Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
4.6Editor score
Plastic body with polished chrome cap
Standard cap diameter for compatibility
Includes two units for replacements
In this guide
A dishwasher air gap is a critical plumbing component that prevents wastewater from flowing back into your machine. It ensures your clean dishes stay sanitary and free from contamination during the drain cycle. Installing one correctly protects your home and maintains compliance with local plumbing codes.
We evaluated ten highly rated air gap units based on build quality, design, and user feedback. Our analysis focused on materials, ease of installation, and compatibility with standard sink setups. This list covers full kits and replacement caps to suit various budget and aesthetic needs.
Each selection highlights key strengths and practical considerations for everyday use. You will find options in stainless steel, brass, and multiple finishes to match your kitchen. Please note that prices fluctuate frequently so check current listings before purchasing your final choice.
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
Solid brass cover for durability
Corrosion-resistant finish resists rust
Universal design fits all dishwashers
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Brushed Nickel
4.7Editor score
Premium brass construction for longevity
Curved top prevents water vapor buildup
Skirted design offers a clean look
Top 10 Best Air Gap for Dishwasher in 2026 Compared
The following table provides a side-by-side look at the key specifications and features of each model we reviewed. Use this overview to quickly identify which unit fits your sink requirements and style preferences.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel, KAG-1SFS
Height 9 inches with body
Cap diameter 1 7/8 inches
Pre-drilled hole 1 1/2 inches
Solid brass cover included
4.8Editor score
Editor's Choice
2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard, 4 Degree Overflow Spout Extender for Dishwasher,Universal Accessory For Dishwasher Air Gap,Replacement Dishwasher Air Gap (Grey,Black)
Inner hole size 1 5 inches
Made from 100 food grade silicone
4 degree slope for better drainage
Includes grey and black options
4.3Editor score
Best Premium
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Brushed Nickel
Cap diameter 1 8 inches
Skirted air gap cap design
Brushed nickel finish for style
Easy installation without special tools
4.7Editor score
Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
Cap diameter 1 5/8 inches
Overall height 9 inches
Plastic body included standard cap
Two units per package
4.6Editor score
Dishwasher Air Gap Kits with Dishwasher Air Gap Cover and Matching Escutcheon, Replacement air gap dishwasher,Solid Brass Air Gap Cap, Polished Chrome Finish
Solid brass cap with flange
Matches sink or faucet color
Skirted design for clean look
Universal fit for most units
4.6Editor score
Dishwasher Air Gap Cover for Kitchen, Solid Brass Air Gap Cap with Skirted Design, Dishwasher Overflow Vent Cap Replacement Only, Brushed Nickel
Cap diameter 1 80 inches
Height 2 28 inches
Brushed nickel finish resists stains
Slips on base for secure fit
4.8Editor score
Dishwasher Air Gap Cover Black only, Skirted, Replacement Black air gap dishwasher,Solid Brass,Matte Black Finish
Matte black finish option
Solid brass construction cap
Fits standard air gap bodies
Skirted design covers tubing
4.7Editor score
Prime-Line MP53045 Dishwasher Air Gap Cover, Stamped Steel, Chrome Plated Finish (Single Pack)
Stamped steel construction
Chrome plated finish
Push on installation style
Single pack unit
4.5Editor score
KRAUS Dishwasher Air Gap in Matte Black, KAG-1MB
Height 9 inches with body
Cap diameter 1 7/8 inches
Solid brass cover included
Matte black finish style
4.8Editor score
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Matte Black
Cap diameter 1 8 inches
Matte black finish design
Skirted cap with escutcheon
Hassle-free installation process
4.7Editor score
1. KRAUS Air Gap – Best Overall Protection
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel, KAG-1SFS
Height 9 inches overall
Cap diameter 1 7/8 inches
Solid brass cover included
Pre-drilled hole 1 1/2 inches
This model stands out as a top choice for homeowners seeking reliable performance. It holds a high rating of 4.8 and is widely praised for its build quality and code compliance. The combination of a durable ABS plastic body and a solid brass cover ensures it will last for years.
