Westbrass Plastic Air Gap 2 Pack Polished Chrome
4.6Editor score
Plastic body included standard
1-5/8 in cap diameter
9 in overall height
In this guide
Choosing the right air gap for dishwasher protection is essential for maintaining a hygienic kitchen environment. It prevents wastewater from backing up into your machine. ensuring your clean dishes stay sanitary throughout the wash cycle.
We compared ten real products based on durability, material quality, and design fit. Each option offers unique features like brass construction or silicone guards to suit different sink layouts and aesthetic preferences.
Each pick shows key specs and real-world performance details to guide your choice. Prices change often so verify current listings before buying to ensure you get the best value 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
Corrosion resistant finish
Universal design fits all
Dishwasher Air Gap Cover Dishwasher Air Gap Cap for Kitchen Sink Solid Brass
4.7Editor score
Premium brass construction
Brushed nickel finish
Efficient backflow prevention
Top 10 Best Air Gap for Dishwasher in 2026 Compared
This side-by-side comparison reviews all ten products to highlight their unique specifications and strengths. Use this table to quickly identify which model fits your specific sink requirements and design preferences best.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Spot Free All-Brite Stainless Steel
Solid brass cover included
9 inch overall height
Corrosion resistant finish
Universal dishwasher design
4.8Editor score
Editor's Choice
2-Pack Dishwasher Air Gap Cover Silicone Splash Guard
Food grade silicone material
5.12 inch length size
4 degree overflow slope
Grey and black colors
4.3Editor score
Best Premium
Dishwasher Air Gap Cover Solid Brass Overflow Vent Cap
High quality brass cap
Brushed nickel finish style
1.8 inch cap diameter
Curved top design
4.7Editor score
Westbrass Plastic Air Gap 2 Pack Polished Chrome
Plastic body included set
1-5/8 in cap size
2-1/4 in cap height
Chrome polished finish
4.6Editor score
Dishwasher Air Gap Kits with Cover and Escutcheon
Solid brass air gap cap
Polished chrome finish option
Universal air cap kit
Classic design styling
4.6Editor score
Dishwasher Air Gap Cover Kitchen Solid Brass Skirted
Solid brass core material
Skirted design aesthetic
Brushed nickel finish
1.80 inch diameter
4.8Editor score
Dishwasher Air Gap Cover Black Only Skirted Solid Brass
Universal standard size fit
Matte black finish cap
Solid brass construction
Classic design styling
4.7Editor score
Prime-Line MP53045 Dishwasher Air Gap Cover
Stamped steel material
Chrome plated finish
Easy push on install
Single pack content
4.5Editor score
KRAUS Dishwasher Air Gap in Matte Black
Solid brass cover included
9 inch overall height
Matte black finish
Universal dishwasher design
4.8Editor score
Dishwasher Air Gap Cover Solid Brass Overflow Vent Cap Matte Black
High quality brass cap
Matte black finish style
1.8 inch cap diameter
Curved top design
4.7Editor score
1. KRAUS Air Gap – Best Overall for Quality
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel
Solid brass cover included
Premium corrosion resistance
Universal design fits
Clean flush install
This KRAUS air gap stands out as the top choice for homeowners seeking reliability and style. With a 4.8 rating from users it delivers consistent protection against wastewater backup while maintaining a sleek stainless steel look.
Pros
- Superior durability with brass
- High-end appearance finish
- Prevents wastewater backing up
- Comes with full kit
- 1 year warranty support
Cons
- Price higher than plastic
- Pre-drilled hole needed
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The solid brass cover ensures long-term durability and resists corrosion far better than standard plastic options. Its universal design fits all major dishwashers and the clean look covers the body flush with the sink deck.
While the price is slightly higher than basic plastic models the investment in quality materials pays off in longevity and performance. The need for a pre-drilled hole is standard for most installations so it is not a significant drawback.
Homeowners who prioritize a premium kitchen aesthetic and reliable plumbing safety should choose this model. It combines functional performance with high-end design elements that enhance the overall sink area appearance.
Superior Material Durability
The solid brass cover offers exceptional resistance to rust and wear ensuring the air gap remains functional and attractive for years.
Clean and Flush Installation
The cap covers the entire body and installs flush to the sink deck for a seamless clean look that modernizes your kitchen setup.
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2. Silicone Splash Guard – Best for Leak Prevention
2-Pack Dishwasher Air Gap Cover Silicone Splash Guard
Food grade silicone
5.12 inch length
4 degree slope drain
Two color options
This silicone splash guard is a practical accessory designed to catch drips and direct water flow into the sink. It is ideal for users dealing with minor overflow issues or wanting to protect their countertop from water stains.
Pros
- Catches drips effectively
- Reduces counter wiping
- Durable and odorless
- Easy to clean
- Fits most gaps
Cons
- Accessory not full unit
- Slightly bulky design
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Made from 100 percent food-grade silicone it is safe odorless and durable. The 4-degree slope helps water drain efficiently reducing the need to wipe down surfaces frequently after dishwashing cycles.
While it is not a full air gap replacement it serves well as a supplementary measure for leak control. The two color options allow it to blend with your kitchen decor and it is easy to clean by hand.
Buyers looking for an affordable way to manage minor splashes will find this guard useful. It works best when paired with a properly functioning air gap to prevent water from splashing all over the sink area.
Effective Water Direction
The ramp design catches drips from the air gap cover and directs them into the sink keeping your countertop dry and clean.
Premium Silicone Material
Constructed from food-grade silicone it is safe for kitchen use and resists odors while remaining easy to clean and durable over time.
