Westbrass Plastic Air Gap
4.6Editor score
Durable plastic body construction
Polished chrome finish style
Standard cap diameter size
In this guide
Choosing the right air gap for dishwasher installation is crucial for preventing wastewater from backing up into your clean dishes. A reliable unit ensures hygiene and meets plumbing code requirements in many regions. We have reviewed the most durable and stylish options available on the market today.
Our team analyzed ten top-rated products based on construction quality, design aesthetics, and ease of installation. We considered factors like material durability, finish options, and universal compatibility with various sink setups to create this comprehensive list for homeowners.
Each pick highlights specific strengths such as premium brass construction or sleek finishes to match your kitchen decor. Please note that availability and pricing can fluctuate over time, so check the latest details before making your final purchase decision for your home.
Top 3 Picks for Best Air Gap for Dishwasher
KRAUS Dishwasher Air Gap
4.8Editor score
Solid brass cover durability
Spot free stainless steel finish
Universal design compatibility
Dishwasher Air Gap Cover
4.8Editor score
Solid brass core structure
Brushed nickel finish style
Skirted design aesthetic
Top 10 Best Air Gap for Dishwasher in 2026 Compared
Here is a side-by-side comparison of the ten best air gap for dishwasher models to help you evaluate their specifications and features quickly.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Dishwasher Air Gap KAG-1SFS
Solid brass cover material
Stainless steel finish option
9 inch overall height
1 1/2 inch hole
4.8Editor score
Editor's Choice
2-Pack Dishwasher Air Gap Cover
Silicone splash guard material
5.12 inch width size
4 degree slope design
Grey and black colors
4.3Editor score
Best Premium
Dishwasher Air Gap Cover Kit
Solid brass cap body
Brushed nickel finish style
ABS plastic gap body
1.8 inch cap diameter
4.7Editor score
Westbrass Plastic Air Gap D200P-CP-PK
Plastic body construction
Polished chrome finish style
2 pack included box
1-5/8 inch cap diameter
4.6Editor score
Dishwasher Air Gap Kits
Solid brass cap option
Polished chrome finish style
Flange and escutcheon
Universal fit design
4.6Editor score
Dishwasher Air Gap Cover
Solid brass core structure
Brushed nickel finish style
Skirted design aesthetic
1.80 inch cap diameter
4.8Editor score
Dishwasher Air Gap Cover Black
Solid brass cap material
Matte black finish style
Skirted design aesthetic
Standard size fit
4.7Editor score
Prime-Line MP53045 Dishwasher Cover
Stamped steel material
Chrome plated finish style
Push on installation type
Single pack included
4.5Editor score
KRAUS Dishwasher Air Gap KAG-1MB
Solid brass cover material
Matte black finish style
ABS plastic body option
Universal design fit
4.8Editor score
Dishwasher Air Gap Cover
Solid brass cap material
Matte black finish style
ABS plastic body option
Skirted design aesthetic
4.7Editor score
1. KRAUS Dishwasher Air Gap – Best Overall Air Gap for Dishwasher
KRAUS Dishwasher Air Gap
Solid brass cover material
Stainless steel finish option
ABS plastic body core
1 1/2 inch hole
This KRAUS model stands out as a top choice for homeowners seeking reliability and style in their kitchen plumbing setup. With a high rating of 4.8 stars, it is praised for its durable construction and sleek stainless steel finish that resists fingerprints and corrosion.
Pros
- Superior corrosion resistance
- High-end appearance style
- Prevents backflow effectively
- Universal design fit
- Includes 1 year warranty
Cons
- Requires precise hole drilling
- Higher price point
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The product features a solid brass cover paired with a durable ABS plastic body, ensuring long-term performance without rusting or fading over time. Its universal design makes it compatible with all dishwashers on the market, and it effectively prevents wastewater from backing up into your clean dishes.
While it requires a pre-drilled hole size of 1 1/2 inches, which might need extra planning, the clean look and flush installation to the sink deck make the effort worthwhile. The 1 year warranty adds peace of mind for users investing in this premium component.
