Westbrass Plastic Air Gap 2 Pack
4.6Editor score
Includes two air gap units
Polished chrome finish standard
Affordable and reliable option
In this guide
A dishwasher air gap is a small but essential device that prevents wastewater from flowing back into your clean dishes. It acts as a physical barrier in your plumbing system, ensuring that dirty water never contaminates your freshly washed items.
We evaluated ten leading dishwasher air gaps based on durability, design, ease of installation, and customer feedback. Our analysis focuses on materials like brass and plastic, finish options, and compatibility with standard kitchen sinks and fixtures.
Each product pick highlights key features, pros, and cons to help you make an informed decision. Prices and availability may change over time, so we recommend checking current listings before finalizing your purchase for your kitchen upgrade.
Top 3 Picks for Best Air Gap for Dishwasher
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel
4.8Editor score
Solid brass cover for durability
Prevents wastewater backup effectively
Available in multiple finishes
Dishwasher Air Gap Cover Solid Brass Brushed Nickel
4.7Editor score
Premium brass construction body
Elegant brushed nickel finish
Skirted design covers entire body
Top 10 Best Air Gap for Dishwasher in 2026 Compared
The following table provides a side-by-side comparison of the top 10 dishwasher air gaps evaluated in this guide. Review the specifications and features to find the best fit for your kitchen sink.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Spot Free All-Brite Stainless Steel
Material: ABS Plastic Body
Cover: Solid Brass
Finish: Spot Free Stainless
Hole Size: 1.5 Inch
4.8Editor score
Editor's Choice
2-Pack Dishwasher Air Gap Silicone Splash Guard
Material: Food Grade Silicone
Color Options: Grey and Black
Function: Splash Guard Cover
Fit: 1.5 Inch Hole
4.3Editor score
Best Premium
Dishwasher Air Gap Cover Solid Brass Brushed Nickel
Material: Solid Brass Cap
Body: ABS Plastic
Finish: Brushed Nickel
Design: Skirted Top
4.7Editor score
Westbrass Plastic Air Gap 2 Pack
Quantity: 2 Pack
Material: Plastic Body
Finish: Polished Chrome
Cap Diameter: 1.625 Inch
4.6Editor score
Dishwasher Air Gap Kits Polished Chrome
Material: Brass Cap and Plastic
Finish: Polished Chrome
Includes: Matching Escutcheon
Fit: Universal Design
4.6Editor score
Dishwasher Air Gap Cover Solid Brass Brushed Nickel
Material: Solid Brass Core
Finish: Brushed Nickel
Design: Skirted Cover
Diameter: 1.80 Inch
4.8Editor score
Dishwasher Air Gap Cover Matte Black
Material: Solid Brass Cap
Finish: Matte Black
Design: Skirted Style
Fit: Standard Size
4.7Editor score
Prime-Line MP53045 Stamped Steel Cover
Material: Stamped Steel
Finish: Chrome Plated
Installation: Push On
Pack: Single Pack
4.5Editor score
KRAUS Dishwasher Air Gap Matte Black
Material: ABS Plastic Body
Cover: Solid Brass
Finish: Matte Black
Hole Size: 1.5 Inch
4.8Editor score
Dishwasher Air Gap Cover Matte Black
Material: Solid Brass Cap
Body: ABS Plastic
Finish: Matte Black
Diameter: 1.8 Inch
4.7Editor score
1. KRAUS Spot Free All-Brite Stainless Steel – Best Overall Air Gap for Dishwasher
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel
Solid brass cover material
ABS plastic body construction
Prevents wastewater backup
Matches stainless steel faucets
The KRAUS dishwasher air gap in Spot Free All-Brite Stainless Steel stands out as the top choice for homeowners seeking reliability and style. With an impressive 4.8 rating, it combines a durable ABS plastic body with a solid brass cover to ensure long term performance.
Pros
- Durable solid brass cover
- Corrosion resistant finish
- Clean flush installation look
- Universal design compatibility
- Includes one year warranty
Cons
- Requires pre drilled hole
- Slightly higher price point
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Its premium corrosion resistant finish prevents dulling or fading over time, keeping your kitchen looking fresh. The design installs flush to the sink deck for a clean look, and the solid brass cover offers a high end appearance that matches most faucets.
While the unit requires a 1.5 inch pre drilled hole, this is standard for most installations. The cost is slightly higher than basic plastic models, but the superior materials and warranty justify the investment for a durable solution.
