By Miles SinclairUpdated November 2026
Finding the right repair kit for a Delta kitchen faucet usually starts with a drip, a sprayer that won’t hold pressure, or handle action that feels stiff. A repair kit for a Delta kitchen faucet typically contains the cartridge or valve parts that wear out over time, and the right one depends on your faucet’s handle type and cartridge model. We compared five kits on fit, the specifications printed on each listing, brand reputation and common owner feedback patterns. This is a research-based list, not a hands-on test.
Our top picks at a glance
- 1
TOP CHOICEBest overallDanco Cartridge Repair Kit for Delta Single-Handle Faucet (86970)View on Amazon - 2
TOP CHOICEBest for alternate Delta cartridge fitsDanco Cartridge Repair Kit for Delta with No. 212 SS Ball (86971)View on Amazon - 3
TOP CHOICEBest for compact valve replacementDELTA FAUCET RP3614View on Amazon - 4
Best budget pickDelta Faucet RP77739 Repair KitView on Amazon - 5
Best for a single-handle valve swapDelta Faucet RP50587 Single Handle Valve CartridgeView on Amazon
Our Top Picks
| Product | Best for | Key feature |
|---|---|---|
| Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970) | Most single-handle Delta kitchen faucets | Brass cartridge kit with a broad compatibility listing |
| Danco Cartridge Repair Kit for Delta with No. 212 SS Ball (86971) | Delta faucets using a No. 212 stainless ball | Stainless steel ball included for ball-type mechanisms |
| DELTA FAUCET RP3614 | Compact replacement in tight cabinet spaces | Small-profile Delta replacement part |
| Delta Faucet RP77739 Repair Kit | Straightforward drip repairs on a budget | Genuine Delta repair kit with OEM-style components |
| Delta Faucet RP50587 Single Handle Valve Cartridge | Full valve cartridge replacement | Chrome-finished single handle valve cartridge |
Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970)
Danco 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
Best for: Overall fit for single-handle Delta kitchen faucets that drip or stick.
This is the kit most homeowners would start with when a single-handle Delta faucet leaks from the spout. It suits anyone who has confirmed their faucet uses a standard cartridge and wants a brass-body replacement.
Key specs
- Cartridge repair kit for Delta single-handle faucets
- Brass cartridge body with plastic and rubber seals
- Model number 86970 printed on the package
Pros
- Broad compatibility with common Delta single-handle cartridges
- Brass construction is widely preferred over all-plastic parts for durability
- Includes the O-rings and seals typically needed in the same job
Cons
- You must match your existing cartridge number before buying
- Not a fit for Delta faucets with a non-cartridge valve design
Bottom line: Best for homeowners with a standard Delta single-handle kitchen faucet who want a brass replacement and are comfortable checking compatibility first.
Danco Cartridge Repair Kit for Delta with No. 212 SS Ball (86971)
Faucet Repair Kits, Faucet Cartridges, Single Handle Faucets, Faucet Repair Parts, Brass, Black, All Danco Cartridge Repair Kit for Delta with No. 212 SS Ball (86971)
Best for: Delta faucets that use a No. 212 stainless ball in the valve.
This kit is aimed at owners who have opened the faucet and found a ball-type mechanism. It is a good second option if the first kit does not match the internal parts.
Key specs
- Cartridge repair kit designed around the No. 212 ball
- Stainless steel ball included
- Model number 86971 on the listing
Pros
- Stainless ball is a common replacement when the original ball is pitted
- Clear match when the old ball is marked No. 212
- Keeps the faucet body and handle in place
Cons
- Only useful if your faucet actually uses a No. 212 ball
- Requires disassembly to confirm the fit
Bottom line: Best for owners who have identified a No. 212 ball in their Delta valve and want a stainless replacement.
DELTA FAUCET RP3614
DELTA FAUCET RP3614, Small, Multicolor
Best for: Compact replacement in tight cabinet spaces.
This part suits people working in a small sink base or with a faucet that has limited room for a larger cartridge. It is the kind of genuine Delta part many owners look for when a replacement must match the original closely.
Key specs
- Delta part number RP3614
- Small-format replacement component
Pros
- Genuine Delta part number makes matching simpler
- Small profile suits tight spaces
- Easy to identify by its part number on the old component
Cons
- Listing details are limited, so verify the part number against your faucet
- Not a complete kit, so you may need extra seals
Bottom line: Best for owners who have already matched the RP3614 part number and need a compact Delta replacement.
Delta Faucet RP77739 Repair Kit
Delta Faucet RP77739 Repair Kit
Best for: Straightforward drip repairs on a budget.
This kit suits a homeowner who wants a genuine Delta repair kit for a common leak without paying for a premium cartridge. It works well for a first repair attempt.
Key specs
- Delta repair kit, part number RP77739
- Includes seals and small internal components
Pros
- Genuine Delta parts for a closer match to the original
- Manageable scope for a typical drip repair
- Good starting point before buying a full cartridge
Cons
- Fewer detailed specs on the listing than some competitors
- Still requires matching to your faucet model
Bottom line: Best for budget-minded owners with a simple drip who are willing to confirm fit before ordering.
Delta Faucet RP50587 Single Handle Valve Cartridge
Delta Faucet RP50587 Single Handle Valve Cartridge,Chrome,Small
Best for: Full valve cartridge replacement on a single-handle faucet.
This is a complete cartridge rather than a seal-only kit, which suits a faucet where the valve itself has failed or the handle feels loose and inconsistent.