Homeowners who value both function and aesthetics in their kitchen should choose this model to ensure compliance with plumbing codes while maintaining a polished look. It is an excellent investment for anyone looking to upgrade their dishwasher drainage system with a high-quality air gap.
Durable Construction Quality
The combination of solid brass and ABS plastic ensures the unit withstands harsh kitchen environments without degrading.
Aesthetic Integration
Spot free stainless steel finish complements modern kitchen faucets and sink decks for a seamless look.
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2. 2-Pack Dishwasher Air Gap Cover – Best Silicone Splash Guard
2-Pack Dishwasher Air Gap Cover
Food-grade silicone material
5.12 inch width size
4 degree slope design
Grey and black colors
This accessory is designed to complement your existing air gap setup by catching drips and directing water flow into the sink. Rated 4.3 stars, it is a practical addition for keeping your countertop dry and clean around the sink area.
Pros
- Catch drips effectively
- Easy to clean
- Affordable two pack option
- Stylish color choices
- Reduces counter wiping
Cons
- Not a primary air gap
- Requires existing air gap
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Made from 100% food-grade silicone, it is safe, odorless, and durable enough for daily kitchen use. The 4 degree slope helps drain water efficiently, preventing wet mess behind the sink and reducing the need to wipe down surfaces frequently.
While it does not replace the main air gap unit, it serves as an effective splash guard for those dealing with minor leaks or overflow issues. The grey and black color options blend seamlessly with various kitchen décors to enhance the overall aesthetic.
Anyone looking to maintain a clean sink area without major plumbing changes will find this silicone guard a useful and affordable accessory. It is best used as a supplement to a properly installed air gap for optimal performance.
Efficient Water Drainage
The sloped design ensures water flows quickly into the sink rather than pooling on the countertop surface.
Versatile Design
Available in grey and black to match different sink colors and kitchen styles for a cohesive look.
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3. Dishwasher Air Gap Cover Kit – Best Brushed Nickel Option
Dishwasher Air Gap Cover Kit
Solid brass cap material
Brushed nickel finish style
ABS plastic gap body
1.8 inch cap diameter
This replacement kit is ideal for upgrading an existing air gap with a stylish brushed nickel cap that enhances kitchen aesthetics. It receives a 4.7 rating for its efficient backflow prevention and premium brass construction that resists corrosion.
Pros
- Prevents backflow effectively
- High-end brushed nickel
- Curved top design
- Universal fit size
- Easy installation
Cons
- Check hole diameter
- Replacement only item
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The curved top design prevents water vapor buildup which reduces the risk of paint peeling and maintains a flawless appearance over time. Its universal fit makes it suitable for most kitchen sinks and dishwashers with standard pipe dimensions.
Installation is hassle-free and requires no special tools allowing you to set it up quickly. However you should verify your existing hole size before purchase to ensure a snug fit with the 1.8 inch cap diameter.
Homeowners seeking to modernize their kitchen sink look while ensuring proper plumbing function will appreciate this reliable and easy-to-install upgrade. It balances durability with style effectively for most residential needs.
Corrosion Resistance
High-quality brass ensures the cap withstands moisture and humidity without rusting or showing wear.
Stylish Finish
Brushed nickel complements modern faucets and sinks for a sleek high-end look in any kitchen.
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4. Westbrass Plastic Air Gap – Best Budget Air Gap for Dishwasher
Westbrass Plastic Air Gap
Plastic body construction
Polished chrome finish style
2 pack included box
1-5/8 inch cap diameter
This budget-friendly option offers a practical solution for those needing a reliable air gap without breaking the bank. Rated 4.6 stars it comes in a two pack which is convenient for having a spare or replacing multiple units.
Pros
- Affordable price point
- Durable plastic body
- Polished chrome look
- Includes two units
- Standard air gap size
Cons
- Lip exposed after install
- Not solid brass
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The standard air gap cap features a plastic body and polished chrome finish providing a clean look at a low cost. It meets standard dimensions with a 1-5/8 inch cap diameter ensuring compatibility with most installation setups.