If you want a dishwasher air gap that balances aesthetics with function, this KRAUS model is the recommended choice. It effectively prevents wastewater backup while enhancing your sink area with a polished stainless steel finish.
Superior Material Quality
The solid brass cover provides exceptional durability and resistance to corrosion, ensuring the air gap remains functional and attractive for years.
Clean Installation Design
The cap covers the entire air gap body and installs flush to the sink deck, creating a seamless and professional appearance in your kitchen.
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2. 2-Pack Silicone Splash Guard – Best Accessory for Leak Prevention
2-Pack Dishwasher Air Gap Silicone Splash Guard
Made from food grade silicone
Fits 1.5 inch holes
Includes grey and black colors
Helps catch drips effectively
This 2-Pack dishwasher air gap silicone splash guard is a practical accessory designed to catch drips and direct water flow into the sink. Rated 4.3, it offers a simple solution for keeping your countertop dry and clean around the air gap area.
Pros
- Affordable price point
- Easy to clean silicone
- Prevents counter wet mess
- Fits most air gap covers
- Includes two color options
Cons
- Not a primary air gap
- May require replacement over time
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Made from 100 percent food grade silicone, the guard is safe, odorless, and durable. The 4 degree slope helps water drain efficiently, reducing the need to wipe down your counter tops frequently after dishwasher cycles.
Since it is an accessory rather than a full air gap unit, it works best as a complement to an existing air gap. The two color choices allow you to match your kitchen decor, though silicone may eventually wear with heavy use.
Choose this splash guard if you need an affordable way to manage minor leaks or drips from your air gap. It enhances cleanliness without requiring plumbing changes or complex installation steps.
Leak Management Solution
The silicone ramp catches drips and directs water into the sink, preventing wet spots on your countertop near the dishwasher air gap.
Flexible Design
Fits snugly around most air gap cover diameters and provides a stylish touch to your sink decor with grey or black color options.
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3. Solid Brass Brushed Nickel Cover – Best Premium Air Gap for Dishwasher
Dishwasher Air Gap Cover Solid Brass Brushed Nickel
High quality brass cap
Durable ABS plastic body
Brushed nickel finish option
Skirted design covers body
The Dishwasher Air Gap Cover in Solid Brass Brushed Nickel offers a premium look and robust performance for your kitchen. With a 4.7 rating, it features a high quality brass cap paired with a durable ABS plastic body for exceptional corrosion resistance.
Pros
- Premium brass construction
- Prevents water vapor buildup
- Elegant brushed nickel finish
- Universal fit for sinks
- Easy installation process
Cons
- Higher cost than plastic
- Check hole size first
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The elegant brushed nickel finish enhances your kitchen aesthetic, while the curved top design prevents water vapor buildup that could lead to paint peeling. The skirted cap installs flush with the sink deck for a clean appearance.
Installation is hassle free and requires no special tools, making it accessible for DIYers. While the price is higher than standard plastic units, the durability and visual appeal make it a valuable long term choice.
Select this premium kit if you prioritize design and durability in your plumbing accessories. It effectively prevents wastewater backup while providing a sophisticated finish that complements modern kitchen styles.
Stylish Brushed Nickel
The high end finish improves visual appeal and resists rust, ensuring your sink area looks flawless and modern for years.
Efficient Backflow Prevention
Designed to keep dishes clean by stopping wastewater from entering the dishwasher, maintaining a hygienic kitchen environment.
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4. Westbrass 2 Pack – Best Budget Air Gap for Dishwasher
Westbrass Plastic Air Gap 2 Pack
Two units in one pack
Plastic body construction
Polished chrome finish
1.625 inch cap diameter
The Westbrass Plastic Air Gap 2 Pack is the ideal choice for budget conscious shoppers who need reliable backup protection. With a 4.6 rating, it offers two standard air gap units with polished chrome finishes at a very competitive price.
Pros
- Affordable two unit value
- Polished chrome standard finish
- Standard air gap function
- Simple push on install
- Good availability
Cons
- Plastic body not brass
- Exposed lip when installed
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Each unit features a plastic body and cap that functions effectively to prevent wastewater backup. The polished chrome finish provides a clean look, and the simple design allows for quick installation without special tools or complexity.
Note that the plastic body may not offer the same longevity as brass options, and the cap leaves the lip exposed when installed. However, for the cost savings of getting two units, this remains a strong value proposition.
