Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
4.6Editor score
Includes two air gap units
Polished chrome finish style
Standard cap diameter size
In this guide
Protecting your kitchen from wastewater backup is essential for hygiene and appliance longevity. An air gap for dishwasher installations ensures clean water separation and prevents dangerous cross contamination during every cycle.
We evaluated ten top models based on durability, design, and compliance with plumbing codes. Our comparison includes solid brass covers, universal kits, and splash guards to suit every sink setup and aesthetic preference.
Each pick highlights key features, pros, and cons to help you decide. Remember that prices and availability change frequently, so verify details on the product page before finalizing your purchase today.
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 option
Universal fit for dishwashers
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Matte Black
4.7Editor score
Matte black premium finish
Solid brass construction body
Curved top design style
Top 10 Best Air Gap for Dishwasher in 2026 Compared
The following table provides a side by side overview of all ten selected products. Use this quick reference to compare specs, finishes, and key features before making your final decision.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel, KAG-1SFS
Height: 9 inches total
Cap diameter: 1 7/8 inches
Material: Brass and ABS
Color: Spot Free Stainless
4.8Editor score
Editor's Choice
2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard, 4 Overflow Spout Extender for Dishwasher,Universal Accessory For Dishwasher Air Gap,Replacement Dishwasher Air Gap (Grey,Black)
Material: Food grade silicone
Color: Grey or Black
Includes: Two splash guards
Feature: 4 degree slope
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
Finish: Brushed nickel style
Cap diameter: 1.8 inches
Body: Durable ABS plastic
Design: Curved top cap
4.7Editor score
Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
Pack: Includes two units
Finish: Polished chrome
Cap diameter: 1-5/8 inches
Body: Standard plastic cap
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
Finish: Polished chrome style
Includes: Escutcheon plate
Material: Solid brass cap
Fit: Universal dishwasher model
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
Finish: Brushed nickel cap
Design: Skirted style
Cap diameter: 1.80 inches
Body: Solid brass core
4.8Editor score
Dishwasher Air Gap Cover Black only, Skirted, Replacement Black air gap dishwasher,Solid Brass,Matte Black Finish
Finish: Matte black style
Design: Skirted cap only
Material: Solid brass cap
Fit: Standard air gap model
4.7Editor score
Prime-Line MP53045 Dishwasher Air Gap Cover, Stamped Steel, Chrome Plated Finish (Single Pack)
Material: Stamped steel body
Finish: Chrome plated style
Pack: Single unit only
Install: Easy push on
4.5Editor score
KRAUS Dishwasher Air Gap in Matte Black, KAG-1MB
Finish: Matte black style
Height: 9 inches total
Material: Brass and ABS
Cap diameter: 1 7/8 inches
4.8Editor score
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Matte Black
Finish: Matte black style
Material: Solid brass cap
Design: Curved top cap
Includes: Matching escutcheon
4.7Editor score
1. KRAUS Stainless Steel Air Gap – Best Overall Choice
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel, KAG-1SFS
Solid brass cover material
Corrosion resistant finish
Universal fit design
1 year warranty
The KRAUS air gap in Spot Free All-Brite Stainless Steel stands out as the top choice for homeowners seeking reliability and style. With a rating of 4.8 stars, it delivers exceptional protection against wastewater backup while maintaining a clean aesthetic.
Pros
- Superior durability
- High-end appearance
- Code compliant design
- Excellent customer support
- Premium finish quality
Cons
- Higher price point
- Specific hole size
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This kit features a solid brass cover that ensures long-lasting performance. The corrosion-resistant finish prevents dulling over time, making it ideal for busy kitchens. Its universal design works with all dishwashers, ensuring easy compatibility.
While it requires a specific pre-drilled hole size of 1 1/2 inches, the trade-off is worth it for the premium build. The cap covers the entire body for a flush look. Installation is straightforward with included hardware.
If you want a durable, code-compliant air gap that enhances your kitchen, this model is the best pick. It combines functionality with high-end design, making it a wise investment for any home.
Durability Meets Style
The solid brass cover and premium finish ensure this unit resists rust while matching modern kitchen faucets perfectly.
Code Compliance Guarantee
Air gaps are required by plumbing codes in many states, and this model meets those standards for safe installation.
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2. Silicone Splash Guard – Best Accessory Add-On
2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard
Food grade silicone material
Two color options
Includes two units
4 degree slope
This silicone splash guard is a practical add-on for existing air gap setups. With a 4.3 rating, it helps catch drips and direct water flow into the sink, keeping countertops dry and clean.
Pros
- Prevents water splashing
- Easy to clean
- Odorless and safe
- Snug fit design
- Stylish color choices
Cons
- Not a full kit
- Requires existing gap
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Made from 100% food-grade silicone, it is safe and durable. The 4-degree slope aids efficient drainage. Choose from grey or black to match your sink decor and enhance your kitchen aesthetic.