Pros
- Superior durability with brass cover
- Corrosion resistant finish lasts
- Universal design for all units
- Clean look flush to countertop
- One year warranty support
Cons
- Premium price point
- Requires specific hole size
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The standout quality is the premium corrosion resistant finish that does not dull over time. It prevents wastewater from backing up into your dishwasher which eliminates the risk of contaminating your clean dishes. The cap covers the entire air gap body and installs flush to the sink deck for a clean look.
While the price is higher than some basic plastic options the durability justifies the cost. You may need to ensure your pre drilled hole size matches the requirement of 1 1/2 inches for a perfect fit. This is a minor consideration given the overall reliability and aesthetic appeal of the unit.
If you want a long term solution that looks high end and meets plumbing codes this is an excellent pick. It is ideal for those upgrading their kitchen or replacing an old unit with one that offers superior resistance to rust and corrosion.
Superior Material Quality
The solid brass cover offers a high end appearance and superior durability compared to all plastic units.
Code Compliance Assurance
Air gaps are required by plumbing codes in many states making this a necessary safe choice for installations.
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2. Silicone Splash Guard – Best Accessory
2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard
Inner hole size 1.5 inches
Dimensions 5.12 by 2.1 inches
Made from 100 food grade silicone
Includes grey and black options
This accessory is designed to catch drips and direct water flow into the sink reducing the need to wipe down counter tops. It fits snugly around most air gap cover diameters with an inner hole size of 1.5 inches. Many users appreciate the convenience of having two colors in the box.
Pros
- Catches drips effectively
- Easy to clean silicone material
- Helps keep countertops dry
- Affordable accessory solution
- Two color choices included
Cons
- Does not replace the main unit
- Silicone can collect dust
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The silicone splash guard is made from 100 food grade silicone which is safe and odorless. It is more durable and easy to clean than other materials ensuring long lasting use. The 4 degree slope helps water drain better so there is no more wet mess behind the sink.
While it is a great addition it does not replace the main air gap unit itself. Some users find that silicone can collect dust or lint over time if not cleaned regularly. It works best when paired with a standard air gap to keep the area tidy.
If you want to enhance the look of your sink and keep it dry this is a practical choice. It is ideal for renters or homeowners who want a quick fix for minor splashing without replacing the whole plumbing component.
Effective Drainage
The 4 degree slope helps water drain better keeping your countertop dry and clean efficiently.
Safe Material Choice
Made from 100 food grade silicone ensuring safety and ease of cleaning for everyday use.
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3. Brushed Nickel Cap – Best Design
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Brushed Nickel
Cap diameter 1.8 inches
Skirted air gap cap design
Brushed nickel finish for style
Curved top prevents buildup
This kit features a high end brushed nickel finish that enhances the visual appeal of your kitchen. The curved top design prevents water vapor buildup reducing the risk of paint peeling and maintaining a flawless appearance over time. It is rated 4.7 and praised for its elegant styling.
Pros
- High end brushed nickel finish
- Curved top prevents vapor buildup
- Easy installation without tools
- Universal fit for most sinks
- Reduces risk of paint peeling
Cons
- Only includes cap and skirt
- May not fit all models
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The cap has a diameter of 1.8 inches with matching air gap pipes for compatibility. The skirted design along with the matching escutcheon covers the entire air gap body and installs flush with the sink deck. This offers a clean appearance that complements any home decor.
While it offers a stylish upgrade it only includes the cap and skirt not the full unit. You must ensure your existing air gap pipes measure 7/8 and 5/8 inches to ensure a perfect fit. This is a great option for replacing old worn out caps quickly.
If you want to refresh the look of your kitchen sink without changing the plumbing this is ideal. It is best for those who need a durable brass cap that provides effective backflow prevention and looks premium.
Vapor Prevention
The curved top design prevents water vapor buildup reducing the risk of paint peeling and maintenance issues.
Durable Construction
Made from high quality brass with durable ABS plastic body ensuring exceptional durability and corrosion resistance.
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4. Westbrass Two Pack – Best Value
Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
Cap diameter 1 5/8 inches
Overall height 9 inches
Plastic body included standard cap
Two units per package
This set offers great value with two units in the pack for a low price. It features a standard air gap cap with a plastic body and polished chrome finish. The rating of 4.6 indicates solid performance for basic plumbing needs.