If you need a straightforward and affordable solution for your dishwasher drainage, this 2 Pack is a solid option. It ensures code compliance and protects your dishes from contamination at a low entry cost.
Value Pricing
Getting two air gap units in one package offers excellent value for money compared to buying single units separately.
Standard Functionality
Designed to vent air or water from your dishwasher effectively, ensuring your appliance works safely without backflow.
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5. Dishwasher Air Gap Kits – Best Value for Complete Kit
Dishwasher Air Gap Kits Polished Chrome
Solid brass cap included
Plastic body included
Matching escutcheon provided
Seven color options
This Dishwasher Air Gap Kit provides all necessary components including a solid brass cap, plastic body, and matching escutcheon for a complete installation. Rated 4.6, it ensures your kitchen sink looks clean with the skirted design covering the entire air gap body.
Pros
- Complete kit components
- Includes matching escutcheon
- Brass cap durability
- Universal air cap fit
- Hassle free installation
Cons
- Check color availability
- Standard plastic body
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The brass construction cap offers maximum durability and resistance to corrosion, while the plastic body keeps costs reasonable. The included escutcheon enhances the clean look by covering the hole in the countertop for a polished finish.
You can choose from seven color options to match your faucet, though availability may vary. The universal design fits most dishwashers, making it a versatile solution for replacement or new installations without complicated plumbing work.
Select this kit if you want a comprehensive package that ensures a professional look and reliable function. The brass cap adds a touch of premium quality to a budget friendly overall price.
Complete Kit Components
Includes the cap, body, and escutcheon to ensure a clean installation that covers the entire air gap structure.
Durable Brass Cap
The solid brass construction cap provides long term resistance to rust and ensures years of reliable performance.
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6. Solid Brass Skirted Cover – Best Replacement Cap Option
Dishwasher Air Gap Cover Solid Brass Brushed Nickel
Solid brass core material
Brushed nickel finish
1.80 inch diameter
Skirted design feature
This Solid Brass Skirted Cover is an excellent choice if you need a replacement cap for your existing air gap system. Rated 4.8, it combines a solid brass core with a brushed nickel finish to offer durability and a clean aesthetic.
Pros
- Excellent corrosion resistance
- Does not leave water stains
- Fits most air gap bodies
- Smooth stain resistant surface
- Easy removal for maintenance
Cons
- Replacement cap only
- Verify existing body size
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The skirted design covers the entire air gap tubing for a sleek look that matches your kitchen ideally. The curved top prevents water accumulation, which helps avoid paint peeling and ensures the finish stays flawless over time.
Maintenance is easy with the removable design that simplifies routine blockage clearing. The smooth surface resists stains, making it simple to wipe clean and keep looking fresh without requiring harsh chemicals.
Choose this cover to upgrade an old or damaged air gap unit with a premium cap. It provides the necessary backflow prevention protection while enhancing the visual appeal of your sink area.
Long-Term Durability
The solid brass core ensures excellent corrosion resistance and prevents rust, keeping your air gap functional for years.
Effortless Maintenance
The removable design allows for simple cleaning and blockage clearing without needing to remove the entire air gap body.
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7. Matte Black Brass Cover – Best Color for Modern Kitchens
Dishwasher Air Gap Cover Matte Black
Solid brass construction
Matte black finish
Skirted cap design
Eight color options
The Matte Black Air Gap Cover is designed to replace standard caps with a stylish option that suits modern kitchen decor. Rated 4.7, it features a solid brass construction cap with a matte black finish that resists corrosion and rust.
Pros
- Matches black faucets
- Solid brass durability
- Clean flush installation
- Universal standard size
- Hassle free install
Cons
- Replacement only cap
- Check existing fit
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The skirted design ensures the entire air gap body is covered, installing flush to the sink deck for a clean look. With eight color options available, you can find a match for your specific faucet or sink hardware.
Since this is a replacement cap only, ensure your existing air gap body is compatible before purchasing. The standard size fits most brand air gaps, providing a simple upgrade path for your current plumbing system.
If you are looking to coordinate your air gap with black fixtures, this cover is a perfect fit. It offers the reliability of brass construction while delivering the aesthetic update you need.
Classic Design
The classic styling complements any home decor and provides a sensible design that blends seamlessly with modern fixtures.
