2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard
4.3Editor score
Food grade silicone
Catches water drips
2 color options
In this guide
Protecting your kitchen from wastewater backup is essential for hygiene and safety. A quality Air Gap for Dishwasher ensures clean dishes stay uncontaminated by preventing reverse flow into your machine during the drain cycle.
We evaluated ten top-rated models based on material durability, design aesthetics, code compliance, and ease of installation. Our analysis includes brass caps, plastic bodies, and splash guards to help you choose the right fit for your sink.
Each pick highlights key features like corrosion resistance and universal compatibility. Please note that pricing and availability change frequently, so verify current details before purchasing your preferred air gap solution today.
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 finish
Universal dishwasher compatible
Code compliant design
Dishwasher Air Gap Cover Solid Brass Dishwasher Overflow Vent Cap
4.7Editor score
Brushed nickel finish
Curved top design
Matches any decor
Top 10 Best Air Gap for Dishwasher in 2026 Compared
This side-by-side comparison helps you quickly identify the right air gap cover or kit for your needs. Review key specs like material type, finish, and fitment details below.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS KAG-1SFS
Material ABS plastic body
Finish Spot Free All-Brite
Height 9 inches total
Cap Diameter 1 7/8 in
4.8Editor score
Editor's Choice
2-Pack Silicone Splash Guard
Material 100% food-grade
Fit Fits most diameters
Colors Grey and Black
Slope 4 degrees
4.3Editor score
Best Premium
Dishwasher Air Gap Cap Brushed Nickel
Material High-quality brass
Finish Brushed nickel
Cap Diameter 1.8 inches
Pipe 7/8 and 5/8
4.7Editor score
Westbrass Plastic Air Gap 2 Pack
Material Plastic body
Finish Polished Chrome
Cap Diameter 1-5/8 in
Inlet 5/8 in
4.6Editor score
Air Gap Kit with Escutcheon Polished Chrome
Material Solid brass cap
Finish Polished Chrome
Universal Air Cap Kit
Sevent color options
4.6Editor score
Solid Brass Skirted Cover Brushed Nickel
Material Solid Brass core
Finish Brushed nickel
Height 2.28 inches
Cap Diameter 1.80 inches
4.8Editor score
Air Gap Cover Black Matte
Material Solid brass
Finish Matte Black
Standard size cap
Eight color options
4.7Editor score
Prime-Line MP53045 Cover
Material Stamped steel
Finish Chrome Plated
Pack Single Pack
Installation Push on
4.5Editor score
KRAUS KAG-1MB Matte Black
Material ABS plastic body
Finish Matte Black
Height 9 inches total
Cap Diameter 1 7/8 in
4.8Editor score
Dishwasher Air Gap Cap Matte Black
Material High-quality brass
Finish Matte black
Cap Diameter 1.8 inches
Pipe 7/8 and 5/8
4.7Editor score
1. KRAUS KAG-1SFS – Best Overall Air Gap
KRAUS KAG-1SFS
Height 9 inches total
Cap Diameter 1 7/8 in
Material ABS plastic body
Finish Spot Free All-Brite
The KRAUS KAG-1SFS stands out as the top choice for homeowners seeking a reliable and stylish air gap solution. With a 4.8 rating, it combines a durable ABS plastic body with a solid brass cover for a high-end look that resists rust.
Pros
- Superior durability
- High-end appearance
- Code compliance
- Corrosion resistant
Cons
- Limited color variants
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Its Spot Free All-Brite finish ensures the unit maintains its shine over time without dulling or fading. The design covers the entire air gap body and installs flush to the sink deck, providing a clean look that complements most faucets.
While it offers excellent performance and code compliance across many states, some users might prefer more color options beyond stainless steel. However, the corrosion-resistant finish and universal compatibility with all dishwashers make these trade-offs acceptable for most kitchens.
We recommend this model for those prioritizing long-term reliability and aesthetics. It effectively prevents wastewater backup and offers a one-year warranty backed by strong customer support, making it a safe investment for any dishwasher setup.