Pros
- Includes two units per pack
- Standard cap diameter fits many
- Affordable price point
- Polished chrome finish look
- Easy to find replacement
Cons
- Plastic body less durable
- Cap leaves lip exposed
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The cap diameter is 1 5/8 inches with an overall height of 9 inches. The 5/8 inlet and 7/8 outlet sizes match standard requirements. While the cap leaves the lip of the air gap body exposed it still provides effective ventilation and backflow prevention.
The plastic body is lighter and less durable than brass options but suitable for standard use. Some users might prefer a cover that hides the entire body for a cleaner look. However the two pack allows you to keep a spare on hand for replacements.
If you are on a budget or need a spare unit this is a practical choice. It is ideal for contractors or homeowners who want a functional air gap without spending extra on premium materials.
Standard Fit
The 1 5/8 inch cap diameter and standard pipe sizes ensure it fits most common air gap setups.
Two Pack Benefit
Getting two units in the package ensures you have a spare ready for future replacements or projects.
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5. Air Gap Kit – Best Upgrade
Dishwasher Air Gap Kits with Dishwasher Air Gap Cover and Matching Escutcheon
Solid brass cap with flange
Skirted design for clean look
Seven color options available
Includes matching escutcheon
This kit includes a solid brass cap with flange and plastic body to fit most dishwashers. It offers seven color options so you can choose to match your kitchen sink and faucet. The rating of 4.6 reflects satisfaction with the classic design and value.
Pros
- Solid brass construction cap
- Matches sink or faucet color
- Universal fit for most units
- Classic design styling
- Includes matching escutcheon
Cons
- Installation may require alignment
- Color match requires selection
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The skirted air gap cap covers with matching escutcheon and installs flush to the sink deck for a clean look. It prevents wastewater from backing up into your dishwasher eliminating the risk of contaminating clean dishes. The brass cap is resistant to corrosion and rust for reliable performance.
Choosing the right color requires checking your existing hardware so you may need to measure or compare samples. The installation is designed to be hassle free but ensuring the cap sits flush might take a bit of patience. This is a small effort for a polished finish.
If you want a complete upgrade that looks custom and built to last this kit is recommended. It is perfect for those renovating a kitchen and want the air gap to blend seamlessly with other fixtures.
Custom Color Match
Seven color options allow you to perfectly match your air gap cap with your kitchen sink and faucet.
Complete Kit
Includes the cap and matching escutcheon to cover the entire air gap body for a professional appearance.
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6. Brushed Nickel Cover – Best Finish
Dishwasher Air Gap Cover for Kitchen, Solid Brass Air Gap Cap with Skirted Design
Cap diameter 1.80 inches
Height 2.28 inches
Brushed nickel finish resists stains
Slips on base for secure fit
This cover combines a solid brass core with a brushed nickel finish for a durable and stylish look. It rates 4.8 and is engineered for longevity with excellent corrosion resistance. The curved top prevents water accumulation to avoid paint peeling over time.
Pros
- Solid brass core longevity
- Curved top prevents accumulation
- Flush with countertop look
- Stain resistant surface clean
- Universal size compatibility
Cons
- Requires check of existing hole
- Not a full unit
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The dimensions are standard with a cap diameter of 1.80 inches and a height of 2.28 inches. It fits most air gap bodies of dishwashers and installs flush with the countertop for a clean look. The smooth stain resistant surface allows easy cleaning and maintenance.
You should check the height of the existing ventilation holes and diameter before purchasing to ensure compatibility. Since this is a replacement cover it does not replace the body or pipes. This makes it ideal for cosmetic upgrades without plumbing changes.
If you want to improve the look of your existing air gap and protect against rust this is a strong option. It is best for homeowners seeking a reliable finish that matches modern kitchen fixtures.
Stain Resistance
The smooth stain resistant surface allows easy cleaning and the removable design simplifies routine maintenance and blockage clearing.
Aesthetic Appeal
The brushed nickel finish and skirted design create a clean look that matches your kitchen ideally.
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7. Matte Black Cover – Best Color Option
Dishwasher Air Gap Cover Black only, Skirted, Replacement Black air gap dishwasher,Solid Brass,Matte Black Finish
Matte black finish option
Solid brass construction cap
Skirted design covers tubing
Classic design styling
This cover offers a matte black finish that adds a modern touch to your kitchen. It is rated 4.7 and made from solid brass construction for maximum durability. The classic design complements any home and installs flush to the sink deck.