Built to Last
Solid brass construction ensures maximum durability and offers years of reliable performance with extended service life.
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8. Prime-Line Stamped Steel – Best Entry Level Cover
Prime-Line MP53045 Stamped Steel Cover
Stamped steel material
Chrome plated finish
Single pack option
Push on install
The Prime-Line MP53045 Dishwasher Air Gap Cover is a simple and economical solution for basic air gap coverage. Rated 4.5, it is constructed from stamped steel with a chrome plated finish, providing a standard protective cover for your air gap.
Pros
- Very low cost
- Easy push on install
- Fits most gaps
- Chrome finish standard
- Basic reliable function
Cons
- Less durable than brass
- No full body cover
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The easy push on installation allows you to secure it over your dishwasher air gap quickly without tools. Designed to fit over most air gaps, it serves its primary function of venting air or water effectively.
While it does not offer the same durability as solid brass units, the low price makes it a practical option for temporary or secondary needs. It is a basic cover that provides essential protection at a minimum cost.
Choose this cover if you need a quick fix or replacement without spending much. It ensures your air gap vents correctly while maintaining a clean appearance on your sink deck.
Easy Installation
The push on design simplifies the setup process, allowing you to install the cover securely without special tools.
Basic Venting Function
Constructed to vent air or water effectively from your dishwasher to maintain safe plumbing operation.
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9. KRAUS Matte Black – Best Style for Dark Fixtures
KRAUS Dishwasher Air Gap Matte Black
ABS plastic body
Solid brass cover
Matte black finish
Clean flush look
The KRAUS Matte Black Air Gap is a perfect choice for kitchens featuring dark or matte fixtures. With a 4.8 rating, it mirrors the functionality of its stainless steel sibling, featuring a durable ABS plastic body and solid brass cover.
Pros
- Matches matte fixtures
- Superior brass durability
- Resistant to corrosion
- Complies with codes
- One year warranty
Cons
- Higher price point
- Requires 1.5 inch hole
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The premium corrosion resistant finish ensures the unit will not dull or fade over time. This model installs flush to the sink deck for a clean look, and the matte black finish complements modern kitchen designs beautifully.
While it requires a 1.5 inch pre drilled hole, this is standard for most installations. The price is higher than basic units, but the quality of materials and warranty provide strong value.
Opt for this model if you want to maintain a cohesive dark aesthetic in your kitchen sink area. It offers reliable wastewater prevention with a stylish finish that stands out.
Premium Finish
The matte black finish adds a high end appearance and ensures long lasting visual quality without fading.
Code Compliance
Meets plumbing code requirements for dishwasher installations in many states to ensure safe and legal operation.
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10. Matte Black Replacement Kit – Best for Complete Matte Upgrade
Dishwasher Air Gap Cover Matte Black
Solid brass cap
ABS plastic body
Matte black finish
Includes escutcheon
This Matte Black Replacement Kit offers a complete solution with a solid brass cap, ABS body, and matching escutcheon for a full upgrade. Rated 4.7, it features a high end matte black finish that enhances your kitchen visual appeal.
Pros
- Complete replacement kit
- Brass construction durability
- Elegant matte black
- Prevents water vapor
- Universal fit
Cons
- Verify dimensions first
- Higher end price
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The curved top design prevents water vapor buildup and reduces the risk of paint peeling, maintaining a flawless appearance. The skirted cap installs flush with the sink deck for a clean and classic look.
Installation is easy and requires no special tools, allowing for quick setup. While it is a higher end option, the durability and aesthetic benefits make it a solid choice for modern homes.
If you need to replace an old unit with a stylish alternative, this kit provides all necessary parts. It ensures hygienic kitchen conditions while upgrading your sink style with a modern matte finish.
Elegant Design
The matte black finish complements any home decor and provides a sophisticated touch to your kitchen sink area.
Efficient Backflow Prevention
Designed to prevent wastewater backup effectively and keep your dishes clean and safe from contamination.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Choosing the right dishwasher air gap requires considering materials, finish, and compatibility. This section outlines the key factors to help you select a durable and stylish solution.
Material Quality
Air gaps are typically made from ABS plastic bodies with brass or chrome caps. Brass offers superior corrosion resistance and longevity compared to plastic alone. Look for solid brass caps if you want a premium look that withstands moisture better.
Prioritize brass or solid metal components for a unit that will last longer and resist rust in wet environments.