While it does not replace the entire air gap, it solves leakage issues effectively. It fits most diameters snugly, reducing the need to wipe down counters frequently after every wash.
Ideal for those looking to upgrade an old setup without replacing the whole unit. This accessory is a simple, cost-effective way to improve sink area cleanliness and style.
Efficient Water Management
The ramp design catches water from the gap and directs it into the sink, preventing messy countertop puddles.
Premium Material Quality
Food-grade silicone ensures safety and longevity, making it a reliable choice for daily kitchen use.
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3. Brushed Nickel Cap Kit – Best Finish Match
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Brushed Nickel
Brass construction material
Brushed nickel finish
Curved top design
Universal sink fit
This solid brass cap kit in brushed nickel offers an elegant solution for replacing worn air gap covers. With a 4.7 rating, it prevents wastewater backup while enhancing your kitchen sink aesthetic.
Pros
- Effective backflow prevention
- Elegant stylish design
- High-quality brass build
- Easy installation process
- Clean appearance finish
Cons
- May need tool for fit
- Replacement only item
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The brushed nickel finish and curved top design reduce water vapor buildup. The skirted cap covers the entire body, installing flush with the sink deck for a clean look that complements any decor.
While it requires matching existing pipes, the universal fit works for most kitchen sinks. Installation is hassle-free and needs no special tools. The ABS body ensures durability alongside the brass cap.
Choose this kit if you want to update your air gap without full replacement. It is a stylish, effective choice for modernizing your kitchen with minimal effort and maximum visual appeal.
Style and Function Combined
The curved top prevents paint peeling and maintains a flawless appearance over time while ensuring hygienic kitchen operation.
Effortless Setup Experience
Designed for easy setup, this kit allows quick secure installation to your sink deck with minimal effort and tools.
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4. Westbrass 2-Pack – Best Value for Multiple Units
Westbrass Plastic Air Gap, 2 Pack, Polished Chrome, D200P-CP-PK
Two air gap units
Polished chrome finish
Plastic body included
Standard cap size
For those needing multiple units or a backup, this Westbrass 2-Pack offers great value. With a 4.6 rating, it provides reliable functionality and a polished chrome finish for a clean look.
Pros
- Includes two units
- Affordable price range
- Standard cap diameter
- Chrome plated style
- Reliable performance
Cons
- Plastic body less durable
- Basic design style
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The plastic body is lightweight yet sturdy for standard installations. The cap diameter of 1-5/8 inches and height of 2-1/4 inches fit typical setups. Two units mean flexibility for multiple sinks.
While plastic may not match brass durability, it is cost-effective for most homes. The polished chrome finish complements various kitchen faucets. It leaves the lip exposed when installed, which is standard.
If budget is a priority and you need more than one unit, this pack is a smart choice. It delivers essential backflow prevention with a classic finish at an accessible price point.
Cost-Effective Flexibility
With two units in the box, you can outfit multiple sinks or keep a spare for future replacements.
Standard Fit Guarantee
The standard cap diameter and height ensure compatibility with most existing air gap bodies without modification.
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5. Polished Chrome Kit – Best Complete Replacement Solution
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
Polished chrome finish
Includes escutcheon
Universal air cap
This kit combines a solid brass cap with a matching escutcheon for a complete look. With a 4.6 rating, it offers built-to-last durability and a classic design that complements any home.
Pros
- Built to last quality
- Classic stylish design
- Multiple color options
- Easy to install
- Value for money
Cons
- Some colors may fade
- Requires hole fit
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Choose from seven color options to match your sink and faucet. The polished chrome finish provides high resistance to corrosion and rust. The skirted cap covers the entire body for a clean appearance.
While color availability is a plus, installation requires ensuring the hole fits the cap. It is designed for hassle-free installation. The ABS plastic body adds strength to the brass cap for reliable performance.
If you need a full replacement kit with style options, this is a strong choice. It offers value and reliability for homeowners seeking to upgrade their dishwasher drainage setup.
Customizable Style Options
Choose from seven color options to perfectly match your kitchen sink and kitchen faucet with precision.
Complete Kit Value
Includes durable ABS plastic body and solid brass construction cap for maximum durability and reliable performance.
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6. Brushed Nickel Cover – Best Replacement Option
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
Brushed nickel finish
Skirted design
Universal size fit
With a 4.8 rating, this solid brass cover in brushed nickel is a top choice for replacements. It prevents dirty water flow and cross-contamination, ensuring a clean dry kitchen environment.
Pros
- Powerful backflow prevention
- Long-term use structure
- No water stains
- Clean aesthetic design
- Effortless maintenance
Cons
- Check existing height
- Replacement only item
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The skirted design covers the entire air gap tubing, offering a clean look that matches your kitchen. The curved top prevents water accumulation, avoiding paint peeling and maintaining a flawless appearance over time.
