By Caleb MorganUpdated November 2026
Finding the right aerator for Delta faucet models comes down to three things: matching the thread size, choosing the correct flow rate, and making sure the screen and gasket will seal properly. This guide compares seven replacement aerators that owners commonly buy for Delta kitchen and bathroom faucets. Our selection looked at manufacturer specifications, brand reputation, the consistency of owner feedback, and how clearly each listing identifies its fit. None of these were installed or measured by us; the comparisons rely on published specs and common owner reports.
Our top picks at a glance
- 1
TOP CHOICEBest overallDelta Faucet RP330 Aerator for 2.2 GPM, ChromeView on Amazon - 2
TOP CHOICEBest for water-saving kitchensDelta Faucet RP53998 2.2 Gpm AeratorView on Amazon - 3
TOP CHOICEBest for mixed-size sets28 pcs Faucet Aerators with 5 Pcs Faucet Aerator Key Aerators ReplacemView on Amazon - 4
Best budget pickJQK Faucet Areator, 4.75 GPM Insert Aerators 10 Pack, FAG-P10View on Amazon - 5
Best for replacing a worn originalDelta Faucet RP32529 Aerator for 2.2 GPM, ChromeView on Amazon - 6
Best for multi-faucet homesRegular Standard Replacement Parts, Brass Shell Aerator Faucet Filter with Gasket, 6 PackView on Amazon - 7
Best for low-flow sinksDanco 10780 1.5 gpm Cache Aerator Kit for Delta and Moen Faucets, Red/BlackView on Amazon
Our Top Picks
| Product | Best for | Key feature |
|---|---|---|
| Delta Faucet RP330 Aerator, 2.2 GPM, Chrome | Overall replacement on Delta faucets | Delta-specific 2.2 GPM rating |
| Delta Faucet RP53998 2.2 Gpm Aerator | Water-saving kitchen sinks | 2.2 GPM flow control |
| 28 pcs Faucet Aerators with Key Set | Mixed-size sets and unknown threads | Multiple inserts plus removal key |
| JQK Faucet Areator 10 Pack | Budget replacements and spares | Ten inserts in one pack |
| Delta Faucet RP32529 Aerator, 2.2 GPM, Chrome | Replacing a worn original | Delta-branded chrome finish |
| Regular Standard Replacement Parts Brass Aerator 6 Pack | Multi-faucet households | Brass shell with gasket |
| Danco 10780 1.5 gpm Cache Aerator Kit | Low-flow sinks and water savings | 1.5 GPM restrictor |
Delta Faucet RP330 Aerator for 2.2 GPM, Chrome
Delta Faucet RP330 Aerator for 2.2 GPM, Chrome
Best for: Overall replacement on Delta faucets
This is the most straightforward choice for anyone who knows their Delta faucet uses a standard aerator and wants a matching part. It suits homeowners replacing a clogged or mineral-crusted screen without wanting to guess at thread size.
Key specs
- Flow rate: 2.2 GPM
- Finish: Chrome
- Brand: Delta (OEM-style replacement)
Pros
- Brand-matched part reduces fit guesswork
- 2.2 GPM rating is the common Delta standard
- Chrome finish blends with most Delta fixtures
Cons
- Sold as a single part, so spares cost more per unit
- Not suitable for faucets that need a non-standard thread
Bottom line: Pick this if you want a direct OEM-style swap for a Delta faucet and do not need multiple spares.
Delta Faucet RP53998 2.2 Gpm Aerator
Delta Faucet RP53998 2.2 Gpm Aerator
Best for: Water-saving kitchen sinks
A good fit for kitchen faucets where you want the 2.2 GPM flow rate maintained after a repair. It is aimed at people who want steady, moderate flow for dishwashing and filling pots.
Key specs
- Flow rate: 2.2 GPM
- Brand: Delta
Pros
- Clear 2.2 GPM rating for water-conscious use
- Delta part number helps with matching
- Works as a like-for-like swap
Cons
- Limited finish or size detail in the listing name
- Owners with older faucets should confirm thread size first
Bottom line: A solid choice for a kitchen sink if you want the Delta 2.2 GPM rating and a brand-matched replacement.
28 pcs Faucet Aerators with 5 Pcs Faucet Aerator Key Aerators Replacement Inserts for Sink M16.5 18.5 21.5 24 mm
28 pcs Faucet Aerators with 5 Pcs Faucet Aerator Key Aerators Replacement Inserts for Sink M16.5 18.5 21.5 24 mm for Bathroom or Kitchen
Best for: Mixed-size sets and unknown threads
Useful when you are not sure which thread diameter your faucet uses, or when you want spares on hand. The range of sizes covers several common faucet types.