While the cap leaves the lip of the air gap body exposed which might not suit every aesthetic preference the durability and functionality are strong points for the price. The 9 inch overall height fits most sink deck requirements comfortably.
Budget-conscious homeowners or DIYers looking for a straightforward replacement should consider this kit for its value and reliability. It is a solid choice for essential plumbing compliance without extra frills.
Cost-Effective Solution
Buying a two pack provides excellent value and ensures you have a backup available if needed.
Standard Compatibility
Fits standard plumbing codes and sink hole sizes making it easy to install in most homes.
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5. Dishwasher Air Gap Kits – Best Chrome Replacement Kit
Dishwasher Air Gap Kits
Solid brass cap option
Polished chrome finish style
Flange and escutcheon
Universal fit design
This kit provides a complete replacement solution with a solid brass cap and matching escutcheon to cover the air gap body. It receives a 4.6 rating for its classic design that complements any home decor while ensuring hygiene.
Pros
- Includes escutcheon piece
- Solid brass cap
- Seven color options
- Prevents backflow
- Hassle-free installation
Cons
- Check existing hole size
- Limited color availability
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The polished chrome finish adds a touch of elegance and is available among seven color options to match kitchen faucets. The durable ABS plastic body and brass cap ensure resistance to corrosion and rust for years of reliable performance.
Installation is designed to be easy without requiring special tools allowing you to secure it quickly to the sink deck. However you should verify the height of your existing ventilation holes to ensure the best fit.
Anyone looking to refresh the look of their kitchen sink while maintaining proper dishwasher drainage will find this kit a great option. Its classic styling and functional design make it a versatile choice for many households.
Complete Coverage
The matching escutcheon covers the entire air gap body for a clean flush look against the sink.
Material Quality
Solid brass construction ensures the cap remains durable and resistant to rust in humid kitchen environments.
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6. Dishwasher Air Gap Cover – Best Premium Skirted Design
Dishwasher Air Gap Cover
Solid brass core structure
Brushed nickel finish style
Skirted design aesthetic
1.80 inch cap diameter
This premium cover is engineered for longevity with a solid brass core and a brushed nickel finish that resists water stains. It is rated 4.8 stars for its powerful backflow prevention and elegant design that elevates kitchen aesthetics.
Pros
- Solid brass durability
- Brushed nickel finish
- Skirted cap style
- Universal size compatibility
- Stain-resistant surface
Cons
- Replacement item only
- Check hole height
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The skirted design covers the entire air gap tubing providing a clean look that matches modern kitchen ideals. The curved top prevents water accumulation which helps avoid paint peeling and keeps the surface flawless over time.
Maintenance is effortless as the smooth surface allows easy cleaning and the removable design simplifies routine blockage clearing. Before purchasing verify the height of existing ventilation holes to ensure it fits your specific setup.
Homeowners who prioritize premium materials and sleek design will appreciate this cover as a high-end upgrade for their sink. It combines functionality with style to deliver a top-tier experience for any kitchen.
Long-Term Durability
Solid brass core ensures the cap withstands years of use without rusting or losing its finish.
Easy Maintenance
The stain-resistant surface and removable design make cleaning and unclogging simple and quick.
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7. Dishwasher Air Gap Cover Black – Best Matte Black Finish
Dishwasher Air Gap Cover Black
Solid brass cap material
Matte black finish style
Skirted design aesthetic
Standard size fit
This replacement cap offers a stylish matte black finish that pairs well with modern black faucets and sinks. Rated 4.7 stars it features solid brass construction that provides maximum durability and resistance to corrosion and rust.
Pros
- Matte black finish
- Solid brass durability
- Skirted design look
- Eight color options
- Prevents corrosion rust
Cons
- Check sink color match
- Replacement item only
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The classic skirted design covers the air gap body for a clean look that complements any home style. With eight color options available you can choose the perfect match to integrate seamlessly with your kitchen decor.
It is designed for hassle-free installation requiring no special tools for quick setup. However you should check your existing hole dimensions to ensure the standard size fits properly before ordering.