While it is replacement only, the universal size fits most air gap bodies. Maintenance is easy due to the smooth stain-resistant surface. Simply slip the cover on for a secure fit.
Select this cover to upgrade your existing setup with a durable and stylish option. It provides the security of brass construction and the elegance of brushed nickel for any modern kitchen.
Durable Construction
Engineered for longevity, this air gap cover combines a solid brass core with a brushed nickel finish.
Clean Aesthetic Appeal
The skirted cap covers the entire air gap tubing for a clean look that matches your kitchen ideally.
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7. Matte Black Cover – Best Modern Style Option
Dishwasher Air Gap Cover Black only, Skirted, Replacement Black air gap dishwasher,Solid Brass,Matte Black Finish
Matte black finish
Solid brass cap
Skirted design
Standard size cap
This black-only cover features a matte finish for a modern look. With a 4.7 rating, it is a solid brass cap that ensures maximum durability and resistance to corrosion and rust.
Pros
- Classic design look
- Built to last
- Eight color options
- Easy to install
- Value for money
Cons
- May need alignment
- Replacement only item
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The classic design complements any home with its sensible styling. Choose from eight color options to match your sink and faucet. The skirted cap installs flush with the sink deck for a clean look.
While it is replacement only, the standard size fits most brands. It is designed for hassle-free installation. The solid brass construction ensures years of reliable performance and longer service life.
If you want a dark, modern finish, this is a great choice. It provides reliability and value for homeowners seeking to update their kitchen with a sleek and stylish air gap cover.
Modern Design Appeal
Classic and sensible styling complements any home with a clean look that matches your kitchen decor.
Long-Lasting Build
Solid brass construction cap for maximum durability, resistant to corrosion and rust for years of reliable performance.
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8. Prime-Line Cover – Best Simple Cap Solution
Prime-Line MP53045 Dishwasher Air Gap Cover, Stamped Steel, Chrome Plated Finish (Single Pack)
Stamped steel material
Chrome plated finish
Single pack unit
Push on install
For basic coverage, this Prime-Line cover is a practical choice. With a 4.5 rating, it vents air and water from your dishwasher, offering essential protection at an affordable price.
Pros
- Vent air and water
- Easy installation
- Fits most gaps
- Affordable price
- Durable steel
Cons
- Single unit only
- Basic finish
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Constructed from stamped steel with a chrome finish, it is durable. The easy push-on installation simplifies setup. Designed to fit over most air gaps for dishwashers, it provides standard functionality.
While it is a single unit and basic in design, it gets the job done. The steel material ensures resilience. If you need a simple replacement, this model delivers value without complexity.
If you want a straightforward, no-fuss cap, this is a viable option. It ensures proper airflow and water venting with a durable steel build.
Effective Venting
Designed to fit over most air gaps for dishwashers, allowing effective venting of air and water.
Simple Installation
Easy push on installation over the air gap of your dishwasher means no tools are needed for setup.
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9. KRAUS Matte Black – Best Dark Finish Choice
KRAUS Dishwasher Air Gap in Matte Black, KAG-1MB
Matte black finish
Solid brass cover
9 inch height
Universal design
The KRAUS Matte Black model offers a premium dark finish. With a 4.8 rating, it prevents wastewater from backing up and ensures clean dishes without contaminating your clean kitchenware.
Pros
- Superior durability
- High-end appearance
- Corrosion resistant
- 1 year warranty
- Comes in colors
Cons
- Specific hole size
- Higher price point
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It includes a durable ABS plastic body and solid brass cover for lifetime performance. The matte black finish is corrosion and rust resistant. The cap covers the entire body for a clean look.
While it requires a specific pre-drilled hole size of 1 1/2 inches, the build quality justifies it. The universal design works with all dishwashers. It offers a high-end appearance that elevates your kitchen.
Choose this model for a stylish, durable option that matches dark kitchen faucets. It delivers reliability and a modern aesthetic with solid brass construction and superior finish quality.
High-End Durability
Solid brass cover offers superior durability and a high-end appearance with a premium corrosion-resistant finish.
Universal Compatibility
Universal design is compatible with all dishwashers on the market for easy installation and broad fit.
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10. Matte Black Kit – Best Complete Black Upgrade
Dishwasher Air Gap Cover, Dishwasher Air Gap Cap for Kitchen Sink, Solid Brass Dishwasher Overflow Vent Cap Replacement Kit, Matte Black
Matte black finish
Solid brass construction
Includes escutcheon
Curved top cap
This kit offers a complete black upgrade with solid brass construction. With a 4.7 rating, it prevents wastewater from backing up, ensuring your dishes stay clean and hygienic.
