Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
4.6Editor score
Two units included
Affordable price point
Standard chrome finish
In this guide
A dishwasher air gap is a small but vital component that prevents wastewater from flowing back into your clean dishes. It acts as a physical barrier required by many plumbing codes to ensure hygiene and safety in your kitchen setup today.
We compared ten highly rated models based on material quality, design aesthetics, and ease of installation. Each product was evaluated for durability, corrosion resistance, and compatibility with standard sink configurations to find the most reliable options available now.
Every pick includes detailed specs, pros, and cons to help you decide quickly. Note that prices and availability change frequently, so check current listings before purchasing to ensure you get the best value for your specific needs.
Top 3 Picks for Best Air Gap for Dishwasher
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel, KAG-1SFS
4.8Editor score
Premium stainless steel finish
Solid brass cover included
Universal fit design
Dishwasher Air Gap Cover, Solid Brass Air Gap Cap with Skirted Design, Brushed Nickel
4.8Editor score
Solid brass construction
Skirted aesthetic design
Brushed nickel finish
Top 10 Best Air Gap for Dishwasher in 2026 Compared
This side-by-side comparison highlights the key specifications of all ten selected air gap units to help you identify the best match for your kitchen sink and plumbing requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Spot Free All-Brite
Stainless steel finish
Solid brass cover
Nine inch height
One inch hole
4.8Editor score
Editor's Choice
Silicone Splash Guard 2-Pack
Food grade silicone
Grey or black
Water ramp design
Splash prevention
4.3Editor score
Best Premium
Brushed Nickel Brass Cap
Brushed nickel finish
Solid brass cap
Curved top design
Easy install kit
4.7Editor score
Westbrass Chrome 2-Pack
Chrome polish finish
Plastic body
Two pack value
Standard dimensions
4.6Editor score
Chrome Air Gap Kit
Polished chrome cap
Includes escutcheon
Universal fit
Seven color choices
4.6Editor score
Brushed Nickel Skirted Cap
Solid brass core
Skirted design
One inch eight diam
Prevents leaks
4.8Editor score
Matte Black Air Gap Cap
Matte black finish
Solid brass build
Skirted style
Eight color options
4.7Editor score
Prime-Line Stamped Steel
Stamped steel
Chrome plating
Push on install
Single pack unit
4.5Editor score
KRAUS Matte Black
Matte black finish
Solid brass cover
Nine inch height
Corrosion resistant
4.8Editor score
Matte Black Brass Cap
Matte black cap
High quality brass
Curved top
Includes escutcheon
4.7Editor score
1. KRAUS Spot Free All-Brite – Best Overall Air Gap
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel, KAG-1SFS
Solid brass cover
Stainless steel body
Nine inch height
Corrosion resistant
This KRAUS unit stands out as the top choice for homeowners seeking a reliable and attractive dishwasher air gap. With a 4.8 rating, it delivers on both form and function by combining a solid brass cover with a durable ABS plastic body that resists corrosion over time.
Pros
- Premium durable materials
- Meets plumbing codes
- Spot free finish
- One year warranty
- Universal design fit
Cons
- Higher price point
- Pre drilled hole needed
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The Spot Free All-Brite finish ensures that the unit maintains its high-end appearance without dulling or fading. It is designed to install flush with the sink deck for a clean look while effectively preventing wastewater from backing up into your clean dishes.
While it costs more than basic plastic options, the investment is justified by the superior build quality and the inclusion of a solid brass cover. The only minor trade-off is the requirement for a pre-drilled hole size of 1 1/2 inches, which is standard but worth verifying before installation.
If you want a long-lasting solution that matches your kitchen faucet and meets code compliance in many states, this is the model to choose. It offers peace of mind with best-in-industry customer support and a one-year warranty to back its performance.
Superior Build Quality
The combination of ABS plastic and solid brass ensures the unit withstands daily wear and tear without rusting or degrading.
Code Compliance
This model meets the plumbing code requirements found in many states, making it a safe and legal choice for professional installations.
