA Faucet Shower Handle Renovation Repair Trim Kit for Delta 600 Series Tub, Chrome RP54870
This is aimed at owners of Delta 600 Series tub and shower faucets whose handle trim has become worn, cracked or faded, but whose internal mechanism still works. It is a cosmetic-plus-functional refresh rather than a leak fix.
Key specs
- Renovation trim kit for Delta 600 Series tub and shower handles
- Chrome finish
- Manufacturer part number RP54870
Pros
- Restores the look of worn handles without replacing the whole faucet
- Specific to the 600 Series, which reduces guesswork
- Chrome finish is widely matched to Delta fixtures
Cons
- Does not fix leaks from the cartridge or stem
- Only useful if you own a 600 Series model
DELTA Faucet RP77739 Repair Kit
DELTA Faucet RP77739 Repair Kit
This is a manufacturer-branded kit for homeowners who want a single package of Delta-specified repair components. It suits people who prefer buying from the faucet maker rather than from a third-party kit supplier.
Key specs
- Delta-branded repair kit
- Manufacturer part number RP77739
Pros
- Manufacturer branding gives confidence in fit for supported models
- Good starting point when the exact failed part is unclear
- Keeps repair components matched to the original design
Cons
- Contents should be checked against your faucet before opening the job
- May include parts you do not need if the fault is isolated
DELTA Faucet RP25513 Stem Assembly, One Size
DELTA FAUCET RP25513 Stem Assembly, One Size
This suits owners whose handle feels stiff, requires too much force to turn, or lets water through the spout when closed. The stem is a common wear item in compression-style Delta faucets, and replacing it is often the fix.
Key specs
- Replacement stem assembly
- Manufacturer part number RP25513
- One size as listed
Pros
- Addresses a frequent cause of stiff handles and spout leaks
- Genuine Delta part number simplifies matching
- Relatively simple swap for a handy homeowner
Cons
- Stems vary by Delta model, so compatibility must be confirmed
- Requires removing the handle and possibly the packing nut
DELTA Faucet RP17446 Button for Single Handle Bathroom, Tub and Shower
DELTA Faucet RP17446 Button for Single Handle Bathroom, Tub and Shower
This is for owners whose diverter or handle button has cracked, detached or stopped engaging. Without a working button, switching between tub spout and showerhead becomes difficult, even when the valve itself is fine.
Key specs
- Replacement button for single-handle bathroom, tub and shower faucets
- Manufacturer part number RP17446
Pros
- Inexpensive way to fix a single failing component
- Designed for the single-handle Delta series it is listed for
- Quick to install with minimal tools
Cons
- Only solves diverter or button problems, not leaks
- Fit depends on the specific handle design, so verify before ordering
Buying Guide
Before you buy any replacement part, diagnose the symptom. A drip from the spout with the handle off points to the cartridge or stem. Water leaking at the base of the spout suggests a worn spout gasket or loose spout connection. A handle that will not switch between tub and shower usually means a faulty diverter or missing button. A stiff or gritty handle often traces back to mineral buildup or a worn stem.
The most important step is identifying your faucet’s model number. Delta often stamps the model on the handle, under a cap, or on the valve body. Once you have it, check that the replacement part’s listing names the same model series. Also note the cartridge type, the stem type and any ball style. Owners frequently report that the wrong cartridge or stem was ordered because the faucet series was guessed instead of read from the hardware.
Specs to check include part number, finish (chrome, brass or black), thread size on spouts, and whether the part is a single component or a full kit. Kits offer convenience when you are unsure which piece has failed. Single parts are cheaper in terms of what you are replacing but require accurate diagnosis.
Choosing by need: for a dripping spout, start with the cartridge kit. For a leaking spout base, replace the tub spout. For a stiff handle, try the stem. For cosmetic wear on 600 Series handles, use the renovation trim. For a broken diverter, replace the button. When the fault is unclear, a manufacturer-branded kit can cover several common wear points at once.