Superior Durability and Rust Resistance
The solid brass cover and premium finish ensure the unit withstands daily kitchen humidity without corroding or losing its aesthetic appeal.
Universal Compatibility and Easy Fit
Designed to fit all dishwasher models, this kit requires a 1 1/2 inch pre-drilled hole for seamless integration with existing plumbing.
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2. 2-Pack Silicone Splash Guard – Best Budget Air Gap
2-Pack Silicone Splash Guard
Material 100% food-grade silicone
Fit Fits most diameters
Colors Grey and Black
Slope 4 degrees
This 2-Pack Silicone Splash Guard is an affordable accessory designed to keep your countertop dry by catching drips from the air gap cover. Made from 100% food-grade silicone, it fits snugly around most diameters and directs water efficiently into the sink.
Pros
- Catches drips
- Easy to clean
- Prevents mess
- Affordable accessory
Cons
- Does not prevent backflow
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Its 4-degree slope helps drain water quickly, reducing the need for frequent wiping. The stylish grey or black colors blend seamlessly with home decor, adding a touch of elegance to your kitchen sink area while keeping it tidy.
However, this product is a splash guard and not a primary backflow prevention device. While it prevents wet messes behind the sink, it does not stop wastewater from entering your dishwasher, so it is best used as a complementary accessory.
Ideal for budget-conscious users wanting a tidy sink, this silicone cover is durable and odorless. It is a practical addition to any kitchen where small drips can lead to larger cleaning chores.
Effective Drip Catching Design
The angled ramp ensures water flows directly into the sink, preventing splashes and keeping your countertop dry and clean.
Stylish and Durable Materials
Food-grade silicone offers long-lasting use and easy cleaning, available in timeless grey or black to match your home decor.
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3. Dishwasher Air Gap Cap Brushed Nickel – Best Premium Air Gap
Dishwasher Air Gap Cap Brushed Nickel
Material High-quality brass
Finish Brushed nickel
Cap Diameter 1.8 inches
Pipe 7/8 and 5/8
This premium brass air gap cap offers a high-end look with its brushed nickel finish and curved top design. It prevents water vapor buildup and paint peeling, maintaining a flawless appearance over time. The kit includes a matching escutcheon for a clean, finished look.
Pros
- Elegant design
- Curved top prevents buildup
- Brushed nickel finish
- Universal fit
Cons
- Replacement only
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Constructed from durable ABS plastic and high-quality brass, it ensures exceptional corrosion resistance. With a 1.8-inch diameter and pipes measuring 7/8 and 5/8 inches, it fits most kitchen sinks and dishwashers for universal compatibility.
As a replacement kit, it may not include the full body if your current unit is completely damaged. However, its skirted design covers the entire body and installs flush with the sink deck, offering a classic design that complements any home decor.
We recommend this for users upgrading an existing gap to improve aesthetics. The easy installation requires no special tools, allowing for a quick secure fit that enhances both function and visual appeal in your kitchen.
Premium Brass Construction
High-quality brass and ABS plastic ensure exceptional durability and corrosion resistance for long-term use in humid kitchen environments.
Curved Top Prevents Buildup
The design prevents water vapor accumulation, reducing the risk of paint peeling and keeping the cover looking flawless over time.
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4. Westbrass Plastic Air Gap 2 Pack – Reliable Standard Choice
Westbrass Plastic Air Gap 2 Pack
Material Plastic body
Finish Polished Chrome
Cap Diameter 1-5/8 in
Inlet 5/8 in
This Westbrass 2-pack offers standard air gap caps with a polished chrome finish at an economical price point. The plastic body includes standard dimensions with a 1-5/8 inch cap diameter and 9-inch overall height, fitting most kitchen installations.
Pros
- Two packs included
- Standard cap design
- Chrome finish
- Easy installation
Cons
- Plastic body may be less durable
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The polished chrome finish provides a bright, reflective look that matches many kitchen faucets. Each pack includes standard inlet and outlet sizes of 5/8 and 7/8 inches respectively, ensuring compatibility with standard dishwasher hoses.