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2. Silicone Splash Guard 2-Pack – Best Accessory Add-On
2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard
Food grade silicone
Two color options
Water ramp slope
Fits standard gaps
This 2-pack of silicone splash guards is designed to catch drips and direct water flow into the sink rather than letting it spill onto your countertops. While it is not a replacement for the actual air gap device required by codes, it is an excellent accessory for maintaining a clean kitchen environment.
Pros
- Reduces counter drips
- Safe non toxic material
- Easy to clean
- Two packs included
- Affordable accessory
Cons
- Not a full air gap
- Does not prevent backflow
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Made from 100 food food-grade silicone, these ramps are safe, odorless, and durable. They feature a 4-degree slope that helps water drain efficiently, reducing the need to frequently wipe down the area behind your sink. The grey and black options blend seamlessly with various kitchen decors.
The main limitation is that this product does not replace the air gap itself; it only manages the water that exits the air gap. Therefore, it should be used in conjunction with a proper air gap installation to ensure full compliance and protection against wastewater backup.
If you struggle with wet messes around your sink, this is a simple and inexpensive addition that makes a noticeable difference. It complements your existing setup by keeping the area dry and tidy without requiring any tools or complex installation.
Splash Prevention
The ramp design effectively catches water from the air gap cover and directs it into the sink to prevent countertop messes.
Material Safety
Constructed from food-grade silicone, these guards are safe for kitchen use and resist odors and stains over time.
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3. Brushed Nickel Brass Cap – Best Style Upgrade
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Brushed Nickel
Brushed nickel finish
Solid brass cap
Curved top design
Includes escutcheon
This replacement kit offers an elegant way to upgrade an existing air gap with a brushed nickel finish that enhances the visual appeal of your kitchen. It features a curved top design that prevents water vapor buildup, reducing the risk of paint peeling on the surrounding surfaces.
Pros
- Elegant visual appeal
- Prevents paint peeling
- Universal fit size
- Easy install process
- Durable construction
Cons
- Replacement cap only
- Check existing height
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The cap is made from high-quality brass, which provides exceptional durability and corrosion resistance compared to plastic alternatives. The matching escutcheon covers the entire air gap body and installs flush with the sink deck for a clean and finished appearance.
While it is a replacement part rather than a full kit, it is designed to fit most standard air gap bodies. You should verify the height of your existing ventilation holes and the diameter of the bottom before purchasing to ensure compatibility.
For those looking to refresh the look of their kitchen sink area without replacing the entire plumbing system, this is an ideal choice. It combines style with function by preventing moisture issues and adding a touch of sophistication to your home decor.
Aesthetic Enhancement
The brushed nickel finish adds a high-end look that complements modern kitchen designs and matches popular faucet styles.
Moisture Management
The curved top design minimizes water vapor buildup which helps maintain a flawless appearance and protects nearby paintwork.
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4. Westbrass Chrome 2-Pack – Best Value Pack
Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
Polished chrome cap
Plastic body
Two unit pack
Standard dimensions
This two-pack from Westbrass provides excellent value for homeowners who need multiple units or want a spare on hand. It features a standard air gap cap with a polished chrome finish that offers a classic look without breaking the bank.
Pros
- Two units included
- Lowest price option
- Standard fit
- Durable plastic
- Easy to source
Cons
- Plastic body
- Exposed lip when installed
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The construction includes a plastic body which is lightweight and resistant to corrosion. While it does not have the premium feel of a solid brass body, it is durable enough for daily use and meets the basic requirements for dishwasher installations.
One trade-off is that the cap leaves the lip of the air gap body exposed when installed which may not be as aesthetically pleasing as skirted designs. However, the price and convenience of getting two units make this a strong contender for budget-conscious buyers.
If you are installing multiple dishwashers or want to ensure you have a backup unit available, this pack is a practical choice. It delivers reliable performance at a fraction of the cost of premium metal options while still looking professional.
Cost Effectiveness
Buying two units at once reduces the cost per item and ensures you have a replacement ready if needed.
Standard Fit
The dimensions are designed to fit standard sink configurations making it easy to install without custom modifications.
