Bathroom Leaking Faucet Repair: 6 Best Repair Kits Compared (2026)

Updated November 2026

Bathroom leaking faucet repair usually comes down to one worn part: a cartridge, a washer, an O-ring or a seat that no longer seals. The right repair kit can save you a plumber visit, but only if it matches your faucet’s brand and type. This guide compares six kits from the product list we selected for this roundup. Our selection method is research-based: we reviewed the listing details, the parts each kit is designed to replace, the brand’s standing for replacement parts, and patterns in owner feedback. We did not test these products ourselves. Use the comparison to narrow your options, then confirm fit before you buy.

Our Top Picks

Quick Comparison

Product	Best for	Key feature
Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970)	Single-handle Delta-style cartridge faucets	Brass cartridge repair kit matched to a specific Delta cartridge type
Home Impressions Washerless Cartridge Faucet Repair Kit	Washerless cartridge faucets	Cartridge-focused kit for washerless designs
NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit	Owners who want a broad parts drawer	Large assortment of washers, O-rings and gaskets in 37 sizes
XBVV 106 PCS Faucet Washer Assortment Kit	Washer-style stem leaks	Flat and beveled rubber washers in one assortment
NBRINGO 114-Piece Faucet Washers Assorted Kit	Spigot-style and hose-bib leaks	12 washer sizes plus brass bibb screws
Delta Faucet RP77739 Repair Kit	Delta faucet owners wanting an OEM-style kit	Brand-specific repair kit from the faucet manufacturer

Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970)

Best for: Single-handle Delta-style cartridge faucets with a brass cartridge that has started to drip.

This kit suits homeowners who have identified a single-handle cartridge as the source of a leak and want a kit aimed at that part rather than a general assortment. It is a good fit when the faucet is a Delta-compatible single-handle model and the drip comes from the handle or spout even when the handle is off.

Key specs

• Designed as a cartridge repair kit for Delta single-handle faucets
• Brass cartridge component listed in the product name
• Includes the rubber, brass and plastic parts the listing describes

Pros

• Targets the cartridge, the most common source of single-handle drips
• Model-specific listing makes fit easier to confirm
• Brass construction suits long-term use

Cons

• Only useful if your faucet matches the Delta single-handle design
• Owners with other brands will need a different kit

Bottom line: The strongest choice for owners who have confirmed their Delta single-handle cartridge is the source of the leak.

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Home Impressions Washerless Cartridge Faucet Repair Kit

Best for: Washerless cartridge faucets with a leak at the spout or handle.

This kit fits homeowners whose faucet uses a washerless cartridge rather than rubber washers. Confirm the faucet type first, since the kit is designed around that cartridge style.

Key specs

• Washerless cartridge repair kit
• Intended for cartridge-style bathroom faucets

Pros

• Focused on washerless cartridge designs
• Simple scope makes it easy to decide whether it applies
• Useful when a cartridge swap is the likely fix

Cons

• Not suitable for washer-style faucets
• Compatibility should be checked against your faucet model

Bottom line: A sensible pick for anyone who has confirmed a washerless cartridge is leaking.

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NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit & O-Rings

Best for: Owners who want a large parts drawer covering several leak points around the house.

This assortment suits people who repair faucets, hoses and fixtures regularly, or who want to keep spares on hand for trial-and-error fixes. It is less targeted than a model-specific cartridge kit, so it works best when you already know the part type you need.

Key specs

• 1,075 pieces across 37 sizes, per the listing name
• Includes washers, sealing gaskets and O-rings
• Includes a pick hook for removing old seals

Pros

• Wide size range covers many common faucet and hose seals
• Useful for multiple repairs across the home
• Pick hook helps remove worn seals

Cons

• Requires you to identify the correct size before use
• Overkill for a single bathroom repair

Bottom line: The best fit for a home that needs a broad set of seals on hand rather than a single cartridge kit.

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XBVV 106 PCS Faucet Washer Assortment Kit

Best for: Washer-style stem leaks where a worn rubber washer is the likely cause.

This kit suits owners of compression-style faucets who need a range of flat and beveled washers. Because washer sizes vary, it helps to remove the old washer and bring it to a comparison before choosing a replacement.

Key specs

• 106 pieces in one assortment
• Flat and beveled rubber washers, per the listing name
• Designed for faucet stem leak replacement

Pros

• Large count gives several size options in one purchase
• Covers both flat and beveled washer styles
• Practical for washer-style stem leaks

Cons

• Finding the exact size can take trial and error
• Not a substitute for a cartridge kit on cartridge faucets

Bottom line: A good match for compression faucets with a worn washer and a need for several size options.

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NBRINGO 114-Piece Faucet Washers Assorted Kit for Hose Bib

Best for: Spigot-style and hose-bib leaks, with a budget-friendly range of washer sizes.

This kit is aimed at outdoor and utility fixtures as much as indoor faucets. It suits owners who need a modest set of washers and bibb screws for a stem or hose-bib repair.

Key specs

• 114 pieces across 12 sizes, per the listing name
• Flat and beveled faucet rubber washers
• Includes brass bibb screws

Pros

• Compact range for common hose-bib sizes
• Includes screws, which many assortments omit
• Budget-friendly for occasional repairs

Cons

• Built around outdoor and spigot fixtures more than bathroom faucets
• Smaller range than the larger assortments

Bottom line: A practical pick for spigot-style leaks and a budget-minded repair kit.

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Delta Faucet RP77739 Repair Kit

Best for: Delta faucet owners who want a repair kit from the manufacturer’s own parts line.

This kit suits homeowners who have confirmed their faucet is a Delta model and want parts designed for that brand. Check the model number on your faucet before ordering, since Delta uses many internal designs.