While the plastic body is lightweight and functional, it may not offer the same longevity as solid brass units in high-humidity environments. Additionally, the cap leaves the lip of the air gap body exposed when installed, which some may find less refined.
Ideal for contractors or homeowners needing backups, this pack ensures you always have a replacement on hand. It is a practical choice for standard installations where budget is a priority and aesthetic refinement is secondary.
Value of 2-Pack Inclusion
Receiving two units in one package provides excellent value and ensures you have a spare replacement ready for future needs.
Standard Fit Dimensions
With standard 9-inch overall height and specific inlet/outlet sizes, it fits most standard dishwasher plumbing configurations.
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5. Air Gap Kit with Escutcheon Polished Chrome – Great Value Kit
Air Gap Kit with Escutcheon Polished Chrome
Material Solid brass cap
Finish Polished Chrome
Universal Air Cap Kit
Seven color options
This kit offers a complete solution with a solid brass cap and matching escutcheon for a polished look. The universal design fits most dishwashers and effectively prevents wastewater from backing up into the clean dish chamber.
Pros
- Includes matching escutcheon
- Solid brass cap
- Seven color options
- Prevents wastewater backup
Cons
- Body is plastic
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With seven color options available, you can perfectly match your kitchen sink and faucet. The skirted design covers the entire air gap body and installs flush to the sink deck, providing a classic styling that complements any home.
While the cap is solid brass, the body is ABS plastic which offers durability but may differ from all-metal options. However, the combination provides excellent corrosion resistance and value for money with a longer service life.
Recommended for those seeking a coordinated and easy installation, this kit requires no special tools. Its reliable performance and stylish finish make it a strong contender for upgrading existing kitchen plumbing fixtures.
Coordinated Design Options
Select from seven color options to ensure the air gap cap matches your kitchen sink and faucet perfectly.
Solid Brass Durability
The solid brass construction cap is resistant to corrosion and rust, ensuring reliable performance over years of use.
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6. Solid Brass Skirted Cover Brushed Nickel – Durable Brushed Finish
Solid Brass Skirted Cover Brushed Nickel
Material Solid Brass core
Finish Brushed nickel
Height 2.28 inches
Cap Diameter 1.80 inches
This model features a solid brass core with a brushed nickel finish, ensuring excellent corrosion resistance and preventing water stains. The curved top prevents water accumulation, avoiding paint peeling and maintaining a clean look on your countertop.
Pros
- Solid brass core
- Corrosion resistant
- No water stains
- Easy maintenance
Cons
- Replacement only
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With standard dimensions of 1.80 inches diameter and 2.28 inches height, it fits most air gap bodies. The smooth surface allows for easy cleaning and simple routine maintenance or blockage clearing without needing specialized tools.
As a replacement cover only, ensure your existing base is compatible before purchasing. While it lacks a new body, the skirted design covers the entire tubing and installs flush with the sink deck for an elegant finish.
We recommend this for those upgrading an old cap for better style and longevity. The effortless installation and durable materials make it a smart choice for refreshing your kitchen sink area quickly.
Long-Term Solid Brass Core
Engineered for longevity, the solid brass core resists rust and corrosion while not leaving water stains.
Skirted Design for Aesthetics
The curved top prevents water accumulation, avoiding paint peeling and maintaining a clean look on your countertop.
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7. Air Gap Cover Black Matte – Stylish Matte Black Option
Air Gap Cover Black Matte
Material Solid brass
Finish Matte Black
Standard size cap
Eight color options
This solid brass air gap cover features a sleek Matte Black finish that adds modern elegance to any kitchen. It fits most standard brand air gap bodies and includes a skirted design that installs flush to the sink deck.
Pros
- Matte Black finish
- Solid brass durability
- Fits most brands
- Classic design
Cons
- Replacement only
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Built to last, the cap is resistant to corrosion and rust, offering years of reliable performance. While it is a replacement cap only, its classic design complements any home decor and matches faucets or sinks perfectly.
With eight color options available, users can choose the exact match for their kitchen setup. The hassle-free installation requires no special tools, making it a convenient upgrade for existing dishwasher plumbing systems.