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5. Chrome Air Gap Kit – Best Complete Kit
Dishwasher Air Gap Kits with Dishwasher Air Gap Cover and Matching Escutcheon, Replacement air gap dishwasher,Solid Brass Air Gap Cap, Polished Chrome Finish
Polished chrome cap
Includes escutcheon
Seven color choices
Universal fit
This kit offers a complete solution for upgrading your air gap with a polished chrome cap and a matching escutcheon that covers the entire body for a clean look. The solid brass construction ensures maximum durability and resistance to corrosion and rust over time.
Pros
- Matching escutcheon
- Solid brass cap
- Versatile colors
- Easy installation
- Rust resistant
Cons
- Body may vary
- Color stock depends
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One of the standout features is the availability of seven color options which allows you to perfectly match your kitchen sink and faucet. The skirted design of the cap provides a classic and sensible styling that complements any home decor style.
While it is an affordable option, the use of solid brass for the cap ensures it will last years without tarnishing. Installation is hassle-free by design so you can set it up securely without needing special tools or professional assistance.
If you want a full kit that covers all aesthetic concerns while providing reliable performance, this is a great choice. The variety of colors ensures you can find a match for your specific kitchen setup without compromising on quality or function.
Complete Coverage
The skirted cap and matching escutcheon cover the entire air gap body for a sleek and professional installation result.
Customization
With seven color options available you can choose the perfect finish to coordinate with your existing kitchen fixtures.
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6. Brushed Nickel Skirted Cap – Best Premium Design
Dishwasher Air Gap Cover for Kitchen, Solid Brass Air Gap Cap with Skirted Design, Dishwasher Overflow Vent Cap Replacement Only, Brushed Nickel
Solid brass core
Skirted design
One inch eight diam
Brushed nickel
This premium cover combines a solid brass core with a brushed nickel finish to offer exceptional durability and a stylish look. The skirted design covers the entire air gap tubing and installs flush with the countertop for a seamless integration into your kitchen.
Pros
- Solid brass build
- Prevents stains
- Skirted aesthetics
- Flush installation
- Easy maintenance
Cons
- Replacement part only
- Verify existing fit
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The curved top prevents water accumulation which avoids paint peeling and maintains a flawless appearance over time. It effectively prevents dirty water from flowing back into the dishwasher ensuring a clean and dry kitchen environment free from cross-contamination risks.
While it is a replacement cap only you should check the height of your existing ventilation holes and the diameter of the bottom to ensure compatibility. However, the standard dimensions make it suitable for most air gap bodies of dishwashers on the market today.
If you prioritize longevity and aesthetics in your kitchen hardware this is an excellent investment. The removable design simplifies routine maintenance and blockage clearing while the smooth surface allows for easy cleaning without leaving water stains.
Premium Material
The solid brass core ensures the unit resists rust and corrosion providing years of reliable performance in wet environments.
Design Detail
The skirted design and flush installation create a clean look that enhances the overall aesthetic of your sink area.
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7. Matte Black Air Gap Cap – Best Modern Look
Dishwasher Air Gap Cover Black only, Skirted, Replacement Black air gap dishwasher,Solid Brass,Matte Black Finish
Matte black finish
Solid brass build
Skirted style
Standard size
This matte black cap brings a modern and sophisticated touch to your kitchen sink with its solid brass construction and classic skirted design. It fits most brands air gap bodies and installs flush with the sink deck for a clean and professional appearance.
Pros
- Stylish matte finish
- Solid brass core
- Skirted design
- Eight color options
- Durable construction
Cons
- Replacement part only
- Color availability
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The matte finish is highly resistant to corrosion and rust ensuring that the unit offers years of reliable performance without showing wear. The classic styling complements any home decor making it a versatile choice for those updating their kitchen aesthetics.
As a replacement cap you should confirm your existing air gap dimensions before purchase to ensure a perfect fit. The standard size makes it widely compatible but checking the height and diameter avoids any potential issues with installation or appearance.
If you want a durable and stylish option that matches modern black fixtures this is a strong contender. The solid brass build guarantees longevity while the matte black finish adds a touch of elegance to your everyday kitchen space.
Modern Finish
The matte black finish provides a sleek look that pairs well with contemporary kitchen designs and matte black faucets.
Durability
Solid brass construction ensures the cap resists rust and provides a long service life in moist kitchen environments.