Key specs

• Brand-specific repair kit from Delta Faucet
• Model number RP77739 as listed

Pros

• Designed by the faucet manufacturer
• Reduces guesswork on fit for Delta faucets
• Straightforward choice for brand owners

Cons

• Only relevant to Delta faucets
• Specific fit must still be matched to the faucet model

Bottom line: The right call for Delta owners who want a kit from the same brand as their faucet.

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Buying Guide

Identify the faucet type first

Cartridge, washer (compression), ball and ceramic disc faucets all leak for different reasons, and each needs different parts. Look at the handle and remove the cap or trim to see which design you have. A cartridge kit will not fix a washer-style faucet, and a washer assortment will not fix a cartridge.

Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970); XBVV 106 PCS Faucet Washer Assortment Kit

Check the brand and model

Faucet brands use different cartridge diameters, stem lengths and internal geometries. Note the brand name and model number stamped on the faucet body or in its installation manual. A kit listed for one brand is unlikely to fit another.

Good picks for this: Delta Faucet RP77739 Repair Kit; Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970)

Match the size of the part

Washers and O-rings are sold in fractional and metric sizes. Take the old part to a hardware store or measure it with calipers if you can. A slightly wrong size can cause a new leak or fail to seal at all.

Good picks for this: NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit; NBRINGO 114-Piece Faucet Washers Assorted Kit for Hose Bib

Consider the material

Brass components resist corrosion better than many plastics in damp bathroom conditions. Rubber washers vary in hardness, and harder rubber generally lasts longer under repeated turns. Look for listings that name the materials used.

Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970); Home Impressions Washerless Cartridge Faucet Repair Kit

Decide between a targeted kit and an assortment

A targeted kit is quicker when you know the failed part. An assortment costs less per piece and helps if you need to try several sizes or repair several fixtures. Targeted kits reduce the chance of ordering the wrong part, while assortments give you spares.

Good picks for this: Home Impressions Washerless Cartridge Faucet Repair Kit; NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit & O-Rings

Plan for the repair itself

Shut off the water supply under the sink before disassembly, and plug the drain so small parts do not disappear. Lubricate new O-rings with plumber’s grease, which is safe for potable water. Reassemble carefully and turn the water on slowly to check for leaks.

Good picks for this: Delta Faucet RP77739 Repair Kit; XBVV 106 PCS Faucet Washer Assortment Kit

Use the right kit for outdoor and spigot leaks

Outdoor hose bibs and spigots use washers that wear faster from weather exposure and freezing. Choose a kit that includes the bibb screws and a range of flat and beveled washers for these fixtures, rather than a bathroom-focused cartridge kit.

Good picks for this: NBRINGO 114-Piece Faucet Washers Assorted Kit for Hose Bib; XBVV 106 PCS Faucet Washer Assortment Kit

FAQ

How do I know whether my faucet uses a cartridge or a washer?

Remove the handle and the cap or trim. A cartridge is a single removable unit, often with a brass or plastic body. A washer-style faucet has a stem with a rubber washer held by a brass screw at the bottom.

Can I fix a bathroom faucet leak without a repair kit?

Sometimes, if the leak is from a loose handle or a worn seat that can be tightened. For most drips, however, the cartridge, washer or O-ring must be replaced, and a kit or matching part is needed.

Do I need to turn off the water before repairing a faucet?

Yes. Shut off the supply valves under the sink, then open the faucet briefly to release residual pressure before you begin disassembly.

What tools do I need for a basic faucet repair?

Most repairs need an adjustable wrench, a screwdriver set, an Allen key for some handles, plumber’s grease and a rag. Protect the finish of the faucet with tape where a wrench will grip it.

Why does my faucet keep dripping after I replaced the washer?

The new washer may be the wrong size or type, the valve seat may be worn or corroded, or the washer may not be seated correctly. Inspect the seat and confirm the replacement matches the old part.

Is it safe to use a universal kit on any faucet?

Universal assortments help with spares, but they do not guarantee fit. Confirm the size and type before installing, and prefer a brand-specific kit when the faucet model is known.

When should I call a plumber instead of repairing it myself?

Call a licensed plumber if the leak is inside the wall, if the valve body is cracked, if the shutoff valves do not close fully, or if repeated repairs fail. For any gas, electrical or structural concern, consult a professional.

Conclusion

For most bathroom leaking faucet repair jobs, start by identifying whether your faucet uses a cartridge or a washer. If it is a Delta single-handle cartridge, the Danco kit is a focused choice. Washerless cartridge owners should look at the Home Impressions kit. Washer-style stem leaks suit the XBVV assortment, and spigot or hose-bib leaks suit the NBRINGO 114-piece kit. Owners who want a broad parts drawer should consider the NBRINGO 1075-piece assortment, while Delta owners who prefer the manufacturer’s line should compare the Delta RP77739 kit. Confirm the model and part size before ordering.

Sources

• Guidance on water conservation and reducing leaks in household fixtures (epa.gov)
• Consumer safety information on plumbing and home repair (cpsc.gov)
• Standards and certifications for drinking water components and fittings (nsf.org)

Related reading

• Bathroom Tub Faucet Parts: Identify, Repair and Replace Each One
• Bathroom Faucet Stopper Repair: A Practical Guide (2026)
• Bathroom Faucet Repair Kits: How to Fix a Leaky Faucet in 6 Steps
• 4 Best Delta Bathroom Faucet Repair Kit Picks for Every Fix
• 3 Best Delta Bathroom Faucet Repairs Kits for Every Fix (2026)
• 2 Handle Moen Bathroom Faucet Repair: A Step-by-Step Guide (2026)

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