Key specs
- Pack contents: 28 aerator pieces plus 5 removal keys
- Listed sizes: M16.5, 18.5, 21.5, 24 mm
Pros
- Multiple sizes help when the original thread is unknown
- Removal keys make disassembly easier
- Good value for stocking spares
Cons
- Requires measuring to pick the correct size
- Generic parts may not seat as cleanly as brand-matched inserts
Bottom line: Best for homeowners with several faucets or an unknown thread who want to test sizes without repeated trips to the store.
JQK Faucet Areator, 4.75 GPM Insert Aerators 10 Pack, FAG-P10
JQK Faucet Areator, 4.75 GPM Insert Aerators 10 Pack Replacement Parts Only Work for Bathroom Sink Faucets, FAG-P10
Best for: Budget replacements and spares
A practical pick for people who need several inserts for bathroom sinks or want to keep spares in a drawer. It is less suited to kitchen sprayers that require a specific flow limit.
Key specs
- Pack size: 10 inserts
- Listed flow: 4.75 GPM
- Application: bathroom sink faucets
Pros
- Ten pieces in one pack for spares
- Budget-friendly way to replace worn screens
- Simple insert design
Cons
- 4.75 GPM is higher than the Delta 2.2 GPM standard
- Listed for bathroom sinks, so kitchen use may not suit
Bottom line: A budget-minded choice for bathroom sinks if you accept a higher flow rate and want multiple spares.
Delta Faucet RP32529 Aerator for 2.2 GPM, Chrome
Delta Faucet RP32529 Aerator for 2.2 GPM, Chrome
Best for: Replacing a worn original
Suited to owners who want to restore the factory spray pattern and flow after mineral buildup. The chrome finish is meant to match existing Delta fixtures.
Key specs
- Flow rate: 2.2 GPM
- Finish: Chrome
Pros
- Delta branding for a closer match to the original
- 2.2 GPM keeps flow consistent with standard fixtures
- Easy to identify by part listing
Cons
- Single-unit listing, so multiple spares add up
- Exact application depends on the faucet model
Bottom line: A reliable restore-to-factory choice for a single Delta faucet that needs its original aerator back.
Regular Standard Replacement Parts, Brass Shell Aerator Faucet Filter with Gasket, 6 Pack
Regular Standard Replacement Parts, Brass Shell, Aerator Faucet Filter with Gasket, For Kitchen Bathroom 6 Pack Faucet Aerator 2.2 GPM Bathroom Sink Aerator 15/16-Inch Male
Best for: Multi-faucet households
Useful for homes with several sinks where you want the same part in multiple locations. The brass shell is a sturdier material than many plastic-housed inserts.
Key specs
- Pack size: 6 aerators
- Flow rate listed: 2.2 GPM
- Thread listed: 15/16-inch male
- Includes gasket
Pros
- Brass shell for durability
- Six pieces cover several faucets
- Includes gasket for a tighter seal
Cons
- Thread size must match your faucet exactly
- Not a Delta-branded part, so fit should be verified
Bottom line: Good for households with multiple faucets that want matching spares, provided the 15/16-inch male thread fits.
Danco 10780 1.5 gpm Cache Aerator Kit for Delta and Moen Faucets, Red/Black
Danco 10780 1.5 gpm Cache Aerator Kit for Delta and Moen Faucets, Red/Black
Best for: Low-flow sinks and water savings
Intended for people who want to cut water use further than the standard 2.2 GPM. The kit is listed for both Delta and Moen faucets, which makes it useful for mixed households.
Key specs
- Flow rate: 1.5 GPM
- Compatibility listed: Delta and Moen faucets
Pros
- 1.5 GPM rating for lower water use
- Listed for both Delta and Moen
- Kit format includes the needed parts
Cons
- Lower flow may feel weak for some kitchen tasks
- Owners report that lower flow is not always suited to pressure-limited homes
Bottom line: Best for someone prioritizing water savings who is comfortable with lower flow.
Buying Guide
Thread size and fit
Most replacement failures come from the wrong thread. Measure the outside diameter of the existing aerator threads with calipers, or unscrew the old screen and check the stamped size on the housing. Common sizes include 15/16-inch male, and metric sizes such as M16.5 or M24. If the thread is unknown, a multi-size kit lets you test fits before committing.
Good picks for this: 28 pcs Faucet Aerators with 5 Pcs Faucet Aerator Key, Regular Standard Replacement Parts Brass Aerator 6 Pack
Flow rate
Flow is listed in gallons per minute. Delta standard aerators are commonly rated at 2.2 GPM, while some bathroom inserts are rated higher, around 4.75 GPM. Lower flow reduces water use but can feel weaker when filling large pots. Choose a rate that matches your household needs and the aerator’s intended use.