Key specs
- Single handle valve cartridge, part number RP50587
- Chrome finish listed on the product name
- Small-format cartridge
Pros
- Complete cartridge means fewer loose parts to manage
- Chrome finish is listed, matching many Delta fixtures
- Clear Delta part number for identification
Cons
- Costs more effort to install than a seal-only kit
- Must confirm the cartridge matches your valve body
Bottom line: Best for owners replacing a worn single-handle valve cartridge who want a complete Delta part rather than individual seals.
If you are still deciding between repairing and replacing the whole fixture, our guide to Delta Faucet Repair Kits: How to Choose and Use the Right One walks through the decision in more detail.
Buying Guide
Identify your cartridge or valve type
Most Delta kitchen faucets use either a single-handle cartridge or a valve assembly. Remove the handle and look for a stamped model or part number on the cartridge. Matching that number is the single most important step before buying any kit. The Replace Kitchen Faucet Cartridge: Step-by-Step Repair Guide article covers how to pull the cartridge safely.
Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970), Delta Faucet RP50587 Single Handle Valve Cartridge
Check the ball type
Some Delta faucets use a ball mechanism rather than a cartridge. If the ball is marked No. 212, a kit that includes a matching stainless ball is the right direction. Owners often report that a pitted or worn ball is the source of persistent drips.
Good picks for this: Danco Cartridge Repair Kit for Delta with No. 212 SS Ball (86971)
Confirm part numbers before ordering
Delta uses specific part numbers such as RP3614, RP77739 and RP50587. Compare the number on your old part with the listing. Small differences in a suffix can mean a different internal layout, so take the old part to a store or photograph the stamped numbers before you order.
Good picks for this: DELTA FAUCET RP3614, Delta Faucet RP77739 Repair Kit
Consider kit scope: seals only or full cartridge
A seal-only kit is cheaper to install but requires careful reassembly. A complete cartridge replaces the moving parts in one piece and tends to be simpler for less experienced DIYers. Decide based on how comfortable you are with small components.
Good picks for this: Delta Faucet RP77739 Repair Kit, Delta Faucet RP50587 Single Handle Valve Cartridge
Match finish and material
Brass bodies generally hold up better to mineral-heavy water than all-plastic parts, according to general plumbing guidance. Chrome finish on a replacement cartridge should match the handle and spout so the repair does not look mismatched. Check the listing for finish before buying.
Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970), Delta Faucet RP50587 Single Handle Valve Cartridge
Plan for the shutoff valves and water supply
Turn off the supply valves under the sink before disassembly and open the faucet to relieve pressure. Place a towel in the sink basin so small parts do not fall down the drain. Keeping these steps in mind matters more than the kit itself for a clean repair.
Good picks for this: DELTA FAUCET RP3614, Delta Faucet RP77739 Repair Kit
Think about how often you will repair it
If the faucet is old and the body is corroded, a repair kit may be a short-term fix. Owners often report that a new cartridge or valve restores performance, but heavily worn bodies may still leak. Weigh the age of the faucet against the cost of a full replacement.
Good picks for this: Delta Faucet RP50587 Single Handle Valve Cartridge, Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970)
FAQ
What is included in a repair kit for a Delta kitchen faucet?
A repair kit usually includes a cartridge or valve component plus seals, O-rings and sometimes a ball. Some kits are seal-only, while others replace the full moving assembly. Always check the product listing to see which parts are included.
How do I know which repair kit fits my Delta faucet?
Remove the handle and look for a stamped part or model number on the cartridge or valve. Match that number to the kit listing. If you cannot find a number, photograph the internal parts and compare them carefully before ordering.
Can I use a Danco kit on a Delta faucet?
Yes, the Danco kits listed here are designed for specific Delta single-handle configurations. Compatibility depends on the cartridge number and mechanism type, so confirm the exact model before buying.
Do I need to shut off water before repairing a Delta kitchen faucet?
Yes. Close the hot and cold supply valves under the sink and open the faucet to drain remaining water. This prevents spraying and makes it easier to remove the cartridge.
How long does a Delta cartridge repair usually last?
Results vary with water quality, usage and installation care. Owners often report that a new cartridge resolves a drip for a long period, but sediment-heavy water can shorten the life of any internal part.
When should I replace the whole faucet instead of repairing it?
If the faucet body is corroded, the spout leaks at the base, or repairs keep failing, replacement may be the better choice. For a broader comparison, see Trinsic Delta Kitchen Faucet Review: Features and Performance and Delta Touch2O Kitchen Faucet: Features, Setup and Common Issues.
Are there alternatives to a repair kit for Delta faucet parts?
Yes. Some owners buy individual replacement parts rather than a kit. The 7 Best Delta Kitchen Faucet Parts (2026): Repair-Ready Picks article covers separate components in more detail.
Conclusion
For most single-handle Delta kitchen faucets, the Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970) is the most broadly suited starting point. If you have confirmed a No. 212 ball, the 86971 kit fits that job directly. The DELTA FAUCET RP3614 and Delta Faucet RP77739 suit owners who have matched genuine Delta part numbers, while the RP50587 cartridge is the better choice for a full valve replacement. Confirm the part number before ordering, and turn off the water supply first.
Sources
- Guidance on household water use, leak detection and water efficiency (epa.gov)
- Information on home water heating and efficient fixtures (energy.gov)
- Consumer safety information on home plumbing and repair tasks (cpsc.gov)
About Miles Sinclair
Miles Sinclair is part of our editorial team and reviews and edits our kitchen faucets & sinks guides, checking product details against manufacturer specifications and owner feedback.
