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To repair a Delta tub faucet, the first step is identifying which internal part has failed. Most drips, leaks and stiff handles come down to a worn cartridge, a stem assembly, a handle trim kit or a faulty button, and each needs a different replacement. This list compares eight widely available parts and kits sold on Amazon US. The selection favors products whose listing names clearly state the Delta series or model they fit, a complete set of components, and feedback patterns owners commonly report, such as easy installation and reliable sealing. We did not install or test these products ourselves; the specs below come from manufacturer and listing information.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| DancoFaucet Repair Kits, Faucet Cartridges, Single Handle Faucets (86971) | Single-handle Delta faucets needing a full cartridge kit | All-cartridge repair kit with No. 212 SS ball |
| DELTA FAUCET RP25513 Stem Assembly | Older compression-style Delta faucets with a worn stem | Single stem assembly replacement |
| DELTA Faucet Shower Handle Renovation Repair Trim Kit RP54870 | Delta 600 Series tub and shower owners wanting a refreshed handle | Chrome handle trim renovation kit |
| DELTA Faucet RP46074 TUB SHOWER CARTRIDGE | Tub and shower valves with a leaking or stiff cartridge | Direct-fit tub/shower cartridge |
| DELTA Faucet RP77739 Repair Kit | General Delta tub faucet leaks needing a multi-part kit | Complete repair kit in one package |
| DancoFaucet Cartridge Repair Kits (86970) | Delta single-handle faucets with a brass cartridge | Brass cartridge with rubber seals |
| DELTA Faucet RP17446 Button | Single-handle bathroom, tub and shower faucets with a broken button | Replacement diverter/control button |
| Danco 10347 I Replacement Cartridge | Delta Monitor 1300/1400 series tub and shower valves | Monitor cartridge for RP19804-compatible valves |
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 suits owners of single-handle Delta faucets who want to replace the entire internal cartridge assembly rather than a single seal or stem. It is useful when several parts show wear at once, which is common after years of hard water use.
Key specs
- Type: all-cartridge repair kit
- Ball type: No. 212 stainless steel ball
- Finish: black listed in the product name
Pros
- Replaces the full internal cartridge, so several worn parts are handled together
- Stainless steel ball matches a common Delta ball size
- Single package simplifies ordering
Cons
- Fit depends on confirming your Delta model matches the listing
- Installation requires removing the handle and cartridge nut, which can be stubborn
DELTA FAUCET RP25513 Stem Assembly
DELTA FAUCET RP25513 Stem Assembly, One Size
This stem assembly is aimed at owners of older Delta faucets with a compression-style design where a worn stem causes dripping from the spout. It is a targeted repair when the rest of the valve is still in good condition.
Key specs
- Part type: stem assembly
- Manufacturer part number: RP25513
- Size listed as one size
Pros
- Genuine Delta part number helps with fit confirmation
- Targets the most common cause of dripping in stem-style faucets
- Low-effort swap compared with a full valve replacement
Cons
- Not suitable for cartridge-style faucets
- Older stems can be seized, making removal harder
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 trim kit is for Delta 600 Series tub and shower owners whose handle or trim has worn, cracked or faded but whose internal valve still works. It refreshes the visible hardware rather than fixing the leak itself.
Key specs
- Series: Delta 600 Series tub/shower
- Finish: chrome
- Part number: RP54870
Pros
- Restores the look of worn handles without replacing the whole faucet
- Matches the chrome finish of the original trim
- Model-specific part number reduces guesswork
Cons
- Does not repair internal leaks or drips
- Only suitable for the 600 Series, so confirm your model first
DELTA Faucet RP46074 TUB SHOWER CARTRIDGE
DELTA Faucet RP46074 TUB SHOWER CARTRIDGE, 1, White
This cartridge is intended for tub and shower valves where water continues to leak from the spout or showerhead even when the handle is off, or where the handle feels stiff or gritty. It is a direct replacement for the internal valve component.
Key specs
- Part type: tub/shower cartridge
- Part number: RP46074
- Quantity: 1
Pros
- Addresses the most common cause of tub faucet leaks
- Single-cartridge swap keeps the job manageable
- Genuine Delta part number supports correct fit
Cons
- Must match your specific valve; a wrong cartridge will not seal
- Stuck cartridges sometimes require a cartridge puller tool
DELTA Faucet RP77739 Repair Kit
DELTA Faucet RP77739 Repair Kit
This repair kit suits owners who suspect several small components have worn together, such as O-rings, seals and springs, and want them replaced in one order. It is a practical choice when the exact failed part is unclear.
Key specs
- Part type: repair kit
- Part number: RP77739
Pros
- Bundles several wear items so you do not need to diagnose one at a time
- Official Delta part number aids identification
- Useful for both leaks and stiff operation
Cons
- Kits can include parts you do not need for your specific leak
- Confirm compatibility with your faucet series before buying
DancoFaucet 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 brass cartridge repair kit is for Delta single-handle faucets that drip or deliver uneven temperature control. It suits owners who prefer a brass body for durability over plastic internal components.
Key specs
- Materials listed: brass, plastic, rubber, steel
- Application: Delta single-handle faucet
- Style: cartridge repair kit
Pros
- Brass cartridge body is a durable option for daily use
- Includes the common materials needed for a cartridge refresh
- Targets temperature and flow issues as well as drips
Cons
- Fit must be verified against your specific Delta model
- Requires disassembly and careful reassembly of the cartridge
DELTA Faucet RP17446 Button for Single Handle Bathroom, Tub and Shower
DELTA Faucet RP17446 Button for Single Handle Bathroom, Tub and Shower
This replacement button is for owners whose diverter or control button has broken, stuck or stopped engaging the tub-to-shower function. It is a small, inexpensive repair that avoids replacing the whole diverter assembly.
