By Caleb MorganUpdated November 2026
Bath faucet leak repair usually comes down to one of three failures: a worn washer or seat in a compression faucet, a tired cartridge in a single-handle faucet, or a diverter that no longer seals when you switch from the spout to the showerhead. The right kit depends on which of these you have, and buying a generic assortment without checking your faucet type is the most common reason repairs drag on. The picks below were selected by reviewing manufacturer specifications, brand reputation and the patterns owners commonly report about fit, included parts and durability. None of these products were tested in a lab or installed by the author.
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 diverter leaks2 Set Tub Spout Diverter Repair KitView on Amazon - 3
TOP CHOICEBest for compression faucets58-Pack Faucet Washer Assortment KitView on Amazon - 4
Best for cartridge faucets without washersHome Impressions Washerless Cartridge Faucet Repair KitView on Amazon - 5
Best budget pick106 PCS Faucet Washer Assortment KitView on Amazon - 6
Best large assortment1075 PCS Universal Plumbing Repair KitView on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970) | Delta-style single-handle tub faucets with a leaking cartridge | Brass cartridge matched to a specific faucet model |
| 2 Set Tub Spout Diverter Repair Kit | Water that keeps flowing from the spout when the shower is on | Diverter gate, valve stem and seals in one set |
| 58-Pack Faucet Washer Assortment Kit | Compression tub faucets with dripping handles | Flat and beveled washers plus brass bibb screws |
| Home Impressions Washerless Cartridge Faucet Repair Kit | Washerless cartridge faucets | Cartridge-focused parts with no washer dependence |
| 106 PCS Faucet Washer Assortment Kit | Budget repairs across several faucets | Large assortment of flat and beveled washers |
| 1075 PCS Universal Plumbing Repair Kit | Households with many fixtures to maintain | 37 sizes of washers, gaskets and O-rings |
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: Delta-style single-handle tub faucets with a leaking cartridge
This kit suits homeowners whose single-handle tub or shower faucet drips or stays warm when the handle is off. Cartridge failure is the most common cause of leaks in these faucets, and a matched replacement is usually faster than rebuilding the old one.
Key specs
- Brass cartridge for Delta single-handle faucets
- Designed as a direct replacement for the matching cartridge
- Includes the seals needed for installation
Pros
- Matches a specific Delta cartridge, reducing guesswork
- Brass construction is widely preferred for durability
- Replacing the whole cartridge avoids chasing small worn parts
Cons
- Only useful if your faucet uses this cartridge type
- Requires removing the handle and cartridge clip to access it
Bottom line: The best starting point for a single-handle Delta bath faucet that leaks from the spout or handle. Confirm your cartridge model before ordering.
2 Set Tub Spout Diverter Repair Kit
2 Set Tub Spout Diverter Repair Kit, Bathroom Shower Bathtub Leaky Faucet Repair Includes Diverters Valve Stems Seals and Diverters Gates Leak Faucet Replacement Parts
Best for: Water that keeps flowing from the spout when the shower is on
If the showerhead sputters weakly or water still comes out of the tub spout after you pull the diverter, the gate or seal inside the spout is likely worn. This kit covers those internal parts rather than the faucet body.
Key specs
- Two sets, each with diverter gate, valve stem and seals
- Designed for tub spout diverters
Pros
- Addresses the most common diverter failure directly
- Two sets allow a spare for future repairs
- Parts are inexpensive to replace in a single visit
Cons
- Fit varies between spout brands, so measure first
- Does not repair leaks in the faucet handle or cartridge
Bottom line: A practical choice when the tub spout leaks or the shower loses pressure after diverting. Remove the spout and compare the diverter to the listing before buying.
58-Pack Faucet Washer Assortment Kit
58-Pack Faucet Washer Assortment Kit Rubber Faucet Washers Flat and Beveled Faucet Washers Repair Kit with Brass Bibb Screws for Repairing Faucet Leak
Best for: Compression tub faucets with dripping handles
Compression faucets leak when the washer under the stem wears out or the brass seat is pitted. A varied washer pack lets you try several sizes until one seals snugly without forcing the stem.