Ideal for those seeking a dark, sophisticated look, this cap ensures your air gap blends seamlessly into your cabinetry. Its durability and style make it a preferred choice for modern kitchen remodels.
Classic and Sensible Styling
The skirted cap covers the entire body for a clean look that complements any home decor style.
Multiple Color Options
Choose from eight color options to perfectly match your kitchen sink and kitchen faucet for a cohesive look.
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8. Prime-Line MP53045 Cover – Simple Steel Replacement
Prime-Line MP53045 Cover
Material Stamped steel
Finish Chrome Plated
Pack Single Pack
Installation Push on
Constructed from stamped steel with a chrome plated finish, this cover offers a simple and effective replacement for dishwasher air gaps. Designed to fit over most air gaps, it allows air or water to vent efficiently during the cycle.
Pros
- Stamped steel
- Chrome finish
- Easy push on
- Fits most gaps
Cons
- Single pack only
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The package includes one air gap cover that installs via a simple push-on method. Its standard design ensures compatibility with most models without requiring special adapters or tools for setup.
While it is a single pack and made of stamped steel rather than solid brass, it provides a functional solution for minor repairs or aesthetic refreshes. The chrome finish keeps it bright and visible for inspection.
This model is best for users needing a quick and straightforward cap replacement. Its push-on installation and universal fit make it a convenient choice for standard plumbing configurations.
Constructed from Stamped Steel
The stamped steel construction with chrome finish provides a reliable and durable cap for standard air gaps.
Designed to Fit Most Gaps
Designed to fit over most air gaps for dishwashers, ensuring broad compatibility across different brands.
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9. KRAUS KAG-1MB Matte Black – Full Unit in Matte Finish
KRAUS KAG-1MB Matte Black
Material ABS plastic body
Finish Matte Black
Height 9 inches total
Cap Diameter 1 7/8 in
This KRAUS model provides a complete air gap kit in a striking Matte Black finish. The durable ABS plastic body and solid brass cover ensure reliable performance, while the corrosion-resistant finish does not dull or fade over time.
Pros
- Full kit included
- Solid brass cover
- Code compliant
- Corrosion resistant
Cons
- Body is plastic
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With an overall height of 9 inches and a cap diameter of 1 7/8 inches, it fits standard pre-drilled holes. The cap covers the entire body and installs flush to the sink deck for a clean look.
It meets code compliance requirements for dishwasher installations in many states, offering a one-year warranty. While the body is plastic, the brass cover ensures a high-end appearance and durability in daily kitchen use.
We recommend this full kit for those needing a complete replacement with style. Its universal design and superior protection against wastewater backup make it a safe investment for clean dishes.
Full Kit Convenience
The kit includes durable ABS plastic body and solid brass cover for a lifetime of reliable performance in any kitchen.
Corrosion Resistant Finish
Premium corrosion-resistant finish will not dull or fade over time, complementing your kitchen faucet with style.
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10. Dishwasher Air Gap Cap Matte Black – Elegant Dark Finish
Dishwasher Air Gap Cap Matte Black
Material High-quality brass
Finish Matte black
Cap Diameter 1.8 inches
Pipe 7/8 and 5/8
This premium replacement kit features a high-end matte black finish with a curved top design to prevent water vapor buildup. It includes a matching escutcheon that covers the entire air gap body and installs flush with the sink deck.
Pros
- Elegant matte black
- Curved top design
- Universal fit
- Easy installation
Cons
- Replacement only
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Constructed from high-quality brass and durable ABS plastic, it ensures exceptional corrosion resistance. With a 1.8-inch diameter and pipes measuring 7/8 and 5/8 inches, it suits most kitchen sinks and dishwashers.
As a replacement kit, it assumes your existing plumbing is functional. The classic and sensible design complements any home decor, offering a clean appearance that enhances visual appeal in your kitchen.
Ideal for users upgrading to a dark finish, this kit requires no special tools for setup. Its reliable performance and stylish look make it a great choice for modernizing kitchen plumbing fixtures.
Curved Top Prevents Buildup
The high-end matte black finish and curved top design prevent water vapor buildup and maintain a flawless appearance over time.