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8. Prime-Line Stamped Steel – Best Basic Option
Prime-Line MP53045 Dishwasher Air Gap Cover, Stamped Steel, Chrome Plated Finish (Single Pack)
Stamped steel
Chrome plating
Push on install
Single pack
This basic cover is constructed from stamped steel with a chrome plated finish to provide a reliable and affordable solution for your dishwasher air gap. It features a simple push-on installation that makes it easy to fit over most air gaps without tools.
Pros
- Simple design
- Push on fit
- Affordable price
- Chrome finish
- Widely available
Cons
- Basic materials
- Single unit
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Designed to vent air or water from your dishwasher it serves its primary function effectively. The chrome finish adds a touch of shine but it is a standard component that focuses on utility rather than premium aesthetics.
While it is a single pack option it is priced very competitively which makes it suitable for temporary fixes or budget installs. The main trade-off is the basic material which may not last as long as brass options in harsh conditions.
If you need a quick and easy replacement that gets the job done this is a practical choice. It is ideal for those who prioritize cost and simplicity over decorative features in their kitchen plumbing setup.
Ease of Use
The push-on design allows for quick installation without requiring specialized tools or complicated plumbing adjustments.
Functionality
This cover effectively vents air and water from the dishwasher ensuring proper drainage and preventing backflow issues.
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9. KRAUS Matte Black – Best Color Variant
KRAUS Dishwasher Air Gap in Matte Black, KAG-1MB
Matte black finish
Solid brass cover
Nine inch height
One inch hole
This KRAUS model brings the same high-quality construction as its stainless steel version but in a modern matte black finish. It features a solid brass cover for superior durability and a high-end appearance that complements contemporary kitchen styles.
Pros
- High durability
- Code compliant
- Matte finish
- Clean look
- Premium brand
Cons
- Pre drilled hole
- Higher price
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The product prevents wastewater from backing up into your dishwasher eliminating the risk of contaminating clean dishes. It is designed to install flush with the sink deck for a clean look that matches your kitchen faucet and decor perfectly.
While it requires a pre-drilled hole of 1 1/2 inches which is standard for most installations the overall quality justifies the setup effort. The premium corrosion-resistant finish will not dull or fade over time ensuring long-term aesthetic appeal.
If you want a stylish and robust air gap that meets all plumbing code requirements this is a top recommendation. It offers the reliability of the KRAUS brand with a finish that stands out in modern kitchens.
Finish Quality
The matte black finish is premium and resistant to corrosion ensuring it stays looking new despite exposure to water and moisture.
Reliable Performance
The solid brass cover and ABS plastic body provide a lifetime of reliable performance for your dishwasher setup.
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10. Matte Black Brass Cap – Best Matte Replacement
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Matte Black
Matte black cap
High quality brass
Curved top
Includes escutcheon
This replacement kit offers a high-quality matte black finish that enhances the visual appeal of your kitchen sink area. It is made from premium brass and includes a matching escutcheon to cover the entire air gap body for a clean and finished look.
Pros
- Matte black finish
- Curved top design
- Includes escutcheon
- Easy installation
- Durable brass
Cons
- Replacement only
- Check height
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The curved top design helps prevent water vapor buildup which reduces the risk of paint peeling and maintains a flawless appearance over time. It fits most standard kitchen sinks and dishwashers making it a versatile option for many households.
While it is a replacement part you should check the existing height of your ventilation holes to ensure compatibility. The hassle-free installation process requires no special tools so you can upgrade your setup quickly and securely.
If you want to update your air gap to match modern matte fixtures this is an excellent choice. It combines style with durability ensuring your kitchen looks professional while functioning reliably to prevent wastewater issues.
Aesthetic Upgrade
The matte black finish adds a sleek touch that matches contemporary kitchen designs and black plumbing fixtures perfectly.
Protection
The curved top design minimizes vapor buildup which protects nearby paintwork and maintains the unit's clean appearance.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Choosing the right air gap involves considering material quality, design, and compatibility with your existing plumbing. This guide breaks down the essential factors to ensure you get a unit that is both functional and stylish.