Key specs
- Part type: button
- Part number: RP17446
- Application: single-handle bathroom, tub and shower
Pros
- Fixes diverter problems without disturbing the valve
- Easy to install with basic hand tools
- Genuine Delta part number supports fit
Cons
- Does not address drips or leaks from the valve body
- Button fit varies across Delta models, so verify before ordering
Danco 10347 I Replacement Cartridge for Delta Monitor Single-Handle Tub/Shower Faucets
Danco 10347 I Replacement Cartridge for Delta Monitor Single-Handle Tub/Shower Faucets | Delta Monitor Shower Valve Cartridge Parts | RP19804 I Delta 1300/1400 Series
This Monitor-style cartridge is designed for Delta 1300 and 1400 series tub and shower valves, sometimes referenced by RP19804. It suits owners whose Monitor valve leaks or delivers inconsistent temperature.
Key specs
- Series: Delta Monitor 1300/1400
- Cross-reference: RP19804
- Type: replacement cartridge
Pros
- Clearly lists compatible Delta Monitor series
- Cross-reference to RP19804 helps match the original part
- Single cartridge swap addresses most valve-related leaks
Cons
- Only fits Delta Monitor valves, not other faucet families
- Removing an old cartridge can require specialized tools
Buying Guide
Choosing the right part starts with diagnosing the problem, then matching the part to your exact faucet family. Delta has used several valve designs over the years, including compression stems, cartridges and Monitor valves, and parts are not interchangeable across them.
Selection Criteria
- Compatibility: match the series, model number or cross-reference printed on your existing part
- Scope of repair: a single stem, cartridge, button or full kit each fix different symptoms
- Manufacturer part numbers: genuine Delta numbers reduce fit uncertainty
- Owner feedback patterns: owners frequently mention fit accuracy and whether the instructions were clear
Important Features and Specs to Check
- Valve type: stem, cartridge or Monitor
- Series name, such as 600 Series or 1300/1400 Monitor
- Finish, if the part is visible (chrome, brass or black)
- Included components, so you know whether seals and springs are supplied
Choosing by Need
- Drip from the spout with handle off: likely a cartridge or stem, so start with a cartridge or stem assembly.
- Stiff or gritty handle: often a cartridge or worn internal seals, so a repair kit or cartridge fits best.
- Diverter not switching between tub and shower: check the button first.
- Worn or cracked handle, with no leak: a trim kit refreshes the look without touching the valve.
Things to Watch Out For
- Shutting off the water supply before removing any part is essential. Turn off the supply and open the handle to relieve pressure.
- Do not force a seized cartridge. Penetrating lubricant and a cartridge puller reduce damage to the valve body.
- Take the old part to a hardware store or photograph its markings, since small differences matter.
- If you are unsure about the work or the valve is inside a wall, consult a licensed plumber.
FAQ
How do I know which Delta tub faucet part I need?
Look for a model or series number on the faucet body, handle or the removed part itself. Compare it with the listing details, and remove the old part first if you can. If the part is a cartridge, the markings on its top or base usually identify its type.
Can I repair a Delta tub faucet without removing the wall?
In many cases, yes. Stems, buttons and some cartridges are accessible through the handle and trim, which may be removed without cutting into the wall. Valves that sit deep behind the wall may require access from the back, so check your setup first.
Why does my Delta tub faucet still drip after replacing the cartridge?
Common reasons include a cartridge that is not the correct model, debris trapped under the seat, or a worn O-ring left in place. Shut the water off, clean the valve body, and confirm the new cartridge is fully seated and the handle is aligned.
Is a repair kit better than replacing a single part?
A kit is helpful when several components have worn together or you cannot pinpoint the failed part. A single part is a better choice when the diagnosis is clear, since it costs less effort and avoids replacing components that still work.
How do I remove a stuck Delta tub faucet cartridge?
Turn off the water, remove the handle and trim, and loosen the retaining nut. Apply penetrating lubricant and let it soak. A cartridge puller tool gives the best leverage. Avoid prying against the valve body, which can crack it.
Do Delta tub faucet parts fit other brands?
Generally no. Delta uses proprietary valve designs and dimensions, so parts from other brands rarely fit without modification. Stick with parts labeled for your Delta series or cross-referenced to your original part number.
When should I call a plumber instead of doing the repair myself?
Consider a professional if the valve is inside a wall with no access panel, if pipes are corroded or leaking, or if you are uncomfortable shutting off water and disassembling fixtures. Licensed plumbers can also check for hidden damage behind the valve.
Conclusion
The right choice depends on the symptom and your valve type. For a leaking tub or shower valve, the DELTA Faucet RP46074 Tub Shower Cartridge or the Danco 10347 I cartridge for Delta Monitor valves are the most direct options, provided your series matches. For single-handle faucets with multiple worn parts, the DancoFaucet all-cartridge kit or the brass cartridge kit (86970) offer a fuller refresh. A stem assembly suits older compression-style faucets, while the RP17446 button is the answer when only the diverter fails. The RP54870 trim kit is for cosmetic renewal of 600 Series handles. Confirm your model number before ordering, since matching the part to your valve matters more than any other factor.
Related reading
- Delta Faucet Repair Kits: How to Choose and Use the Right One
- Delta Bathtub Faucet Replacement Parts: 7 Best Picks for Repairs
- Delta Bathroom Tub Faucet Parts: 8 Best Replacements Compared
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.