Pros
- Matte black finish style
- Solid brass durable cap
- Resistant to corrosion rust
- Classic design and styling
- Universal standard size fit
Cons
- Check color match carefully
- Replacement only not full kit
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The skirted air gap cap covers the entire air gap body to hide plumbing tubing. It fits most brand air gap bodies with a standard size design. The brass material is resistant to corrosion and rust for years of reliable performance.
Since it is a cover only you must have a functioning air gap body in place already. Ensure your existing unit matches the standard size before buying. The matte black may show fingerprints so regular cleaning helps maintain the finish.
If you are aiming for a modern black kitchen theme this is a great way to match your fixtures. It is suitable for those replacing a worn cap or adding a splash of contrast to their sink area.
Modern Style
The matte black finish allows you to choose a color that perfectly matches your kitchen sink and faucet.
Long Life
Solid brass construction cap offers years of reliable performance and longer service life value for money.
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8. Prime-Line Cover – Simple Fix
Prime-Line MP53045 Dishwasher Air Gap Cover, Stamped Steel, Chrome Plated Finish (Single Pack)
Stamped steel construction
Chrome plated finish
Push on installation style
Single pack unit
This cover is made from stamped steel with a chrome plated finish for a basic look. It is designed to fit over most air gaps for dishwashers and offers easy push on installation. The rating of 4.5 shows it works well for simple needs.
Pros
- Easy push on installation
- Fits most air gaps
- Chrome plated finish look
- Simple single pack unit
- Affordable basic replacement
Cons
- Stamped steel may corrode
- Basic design only
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It is lightweight and inexpensive which makes it a good quick fix. The chrome finish matches standard sink accessories but may not be as durable as brass. You get one unit in the package for immediate replacement.
Steel can eventually corrode so it may not last as long as brass or plastic options. This is acceptable for temporary fixes or budget projects where aesthetics are secondary. It is a standard solution for venting air or water from your dishwasher.
If you need a cheap and quick cover for an older unit this is practical. It is ideal for homeowners who want a functional solution without spending much on premium materials.
Simple Installation
Easy push on installation over the air gap of your dishwasher simplifies the replacement process.
Standard Fit
Designed to fit over most air gaps for dishwashers ensuring compatibility with common models.
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9. KRAUS Matte Black – Best Full Unit
KRAUS Dishwasher Air Gap in Matte Black, KAG-1MB
Height 9 inches overall
Solid brass cover included
Corrosion resistant finish
Universal design compatible
This unit is a complete solution with a durable ABS plastic body and solid brass cover. It is rated 4.8 and features a premium corrosion resistant finish that will not dull or fade over time. The matte black finish complements modern faucet styles.
Pros
- Matte black finish style
- Solid brass cover durability
- Corrosion resistant finish
- Universal design for all units
- One year warranty support
Cons
- Premium price point
- Requires specific hole size
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The cap covers the entire air gap body and installs flush to the sink deck for a clean look. It prevents wastewater from backing up into your dishwasher eliminating the risk of contaminating your clean dishes. The universal design is compatible with all dishwashers on the market.
While the price is higher the inclusion of the full unit justifies the cost. Ensure your pre drilled hole size requirement is 1 1/2 inches before purchasing. This is a minor requirement given the high quality and code compliance of the product.
If you want a full kit that looks sleek and matches black fixtures this is excellent. It is perfect for those who need a reliable unit that meets plumbing codes and offers long term protection.
Code Compliant
Air gaps are required for dishwasher installations by plumbing codes in many states ensuring safe compliance.
Satisfaction Guaranteed
1 Year Warranty provides satisfaction guaranteed with best in industry customer support that puts you first.
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10. Matte Black Kit – Best Complete Look
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Matte Black
Cap diameter 1.8 inches
Matte black finish design
Skirted cap with escutcheon
Hassle-free installation process
This kit features a high end matte black finish that enhances the visual appeal of your kitchen. The curved top design prevents water vapor buildup reducing the risk of paint peeling. It is rated 4.7 and praised for its elegant styling and durability.
Pros
- High end matte black finish
- Curved top prevents buildup
- Universal fit perfect size
- Easy installation no tools
- Durable brass construction
Cons
- Cap only not body
- Check pipe sizes first
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The cap has a diameter of 1.8 inches with matching air gap pipes for compatibility. The skirted cap along with the matching escutcheon covers the entire air gap body and installs flush with the sink deck. This offers a clean appearance that complements any home decor.