Pros
- Effective backflow prevention
- Premium brass build
- Stylish design
- Universal fit size
- Easy installation
Cons
- Replacement only item
- Check pipe size
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The matte black finish enhances visual appeal. The curved top design prevents water vapor buildup. It includes a matching escutcheon for a clean appearance that complements any home decor.
While it is a replacement kit, the universal fit works for most kitchen sinks. Installation is hassle-free. The ABS plastic body adds durability alongside the brass cap for long-term use.
If you want to upgrade your air gap to a stylish black set, this is a great choice. It provides effective protection and a high-quality look at a reasonable cost for your kitchen.
Visual Enhancement
The high-end matte black finish enhances the visual appeal of your kitchen while preventing water vapor buildup.
Universal Fit Compatibility
Air gap cap diameter of 1.8 inches makes it suitable for most kitchen sinks and dishwashers universally.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Selecting the right air gap involves considering material, design, finish, and compatibility. This guide outlines key factors to ensure you get a product that protects your dishwasher and matches your kitchen.
Material Quality and Durability
High-quality air gaps use solid brass for the cap and ABS plastic for the body. Brass offers superior corrosion resistance and longevity compared to cheaper stamped steel or plastic alternatives.
Look for solid brass construction to ensure your unit lasts for years without rusting or breaking.
Finish and Aesthetic Match
Air gaps come in various finishes like chrome, stainless steel, brushed nickel, and matte black. Choosing one that matches your faucet ensures a cohesive and professional kitchen look.
Select a finish that complements your sink and faucet to maintain style consistency in your kitchen.
Size and Compatibility
Ensure the cap diameter and hole size match your existing setup. Most caps have a diameter of around 1.8 inches, but pre-drilled hole requirements can vary slightly.
Check the cap diameter and hole size requirements before purchasing to guarantee a perfect fit for your sink.
Skirted vs. Basic Design
Skirted caps cover the entire air gap body and install flush with the countertop for a clean look. Basic caps may leave parts of the body exposed, affecting visual appeal.
Choose a skirted design for a flush, clean look that hides the entire air gap body from view.
Code Compliance
Many local plumbing codes require an air gap to prevent backflow contamination. Ensure your product meets these codes to avoid installation issues or inspections.
Verify that the air gap meets local plumbing codes for safe and legal installation in your home.
Replacement vs. Full Kit
Some listings offer just the cap for replacement, while others include the full body and escutcheon. Determine if you need a full replacement or just a cover upgrade.
Decide whether you need a full replacement kit or just a cover upgrade based on your current setup condition.
Price and Warranty
Prices vary from budget plastic options to premium brass units. Higher-end models often include longer warranties for peace of mind against defects or damage.
Compare warranty terms and pricing to ensure you get reliable performance and protection for your investment.
How to Use and Care for Your Air Gap for Dishwasher
Install the air gap on your sink deck or countertop according to local plumbing codes, ensuring it connects properly to the drain lines.
Regularly clean the cap and remove any debris to maintain airflow. Unscrew the cap and rinse it out periodically to prevent clogs.
Inspect the unit for signs of rust or corrosion. If you notice any leaks, check the seals and connections to prevent water backup.
Frequently Asked Questions
What is the purpose of a dishwasher air gap?
An air gap prevents wastewater from backing up into your dishwasher by creating a physical air break between the drain line and the sink drain. This ensures your clean dishes stay free from contaminants and protects your home from cross-contamination.
Are dishwasher air gaps required by code?
Yes, many states and local plumbing codes require an air gap for dishwasher installations. This is to ensure safe drainage and prevent dirty water from flowing back into your clean appliance.
How do I clean my air gap cover?
To clean your air gap cover, unscrew it carefully. Rinse the cap and the body with water to remove any debris. Use a soft brush to scrub inside if necessary, then dry thoroughly before reinstalling.
What material is best for an air gap?
Solid brass is considered the best material for the cap due to its durability and corrosion resistance. ABS plastic is common for the body as it is lightweight and resistant to rust.
Can I replace just the cap on my air gap?
Yes, you can often replace just the cap if the body is still functional. However, ensure the replacement cap fits your existing air gap body and pipe sizes correctly.
Why does my air gap leak?
Leaks can occur if the air gap is clogged or if the seals are worn out. Check for debris inside the cap and verify that all connections are tight and secure to stop the leak.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
We reviewed ten top-rated options including the KRAUS stainless steel model and the Westbrass 2-pack for value. These picks provide reliable protection and aesthetic appeal for any kitchen setup.
Prioritize materials like solid brass and finishes that match your kitchen. Ensure compatibility with your sink and plumbing codes for a safe and effective installation.
Prices and availability can change quickly so check the product page before buying. We hope this guide helps you find the perfect air gap for your home.