Universal Fit and Easy Install
Designed for easy setup, it requires no special tools and fits most kitchen sinks and dishwashers with standard dimensions.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Choosing the right air gap ensures code compliance and protects your dishwasher from backflow contamination.
Material Quality
Look for air gaps with solid brass covers or bodies. Brass offers superior corrosion resistance and a longer lifespan compared to plastic parts.
Choose brass for durability and a premium look that withstands kitchen humidity better than other materials.
Finish Options
Select a finish that matches your faucet and decor such as chrome, brushed nickel, or matte black. The finish should resist fading and corrosion.
Ensure the finish is corrosion-resistant to keep the unit looking clean over time without dulling or fading.
Dimensions and Fit
Check the cap diameter and overall height to ensure it fits your sink hole. Most require a 1 1/2 inch pre-drilled hole.
Verify measurements to avoid installation issues and ensure the unit installs flush with the sink deck.
Universal Compatibility
Ensure the kit is compatible with all dishwasher models. Universal designs prevent the need for special adapters.
Choose universal designs to simplify installation and guarantee a proper fit with your existing plumbing.
Code Compliance
Air gaps are required by plumbing codes in many states. Verify the model meets local requirements.
Select code-compliant models to avoid legal or insurance issues during home inspections.
Installation Ease
Look for kits requiring no special tools. Simple push-on or screw-in designs save time.
Choose easy-install options to minimize labor and ensure a secure fit quickly.
Warranty Coverage
Check for manufacturer warranties like one-year guarantees. This protects against early defects.
Prioritize brands offering satisfaction guarantees for reliable customer support.
Aesthetic Design
Skirted designs covering the body look cleaner. Select a style that enhances your kitchen.
Pick designs that install flush with the sink deck for a polished look.
How to Use and Care for Your Air Gap for Dishwasher
Install the air gap on your sink deck or countertop ensuring it is flush. Connect hoses properly to prevent clogs.
Periodically remove the cap and flush the air gap with water to clear debris. Use a bottle brush if needed to reach inside.
Check for leaks around the base and tighten connections. Ensure the cap screws on tightly to avoid splashes.
Frequently Asked Questions
Do I really need an air gap for my dishwasher?
In many states and regions, plumbing codes mandate an air gap to prevent wastewater from backing up into your dishwasher. It ensures hygiene by creating a physical gap that stops contaminated water from reaching your clean dishes. Installing one protects your health and avoids potential code violations.
What is the difference between a plastic and brass air gap?
Plastic air gaps are lightweight and affordable but may crack over time. Brass units offer superior durability and corrosion resistance. Choose brass for a longer-lasting solution that maintains a premium look in your kitchen.
How do I clean my air gap if it clogs?
Unscrew the cap and pour water down the hose to flush out debris. Use a small brush to clear any blockages. This simple maintenance keeps water flowing freely and prevents overflow.
Can I replace just the cap on my air gap?
Yes, many kits allow you to replace just the cap. Ensure the new cap fits the existing body dimensions. This saves money and effort if the body is still functional.
Is an air gap different from a high loop?
An air gap provides a physical break for backflow prevention. A high loop relies on hose routing. Air gaps are more reliable and required by codes in many areas.
Does the air gap fit all sink holes?
Most are designed for a standard 1 1/2 inch hole. Always check your sink and product specs before buying. Universal sizes ensure easy installation for most models.
How long do dishwasher air gaps last?
Brass units can last a decade or more with care. Plastic ones may need replacement sooner. Regular cleaning helps extend the lifespan significantly.
Where should I buy a replacement air gap?
Check reputable home improvement stores or online marketplaces. Compare ratings and warranty details before purchasing. This ensures you get a quality product.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
Our top picks offer reliable performance and stylish designs. The KRAUS KAG-1SFS and brushed nickel caps lead in durability and aesthetics.
Prioritize materials and finish to match your kitchen style. Ensure compatibility and code compliance to avoid issues.
Prices fluctuate so check current listings before buying. Verify dimensions for a perfect fit and lasting quality.