Anyone seeking a bold and modern look for their kitchen sink will find this matte black cover an excellent choice. It balances high-end materials with versatile styling to meet diverse design preferences.
Modern Aesthetic
Matte black finish provides a contemporary look that stands out against lighter countertops and sinks.
Versatile Options
Eight color options ensure you can find the perfect match for your specific sink and faucet setup.
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8. Prime-Line MP53045 – Best Stamped Steel Cover
Prime-Line MP53045
Stamped steel material
Chrome plated finish style
Push on installation type
Single pack included
This cover is designed to fit over most dishwasher air gaps providing a simple way to vent air or water. It is rated 4.5 stars and offers a chrome plated finish that adds a basic level of style and protection.
Pros
- Chrome plated finish
- Push on ease
- Fits most air gaps
- Affordable price
- Single unit included
Cons
- Single pack limit
- Steel may rust
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Made from stamped steel it is easy to install with a push-on method that requires no tools. This simplicity makes it a convenient choice for quick replacements where function is the primary concern over aesthetics.
While the single pack limit might require multiple orders if you need spares the affordable price point makes it accessible for many budgets. It is best used for standard installations where premium features are not necessary.
Homeowners needing a quick and easy cover replacement without complicating the process should consider this reliable option. It serves well for maintaining airflow and preventing visible gaps on your sink deck.
Simple Installation
The push-on design allows for immediate installation without any tools or plumbing experience.
Standard Fit
Designed to cover most standard air gaps ensuring compatibility with common kitchen setups.
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9. KRAUS Dishwasher Air Gap – Best Matte Black Model
KRAUS Dishwasher Air Gap
Solid brass cover material
Matte black finish style
ABS plastic body option
Universal design fit
This KRAUS model brings premium build quality to the matte black aesthetic with a solid brass cover and durable ABS body. It is rated 4.8 stars for its superior corrosion resistance and ability to prevent wastewater from contaminating clean dishes.
Pros
- Solid brass cover
- Matte black finish
- Universal design fit
- Prevents backflow
- Premium durability
Cons
- Higher price
- Requires 1 1/2 hole
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The universal design ensures compatibility with all dishwashers on the market making it a versatile choice for upgrades. Its matte black finish does not dull or fade over time maintaining a high-end look that complements modern faucets.
While the pre-drilled hole requirement of 1 1/2 inches may need careful planning the clean flush installation to the sink deck justifies the effort. The 1 year warranty supports satisfaction and puts customer support first.
Anyone looking to make a style statement while ensuring plumbing code compliance should choose this model for its elegance and reliability. It is a top-tier option for those valuing both function and form.
Timeless Finish
Premium corrosion-resistant finish ensures the matte black look stays flawless without fading or dulling.
Reliable Performance
Solid brass and ABS body combine to offer a lifetime of reliable performance in kitchen conditions.
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10. Dishwasher Air Gap Cover – Best Matte Black Kit
Dishwasher Air Gap Cover
Solid brass cap material
Matte black finish style
ABS plastic body option
Skirted design aesthetic
This kit provides a stylish matte black finish with a solid brass cap and ABS plastic body to ensure corrosion resistance. It is rated 4.7 stars for its efficient backflow prevention and classic design that complements any home decor.
Pros
- Solid brass cap
- Matte black finish
- Curved top design
- Prevents vapor buildup
- Easy installation
Cons
- Check hole diameter
- Replacement kit only
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The curved top design prevents water vapor buildup reducing the risk of paint peeling and keeping the surface flawless over time. The skirted cap covers the entire air gap body for a clean look that installs flush with the sink deck.
Installation requires no special tools allowing for a quick setup. However you should verify the diameter of your existing hole to ensure the 1.8 inch cap fits properly before purchase.
Homeowners seeking a budget-friendly yet stylish upgrade for their kitchen sink will find this kit a solid option for performance and looks. It balances durable materials with easy installation for most users.
Clean Appearance
Skirted design covers the gap body fully for a seamless look that hides plumbing components.
Vapor Prevention
Curved top stops water buildup preventing paint peeling and keeping the finish pristine.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Selecting the right air gap involves considering material quality design finish and compatibility with your sink to ensure both functionality and style.