Watch out for a few common mistakes. Do not replace parts before shutting off the water supply, and place a towel or stopper in the drain to avoid losing small clips or screws. Take a photo of the assembly before disassembly so you can reassemble it in the correct order. Avoid overtightening new parts, since that can crack plastic components or strip threads. If the valve body itself is corroded or cracked, no repair kit will solve the problem and replacement of the whole faucet may be the better route. For guidance on fixing a tub drip step by step, see Repair Tub Faucet Drip: 7 Best Fixes and Replacement Parts Compared. If you are weighing cartridge options specifically, 8 Best Delta Bathtub Faucet Cartridge Picks for Repairs in 2026 covers those in more depth.
It also helps to know the difference between a repair kit and a replacement cartridge. A kit typically includes several seals, o-rings and sometimes a stem or ball, while a cartridge is the single unit that controls flow and temperature. If the cartridge is cracked or heavily scaled, a kit may not restore proper operation, and a new cartridge is the better choice. For a broader comparison of kits for common leaks, see 9 Best Delta Bathtub Faucet Repair Kits for Common Leaks and Drips and 5 Best Delta Bath Faucet Repair Kits for Common Leaks (2026).
Finally, consider whether your faucet is a Delta bath faucet with a separate valve or a combined tub-shower trim. The parts differ, and matching them to the right configuration prevents wasted effort. For the general repair process on a Delta tub faucet, Delta Faucet Repair Kits: How to Choose and Use the Right One explains how to choose a kit based on the failure you are dealing with.
FAQ
How do I know which Delta part I need?
Start by identifying the symptom. A drip from the spout with the handle closed usually points to the cartridge or stem. Leaks at the base of the spout suggest the spout or its gasket. A diverter that will not switch points to the button or diverter assembly. Confirm your faucet’s model number before ordering any part.
Can I repair a Delta bathtub faucet without shutting off the water?
No. Shut off the water supply at the valve or the main before removing any handle, cartridge or stem. Open the faucet afterward to release residual pressure and check that the water is fully off before you start work.
Do I need special tools to replace a Delta cartridge or stem?
Most repairs require a screwdriver, an adjustable wrench, a small Allen wrench or handle puller in some models, and possibly a cartridge puller. A small amount of plumber’s grease helps seals fit properly. Work over a towel and cover the drain to prevent losing small parts.
How can I tell if a repair kit is the right size for my faucet?
Check the model number printed on the faucet or in its original documentation, then compare it to the listing. Also confirm the internal design, such as whether the faucet uses a cartridge, a compression stem or a ball. Kits built for one design will not fit another.
Why does my Delta faucet still drip after replacing the cartridge?
Common reasons include a worn seat in the valve body, debris caught in the new cartridge, incorrect orientation during installation, or a stem or O-ring that was not replaced. Turn the water off, reinspect the seats and seals, and reinstall carefully. If the valve body is scored or corroded, the faucet may need replacement.
Is a repair kit or a full replacement faucet the better choice?
A repair kit makes sense when the faucet body is intact and the problem is a worn internal part. A full replacement is more sensible when the body is cracked, heavily corroded, or no longer available in parts. Weigh the age of the faucet and the number of problems you are seeing.
When should I call a professional plumber?
Consult a licensed plumber if you smell gas, see water damage behind the wall, cannot shut off the supply valves, or if the faucet involves concealed valves that you are unsure how to access. Plumbing work that involves pressure lines or shared supply systems carries real risk, so a professional opinion is worth the cost of a visit.
Conclusion
To repair delta bathtub faucet problems effectively, match the part to the failure. For dripping from the spout, the cartridge repair kits from DancoFaucet (86970 for a general single-handle unit, 86971 for No. 212 ball faucets) are the most direct options. For leaks at the spout base, the Delta RP17453 tub spout is the logical replacement. For stiff handles, the RP25513 stem assembly addresses a common wear point. For worn 600 Series trim, the RP54870 renovation kit restores appearance without touching the valve. For a broken diverter, the RP17446 button is the targeted fix, and the RP77739 repair kit suits owners who want a manufacturer-branded bundle when the fault is unclear. Confirm your model number first, shut off the water, and replace one component at a time so you can see which change solved the problem.
About Brooke Sterling
Brooke writes about kitchen faucets & sinks. Each guide starts with research into how products are built and what owners report after months of use, and is revised when better options appear.