Key specs
- 58 pieces in total
- Flat and beveled rubber washers
- Includes brass bibb screws
Pros
- Good range of washer shapes for compression faucets
- Brass screws are included for reattaching the washer
- Covers common tub and sink faucet types
Cons
- Requires matching the correct washer size by trial
- Does not address cartridge or diverter leaks
Bottom line: The right pick for a compression tub faucet that drips from the spout even when fully closed. Bring the old washer to the store or measure it before choosing a size.
Home Impressions Washerless Cartridge Faucet Repair Kit
Home Impressions Washerless Cartridge Faucet Repair Kit
Best for: Washerless cartridge faucets
Washerless faucets use a cartridge to control flow and temperature. When the cartridge wears or the O-rings fail, a washerless kit provides the parts needed without the washer-based approach.
Key specs
- Washerless cartridge repair kit
- Designed for cartridge-style faucets
Pros
- Suits faucets that have no rubber washers to replace
- Targets the component most likely to fail in cartridge designs
- Useful for both tub and sink applications
Cons
- Compatibility depends on the cartridge brand and model
- Owners often report needing to confirm the cartridge type first
Bottom line: Best for cartridge faucets where you know there are no washers inside. Identify your faucet brand and cartridge before buying.
106 PCS Faucet Washer Assortment Kit
XBVV 106 PCS Faucet Washer Assortment Kit with Assorted Flat and Beveled Rubber Washers for Outdoor Garden Faucet Stem Leak Worn Replacement Repair
Best for: Budget repairs across several faucets
This large assortment is aimed at people who want spares on hand for multiple leaks around the house, including outdoor and tub faucets that use similar flat and beveled washers.
Key specs
- 106 pieces including flat and beveled washers
- Designed for faucet stem leak repair
Pros
- Large quantity covers many sizes at once
- Good value for multiple repairs
- Useful for keeping spares for future leaks
Cons
- Many sizes will go unused in a single repair
- Sizing still requires trial and error
Bottom line: A sensible budget choice for a home with several faucets. Expect to test a few sizes before one fits.
1075 PCS Universal Plumbing Repair Kit
NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit & O-Rings | Faucet Washers & Sealing Gaskets to Fix Leaky Faucets, Hoses, Spigots, Plumbing Fixtures with Pick Hook
Best for: Households with many fixtures to maintain
When a kit covers washers, gaskets and O-rings across 37 sizes, it can handle leaks in bath faucets, sinks and hoses without a separate trip to the store for each one.
Key specs
- 1075 pieces across 37 sizes
- Includes washers, sealing gaskets and O-rings
- Includes a pick hook for removing old parts
Pros
- Very broad size coverage for mixed repairs
- Pick hook helps remove stubborn old washers
- Works across faucets, hoses and fixtures
Cons
- Large selection can be overwhelming for a single fix
- Parts are generic and may not match branded cartridges
Bottom line: Best for homeowners who want one kit for many plumbing jobs. A specific cartridge or diverter kit is still the better choice for those parts.
Buying Guide
Identify Your Faucet Type
Before buying parts, determine whether the tub faucet is a compression design (two separate handles with rubber washers), a single-handle cartridge design, or a ball or disc design. Remove the handle cap and look at the stem. Compression faucets have a screw-on stem with a washer at the bottom. Cartridge faucets have a small cylinder that lifts out. Owners often report ordering the wrong kit because they skipped this step.
Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970), 58-Pack Faucet Washer Assortment Kit
Locate the Source of the Leak
A drip from the spout when the faucet is off usually points to a worn washer, seat or cartridge. Water leaking from the base of the handle often means a failed O-ring or packing nut. Water coming from the tub spout while showering points to the diverter. Narrowing the source first prevents buying parts you do not need.
Good picks for this: 2 Set Tub Spout Diverter Repair Kit, Home Impressions Washerless Cartridge Faucet Repair Kit
Size and Fit
Washers come in standard sizes and thicknesses, and a slightly wrong size can leak or damage the seat. Measure the old washer’s outside diameter and thickness with calipers or a ruler, and compare it to the assortment. Bring the old part to the store if you can. Check diverter dimensions too, since spout diameter varies.
Good picks for this: 58-Pack Faucet Washer Assortment Kit, 106 PCS Faucet Washer Assortment Kit
Material and Durability
Brass components resist corrosion better than plastic in hard-water areas, and many owners report that brass cartridges last longer. Rubber washers wear over time, so replacing them alongside the seat is good practice. Silicone O-rings tolerate hot water well.
Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970), 1075 PCS Universal Plumbing Repair Kit
Faucet Use Case
A kit for a tub faucet that sees daily hot water use needs sturdier parts than one for an occasional-use outdoor spigot. Consider how often the faucet runs and whether it is exposed to freezing. Households with several fixtures benefit from a broad assortment, while a single leaking faucet needs only a targeted kit.
Good picks for this: 106 PCS Faucet Washer Assortment Kit, 1075 PCS Universal Plumbing Repair Kit
Tools You Will Need
Most bath faucet repairs need an adjustable wrench, a flathead screwdriver, a Phillips screwdriver, a set of Allen wrenches for handle screws, and plumber’s grease. A pick or small hook helps remove old washers without scratching the seat. Shut off the water supply first and open the faucet to relieve pressure.
Good picks for this: 1075 PCS Universal Plumbing Repair Kit, 2 Set Tub Spout Diverter Repair Kit
Installation Care
Tighten packing nuts and stem screws firmly but do not overtighten, which can crack the handle or deform the washer. Apply a light coat of silicone plumber’s grease to O-rings and cartridge seals. After reassembly, turn the water on slowly and check for leaks at the base, spout and handle before closing the access panel.
Good picks for this: Home Impressions Washerless Cartridge Faucet Repair Kit, Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970)
FAQ
How do I know if my bath faucet needs a washer or a cartridge?
Remove the handle and look at the stem. A screw-on stem with a rubber washer at the bottom indicates a compression faucet. A cylinder that lifts out indicates a cartridge faucet. If you cannot tell, take a photo to a plumbing supply counter.
Why does my tub spout keep leaking when the shower is on?
The diverter gate or its seal is usually worn, so water is not fully redirected to the showerhead. Removing the spout and inspecting the diverter typically shows the cause. A diverter repair kit replaces these internal parts.
Can I repair a bath faucet leak without turning off the main water?
Shutting off the main is the safest approach. Many tub faucets have individual supply shutoffs under the wall, but if these are old or leaking, they may not seal fully. Plan for the main to be off during the repair.
How long does a bath faucet repair usually take?
A simple washer replacement often takes under an hour once the parts are on hand. Cartridge or diverter work can take longer if corroded fasteners need to be freed. Timing varies with experience and the faucet design.
Do I need plumber’s grease for every repair?
Silicone grease is recommended for O-rings and cartridge seals because it helps them seat and resists water. Avoid petroleum-based grease on rubber parts, since it can cause swelling in some materials.
When should I call a professional instead of repairing it myself?
If the faucet body is cracked, the supply pipes are corroded, or the leak is behind the wall, a licensed plumber is the safer choice. Consult a professional before attempting work that involves soldering, pipe cutting or hidden water lines.
Conclusion
For most bath faucet leak repair jobs, the right starting point is identifying whether the problem is a compression washer, a cartridge or a diverter. The Danco Cartridge Repair Kit for Delta Single-Handle Faucet (86970) suits single-handle Delta-style cartridges, the 2 Set Tub Spout Diverter Repair Kit fits spout leaks during showering, and the 58-Pack Faucet Washer Assortment Kit covers compression tub faucets. The budget and universal assortments make sense for households with several fixtures. Confirm your faucet type before ordering.
Sources
- Guidance on water conservation and fixing household leaks that waste water (epa.gov)
- Information on water heating efficiency and reducing hot water waste from dripping fixtures (energy.gov)
- Safety guidance for home repairs and product use (cpsc.gov)
Related reading
- Delta Bath Faucet Repair Kit: Step-by-Step Fix for Leaks and Drips
- 6 Best Bath Tub Faucet Repair Kit Options for Common Leaks (2026)
- 6 Best Bath Faucet Repair Kit Options for Common Leaks and Drips
- Repair Tub Faucet Drip: A Step-by-Step Guide to Stop Leaks (2026)
- Repair Kit for Faucet: A Step-by-Step Guide to Fixing Drips and Leaks
- Repair Exterior Faucet Leak: 6 Best Kits and Parts Compared (2026)
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.