Good picks for this: Delta Faucet RP330 Aerator for 2.2 GPM, Delta Faucet RP53998 2.2 Gpm Aerator
Brand match versus generic parts
Brand-matched aerators are designed around the faucet’s internal geometry, which usually improves spray pattern and sealing. Generic inserts can work well, but owners sometimes report slight leaks or uneven spray if the fit is loose. If the faucet is under warranty or the original part is hard to identify, a brand-matched replacement reduces risk.
Good picks for this: Delta Faucet RP32529 Aerator for 2.2 GPM, Chrome, Danco 10780 1.5 gpm Cache Aerator Kit
Finish and appearance
Chrome is the most common finish on Delta kitchen and bathroom faucets. Matching the finish keeps the faucet looking uniform, especially on exposed threads near the spout. Brass shells are often hidden inside the faucet, so finish matters less there than fit.
Good picks for this: Delta Faucet RP32529 Aerator for 2.2 GPM, Chrome, Delta Faucet RP330 Aerator for 2.2 GPM, Chrome
Durability and materials
Brass shells resist cracking better than thin plastic housings, and they hold threads well over repeated removal. Screens with fine mesh clog faster with sediment, so hard water areas benefit from regular cleaning. Keep spares on hand because mineral buildup is the most common reason aerators fail.
Good picks for this: Regular Standard Replacement Parts Brass Aerator 6 Pack, Delta Faucet RP330 Aerator for 2.2 GPM, Chrome
Use case: kitchen versus bathroom
Kitchen faucets handle larger volumes and often use higher-pressure sprays, so a steady 2.2 GPM rating is usually preferred. Bathroom sinks can tolerate higher flow, but very high flow may splash. Match the aerator to the room’s primary task rather than choosing purely on price.
Good picks for this: Delta Faucet RP53998 2.2 Gpm Aerator, JQK Faucet Areator 10 Pack
Maintenance and cleaning
Unscrew the aerator every few months, rinse the screen, and soak it in white vinegar if mineral deposits are heavy. Replace the screen if it stays clogged or the spray becomes uneven. Keeping a spare insert avoids repeated trips when cleaning becomes difficult.
Good picks for this: 28 pcs Faucet Aerators with 5 Pcs Faucet Aerator Key, Danco 10780 1.5 gpm Cache Aerator Kit
FAQ
How do I know what size aerator my Delta faucet needs?
Unscrew the aerator by hand or with a pair of pliers wrapped in tape to avoid scratches. Check the housing for stamped markings, and measure the outside diameter of the male thread with calipers. Most Delta kitchen faucets use a standard male thread, but measuring is the safest way to confirm before buying.
What flow rate should I choose for a Delta aerator?
Many Delta faucets are designed around 2.2 GPM, which is a common standard for kitchen and bathroom use. Choose a lower rate if you want to conserve water, and a higher rate only if you find the current flow too weak. Verify that your faucet’s manual or original part specifies the rating.
Can I use a generic aerator on a Delta faucet?
Yes, if the thread size and internal fit match. Generic inserts sometimes work well, but owners report occasional leaks or uneven spray when the seal is not right. Check that the gasket is included and that the listing states compatibility with your faucet type.
How often should I clean or replace the aerator?
Clean the screen every few months in areas with hard water. Replace it if the spray pattern stays uneven, flow drops noticeably, or the screen shows damage. Mineral buildup is the most common cause of reduced flow.
Why is my faucet spraying water sideways after I replaced the aerator?
This usually points to a misaligned or damaged gasket, or a screen seated at an angle. Remove the aerator, check that the gasket is in place and undamaged, and reinstall it straight. If the problem continues, the insert may not match the thread geometry.
Do I need a special tool to remove a Delta aerator?
Many aerators can be removed by hand, but stubborn ones may require a removal key or a rubber grip pad. Some kits include a key for this purpose. Avoid over-tightening, which can damage the threads or crack the housing.
Conclusion
For most Delta faucets, the Delta Faucet RP330 Aerator for 2.2 GPM is the most direct replacement, especially when you want a brand-matched part. Homeowners with unknown threads or several sinks will get more value from a multi-size kit or a six-pack of brass aerators. If lowering water use is the priority, the Danco 1.5 GPM kit is worth considering, provided the reduced flow suits your household. Always confirm the thread size before buying, and consult a plumber if the faucet is under warranty or the aerator will not come loose.
Sources
- WaterSense guidance on flow rates and water-efficient faucet fixtures (epa.gov)
- Home water heating and fixture efficiency tips that explain how flow rate affects energy use (energy.gov)
- Plumbing standards and certification information for faucet fixtures and components
Related reading
- Delta Faucet Screen Replacement: 7 Best Aerator Screens Compared
- 6 Best Replace Delta Faucet Aerators (2026): Our Picks
- Trinsic Delta Kitchen Faucet Review: Features and Performance
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.