While it offers a stylish upgrade it only includes the cap and skirt not the full unit. You must ensure your existing air gap pipes measure 7/8 and 5/8 inches to ensure a perfect fit. This is a great option for replacing old worn out caps quickly.
If you want to refresh the look of your kitchen sink without changing the plumbing this is ideal. It is best for those who need a durable brass cap that provides effective backflow prevention and looks premium.
Prevents Peeling
The curved top design prevents water vapor buildup reducing the risk of paint peeling and maintaining appearance.
Simple Setup
Enjoy a hassle-free installation process with no special tools to quickly secure it to your sink deck.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Selecting the right air gap involves considering materials, size, and style. Use these factors to find a unit that meets code and matches your kitchen.
Material Durability
The material of your air gap affects how long it lasts and how it resists corrosion. Brass covers offer superior durability and a high end appearance while plastic bodies are lighter and more affordable. Look for units with premium corrosion resistant finishes to ensure the cover does not dull or fade over time.
Code Compliance
Many local plumbing codes require air gaps for dishwasher installations to prevent backflow contamination. Always check your local regulations before buying. A compliant unit will include all necessary components and specifications to meet safety standards.
Dimensions and Fit
Measure your sink deck hole and existing air gap pipes to ensure compatibility. Most units require a 1 1/2 inch pre drilled hole and match standard pipe diameters of 5/8 and 7/8 inches. Confirm the cap diameter and overall height match your existing setup.
Finish and Style
Choose a finish like polished chrome brushed nickel or matte black to match your kitchen faucet. The skirted design and matching escutcheon provide a clean look that installs flush to the sink deck. This ensures the unit blends seamlessly with your kitchen decor.
Installation Ease
Look for units designed for hassle-free installation without special tools. The cap should cover the entire air gap body for a professional appearance. A simple push on or screw on design saves time and effort during setup.
Warranty and Support
A one year warranty or longer indicates manufacturer confidence in the product quality. Good customer support helps resolve any installation issues quickly. Check for brands that offer satisfaction guarantees to protect your investment.
Complete Kit vs. Cover
Decide if you need a full unit or just a replacement cover. Kits with solid brass caps and matching escutcheons are ideal for upgrades while cover only options save cost if the body is functional. Ensure the unit you select meets your needs.
Maintenance Requirements
Regular cleaning prevents blockage and ensures proper drainage. Smooth stain resistant surfaces are easier to wipe down and maintain. Choose a design that allows easy access for routine maintenance.
How to Use and Care for Your Air Gap for Dishwasher
After installation test the unit by running the dishwasher cycle to ensure proper drainage. Check for any leaks around the base and ensure the cap is seated securely.
Frequently Asked Questions
Do I really need an air gap for my dishwasher?
Yes most local plumbing codes require air gaps to prevent wastewater from flowing back into your dishwasher. Without one contaminated water can back up and contaminate your clean dishes. This is a critical safety component.
What happens if my dishwasher air gap leaks?
Leaks usually indicate a blockage in the drain line or the air gap itself. To fix this remove the cap and clear any debris from the tubes. Check that the drain hose is installed correctly without kinks.
Can I replace just the air gap cover?
Yes you can replace just the cover if the body and pipes are still functional. Ensure the new cap matches the diameter and style of your existing unit. This is a cost effective way to upgrade aesthetics.
How do I choose the right finish?
Match the finish to your kitchen faucet or sink hardware for a cohesive look. Common options include polished chrome brushed nickel and matte black. Consider the existing color scheme of your kitchen.
Is installation difficult for a DIYer?
Most air gap units are designed for DIY installation with basic tools. Ensure you have the correct hole size and align the cap properly. Follow the manufacturer instructions for best results.
Are plastic air gaps less durable than brass?
Plastic bodies are lighter and more affordable but brass covers offer superior durability and corrosion resistance. Brass is less likely to degrade over time in moist environments. Choose brass for long term value.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
We covered ten top models including full kits and replacement covers to suit various needs. The KRAUS options stand out for durability while the Westbrass pack offers great value. Use our reviews to find the best match for your sink.