Material Quality
The material of your air gap cap and body affects its durability and resistance to corrosion. Solid brass caps are preferred for their longevity and high-end look compared to plastic options. Brass resists rust and wear in wet environments ensuring your unit lasts longer without showing signs of degradation.
Finish and Aesthetics
The finish of the air gap should complement your kitchen sink and faucet to maintain a cohesive look. Options range from polished chrome and brushed nickel to matte black and stainless steel. Choose a finish that matches your existing fixtures to avoid a disjointed appearance in your kitchen.
Code Compliance
Many states require air gaps by plumbing code to prevent wastewater from contaminating your clean dishes. Ensure the model you choose meets these local requirements to avoid issues during inspections or future home sales. A compliant unit provides peace of mind and legal safety for your installation.
Installation Requirements
Check the size requirements for the pre-drilled hole and the dimensions of the air gap body before purchasing. Most standard units fit a 1 1/2 inch hole but variations exist. Knowing your existing measurements ensures you can install the unit securely without needing to modify your sink deck.
Kit vs Replacement
Decide whether you need a complete kit with the body and cap or just a replacement cap for an existing unit. Kits offer a fresh start with all parts matched whereas caps are cheaper if the body is intact. Consider the condition of your current setup to choose the best approach.
Design Style
The design style such as skirted or exposed lip affects how the unit looks when installed. Skirted designs cover the air gap body for a cleaner flush appearance while exposed lip models leave part of the body visible. Choose based on your preference for a seamless or utilitarian look.
Warranty and Support
A warranty protects your investment by covering defects and ensuring you have customer support if issues arise. Brands like KRAUS offer one-year warranties with strong support networks. Prioritize products with warranties to ensure you are covered for the long term.
Accessory Compatibility
Consider if you need accessories like silicone splash guards to manage water drips from the air gap. These accessories help keep countertops dry and tidy without replacing the main unit. Adding a splash guard can improve functionality and cleanliness around your sink area.
How to Use and Care for Your Air Gap
Avoid using harsh chemicals to clean the finish which can damage the corrosion-resistant coating. Use mild soap and water to wipe the surface regularly to maintain its appearance and ensure the unit continues to function efficiently.
Frequently Asked Questions
Do I really need an air gap for my dishwasher?
In many states and municipalities plumbing codes mandate an air gap to prevent wastewater from siphoning back into your dishwasher. It is a critical safety feature that protects your dishes from contamination. Without it you could face violations or health risks.
How do I know which size to buy?
Most standard air gaps fit a 1 1/2 inch pre-drilled hole in your sink deck. Measure the height of your existing air gap body if you are buying a replacement cap to ensure the new one fits correctly. Always check the product specs before purchasing to match your setup.
What materials are best for air gaps?
Solid brass is considered the best material for air gap caps due to its durability and resistance to corrosion. Brass lasts longer than plastic and offers a more premium look that matches quality kitchen fixtures. Plastic bodies are common but brass caps add significant value.
How do I clean the air gap?
To clean the air gap remove the top cap and rinse it under warm water with mild soap. Inspect the inside for debris or buildup and clear any blockages that could prevent proper airflow. Wipe the exterior with a soft cloth to maintain the finish.
Why is my air gap leaking?
Leaking often indicates a blockage in the drain line or the air gap itself. Check for debris clogging the cap or the drain hoses. Clearing the blockage usually resolves the issue but persistent leaks may require professional plumbing inspection.
Can I use a high loop instead of an air gap?
Some areas allow a high loop as an alternative but an air gap is more reliable for preventing backflow. Always check local plumbing codes to see what is legally required for your specific location. An air gap is the safest option regardless of local allowances.
Does the color affect function?
No the color of the finish is purely aesthetic and does not impact the performance of the air gap. However choose a finish that resists corrosion like matte or chrome to maintain appearance over time. The function depends on the internal structure not the color.
When should I replace my air gap?
Replace your air gap if the cap is damaged or rusted or if it no longer prevents backflow effectively. If the unit is scratched or faded beyond repair consider upgrading to a new kit for a better look. Regular maintenance can extend its lifespan significantly.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
Remember that prices and availability change often so check current listings for the best deals on these models. Whether you choose a full kit or a replacement cap ensure it meets your specific needs for style and performance in your kitchen setup today.