Finish and Aesthetics
Your air gap should match your kitchen faucets and sink hardware. Common finishes include brushed nickel, chrome, matte black, and stainless steel. Choose a finish that complements your existing decor to avoid visual clashes.
Select a finish that matches your faucets to ensure a cohesive and polished look in your kitchen.
Installation Requirements
Most dishwasher air gaps require a pre drilled hole of 1.5 inches in your sink deck or countertop. Check your sink setup before purchasing to ensure compatibility. Some units include escutcheons to cover larger holes.
Verify the hole size on your sink to avoid issues during installation.
Code Compliance
Many states and local plumbing codes require an air gap for dishwasher installations. Ensure your chosen unit meets these standards to avoid future home inspection problems. It is crucial for safety and legality.
Choose a unit that meets local plumbing codes to ensure a legal and safe installation.
Durability and Warranty
Look for products with warranties to protect against manufacturing defects. Higher quality units often come with longer warranties and better support. This provides peace of mind for your plumbing investment.
Check for warranty details to ensure you are protected against potential defects.
Splash Protection Features
Some models include splash guards or skirts to keep water from reaching the countertop. These accessories help keep your sink area dry and clean. Silicone guards can be added to existing units for extra protection.
Consider accessories like splash guards if you want to minimize water on the countertop.
Universal Compatibility
A universal fit ensures the air gap works with most dishwasher models and plumbing setups. Check dimensions before buying to avoid incompatibility. Most standard units are designed to be versatile.
Verify that the dimensions match your existing plumbing to ensure a proper fit.
Price and Value
Prices range from budget-friendly plastic sets to premium brass kits. Consider your budget but invest in durability for long term savings. A higher upfront cost can prevent leaks and replacements later.
Balance cost with material quality to find the best value for your needs.
How to Use and Care for Your Air Gap for Dishwasher
To use your air gap correctly, ensure the tubes connecting it to the dishwasher and drain are clear of obstructions. Blockages can cause water to rise through the air gap cap and spill onto your counter.
Regularly inspect the air gap cap for buildup or residue. Remove the cap and rinse it under running water to keep it free from food particles or mineral deposits that could affect its appearance.
If water leaks from the top, disconnect the tubes and flush them with water to clear any clogs. Proper maintenance ensures the air gap functions effectively and keeps your kitchen dry and hygienic.
Frequently Asked Questions
What is a dishwasher air gap?
A dishwasher air gap is a device installed on your sink deck that prevents wastewater from backing up into the dishwasher. It creates a physical gap that ensures dirty water cannot contaminate your clean dishes during draining.
Do I need an air gap for my dishwasher?
Many local plumbing codes require an air gap for dishwasher installations to ensure safety. Even if not required, it is a reliable way to protect your food from contaminated water backup.
Why is water coming out of my air gap?
Water exiting the air gap usually indicates a clog in the drain line. Clearing the hose connected to the air gap often resolves this issue by allowing water to flow freely.
How do I clean my dishwasher air gap?
To clean the air gap, remove the cap and rinse it. Then disconnect the hoses and flush them with water to remove debris. This helps prevent blockages that cause water to spill out.
Can I replace an existing air gap easily?
Yes, you can replace an existing air gap by removing the old cap and hoses. Install the new unit by connecting the hoses and securing the cap to the sink deck with minimal tools.
What size hole do I need for installation?
Most air gaps require a pre drilled hole of 1.5 inches in the sink deck or countertop. Check the product specifications to confirm the exact size needed for your model.
Which finish is best for a modern kitchen?
Matte black and brushed nickel finishes are popular for modern kitchens. These finishes pair well with contemporary fixtures and resist fingerprints better than polished chrome.
Are plastic air gaps durable?
Plastic air gaps are functional but may not last as long as brass units. They are suitable for budget-conscious buyers but may degrade faster in harsh environments.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
We have reviewed ten top-rated dishwasher air gaps ranging from budget-friendly plastic units to premium brass kits. Our top picks include the KRAUS stainless steel model for durability, the Westbrass 2 pack for value, and the Solid Brass Brushed Nickel for style.
When selecting an air gap, prioritize material quality and compatibility with your sink setup. A well-chosen unit not only meets plumbing codes but also enhances the overall look of your kitchen with a clean finish.
Always check current prices and availability before purchasing. Prices and stock levels may change, so confirming details on the product page ensures you get the best deal for your specific needs.