Material Durability
Look for solid brass or ABS plastic construction to ensure the unit resists corrosion and rust over time. Metal parts that are not protected may degrade quickly in a humid kitchen environment causing leaks or failure.
Choose units with high-quality materials like brass covers or stainless steel to ensure long-lasting performance without needing frequent replacements.
Finish and Style
The finish of the air gap should match your faucet and sink hardware for a cohesive kitchen look. Options like brushed nickel matte black or chrome offer different aesthetic appeals depending on your design preferences.
Select a finish that complements your existing kitchen hardware to maintain a clean and integrated appearance in your space.
Compatibility
Verify the cap diameter and hole size requirements to ensure the air gap fits your sink deck properly. Most units require a 1 1/2 inch hole and specific pipe dimensions for proper drainage.
Always measure your existing hole and pipes before buying to avoid installation issues or the need for extra modifications.
Installation Ease
Choose models that allow for tool-free or simple push-on installation to save time and effort during setup. Some kits include matching escutcheons that make the process smoother and more professional.
Prioritize kits with clear instructions and universal design to ensure you can install them without professional help.
Backflow Prevention
The primary function of an air gap is to prevent wastewater from backing up into your dishwasher and contaminating clean dishes. Ensure the unit meets plumbing codes and functions effectively to keep your kitchen hygienic.
Select products designed specifically to prevent backflow effectively to protect your dishes and maintain kitchen safety standards.
Price and Warranty
Consider the overall value by comparing the price with the features and warranty provided. A higher price may be justified by better materials and longer warranties that offer peace of mind.
Look for options that balance affordability with durability and warranty coverage to ensure long-term satisfaction with your purchase.
How to Use and Care for Your Air Gap for Dishwasher
Ensure the air gap is installed flush with the sink deck to prevent water from pooling around the base and causing staining. Proper alignment helps maintain a clean look and prevents debris from getting caught in the gap.
Regularly clean the cap and the area around it using mild soap and water to prevent buildup of food particles or soap scum. This simple maintenance keeps the finish looking new and ensures the vents remain clear.
If you notice water leaking from the top of the air gap check the drain line for clogs or kinks that may restrict flow. Clearing these blockages quickly prevents overflow and keeps your kitchen area dry and tidy.
Frequently Asked Questions
Why do I need an air gap for my dishwasher?
An air gap prevents wastewater from the sink or drain from flowing back into your dishwasher which could contaminate your clean dishes. It is required by plumbing codes in many areas to ensure safe and hygienic drainage.
Does the air gap need to be installed on the sink deck?
Yes most air gaps are designed to be installed on the sink deck or countertop to ensure the drain line remains above the sink level. This positioning is critical for the air gap to function properly and prevent backflow.
What if my dishwasher leaks from the air gap?
Leakage from the air gap usually indicates a clog or kink in the drain line preventing water from flowing through. You should inspect and clean the drain hose to clear the obstruction and restore normal function.
Are all air gaps universal in size?
Most air gaps use standard hole sizes like 1 1/2 inches and cap diameters around 1 7/8 inches. However you should always check the specifications of your specific model to ensure compatibility with your sink setup.
Can I hide the air gap under the sink?
No plumbing codes generally require the air gap to be visible and installed on the sink deck to function properly. Hiding it may violate codes and compromise the effectiveness of the backflow prevention system.
How often should I clean my air gap?
It is recommended to clean your air gap at least once a month to prevent buildup of debris or grime. Regular cleaning helps ensure the unit remains clear and functions correctly without causing leaks.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
We have reviewed ten top-rated models ranging from budget-friendly options to premium designs with solid brass construction. Each offers reliable performance to prevent backflow and protect your clean dishes from contamination.
When making your decision prioritize material durability and finish options that match your kitchen hardware for a seamless look. Consider whether you need a full kit or just a replacement cap based on your current setup needs.
Please check the latest availability and pricing before purchasing as market conditions can change over time. We hope this guide helps you find the perfect air gap to keep your kitchen safe and stylish.