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3. Brushed Nickel Cap – Best Stylish Replacement
Dishwasher Air Gap Cover Solid Brass Overflow Vent Cap
High quality brass cap
Brushed nickel finish
Curved top design
1.8 inch diameter
This replacement kit focuses on aesthetics with a high-end brushed nickel finish that enhances the visual appeal of your kitchen sink. It is designed to fit most standard air gap bodies and includes a curved top to prevent vapor buildup.
Pros
- Elegant high-end design
- Prevents water buildup
- Universal fit standard
- Corrosion resistant
- Easy installation
Cons
- Replacement only not kit
- Check size compatibility
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The brass construction ensures durability and resistance to corrosion while the curved top design reduces the risk of paint peeling over time. It installs flush with the sink deck for a clean appearance that complements any home decor.
While it is a replacement kit rather than a full air gap unit it is perfect for upgrading an existing setup. Users should verify the height of existing ventilation holes before purchasing to ensure a perfect fit.
Those seeking to modernize their kitchen sink look will appreciate this stylish and functional cap. It combines practical benefits with an elegant design that elevates the overall sink area.
Elegant Design Benefits
The high-end brushed nickel finish enhances visual appeal and the curved top prevents water vapor buildup to maintain a flawless look.
Efficient Backflow Prevention
Designed to prevent wastewater from backing up into your dishwasher it effectively keeps dishes clean and ensures a hygienic kitchen environment.
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4. Westbrass 2-Pack – Best Value Set
Westbrass Plastic Air Gap 2 Pack Polished Chrome
Plastic body included
1-5/8 in cap
2-1/4 in height
Chrome polished finish
This two-pack option offers excellent value for homeowners needing multiple units or spare parts. Each cap includes a plastic body and polished chrome finish providing a standard air gap solution that fits most common dishwasher setups.
Pros
- Two units in pack
- Affordable price point
- Standard air gap cap
- Polished chrome style
- Fits most setups
Cons
- Plastic body less durable
- Lip exposed when install
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The 1-5/8 inch cap diameter and 9-inch overall height make it compatible with many sink configurations. While the plastic body is less durable than brass it still provides reliable function for typical household use.
One note is that the cap leaves the lip of the air gap body exposed when installed which may not appeal to all users seeking a fully covered look. However the polished chrome finish adds a touch of elegance to the sink deck.
Buyers looking for a cost-effective and reliable solution will find this set practical. It is especially useful for rentals or secondary kitchens where a premium finish is less critical than basic functionality.
Value of Two Pack
Getting two units in one purchase offers great value for those needing backups or replacements for multiple sinks without extra cost.
Standard Design Fit
The standard cap and body dimensions ensure compatibility with most existing air gap bodies making installation straightforward for typical setups.
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5. Polished Chrome Kit – Best Classic Look
Dishwasher Air Gap Kits with Cover and Escutcheon
Solid brass cap included
Polished chrome finish
Flange plastic body
Classic design style
This kit provides a complete replacement solution with a solid brass cap and matching escutcheon. The polished chrome finish complements any home decor and the skirted design ensures a clean look by covering the entire air gap body.
Pros
- Matching escutcheon included
- Durable brass cap
- Resists corrosion rust
- Fits most dishwashers
- Clean flush look
Cons
- Plastic body not brass
- Check color options
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The durable ABS plastic body combined with the brass cap offers maximum durability and resistance to corrosion. It fits most of dishwashers and prevents wastewater from backing up into your machine to eliminate contamination risks.
Installation is designed to be hassle-free allowing for quick setup on the sink deck or countertop. While the body is plastic the brass cap ensures the visible part remains high-quality and long-lasting for years.
Homeowners seeking a classic and sensible design will appreciate the polished chrome finish and clean look. It balances practical performance with aesthetic appeal to enhance the kitchen sink area.
Classic Design Appeal
The polished chrome finish and skirted design complement any home decor providing a classic look that enhances the overall kitchen sink area.
Reliable Performance
With brass cap construction and plastic body it offers resistance to corrosion and rust ensuring years of reliable performance.
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6. Skirted Brass Cover – Best for Aesthetics
Dishwasher Air Gap Cover Kitchen Solid Brass Skirted
Solid brass core
Skirted design style
Brushed nickel finish
1.80 inch diameter
This air gap cover features a solid brass core with a brushed nickel finish for excellent durability and corrosion resistance. The skirted design covers the entire tubing and installs flush with the countertop for a clean and seamless appearance.
Pros
- Prevents dirty water flow
- Excellent corrosion resistance
- Does not leave stains
- Flush with countertop
- Easy slip on install
Cons
- Replacement only item
- Check existing hole size
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It effectively prevents dirty water from flowing back into the dishwasher and avoids cross-contamination. The curved top prevents water accumulation to avoid paint peeling ensuring a flawless appearance over time without leaving water stains.
The removable design simplifies routine maintenance and blockage clearing while the smooth surface allows easy cleaning. Before purchasing you should check the height of existing ventilation holes and the diameter of the bottom for compatibility.
Buyers looking to upgrade their kitchen sink appearance will find this cover ideal. It combines functional backflow prevention with a stylish look that matches many modern kitchen designs perfectly.
Stylish Skirted Design
The skirted design covers the entire air gap tubing and installs flush with the countertop for a clean look that matches your kitchen ideally.
Durable Solid Brass
Engineered for longevity the solid brass core with brushed nickel finish offers excellent corrosion resistance and does not leave water stains.
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7. Matte Black Cap – Best for Dark Sinks
Dishwasher Air Gap Cover Black Only Skirted Solid Brass
Universal standard size
Matte black finish
Solid brass construction
Classic design style
This matte black air gap cover is perfect for matching dark kitchen sinks and faucets. It features a solid brass construction that resists corrosion and rust ensuring reliable performance over time for years.
Pros
- Perfect for black sinks
- Solid brass cap
- Resists corrosion rust
- Classic design styling
- Hassle-free install
Cons
- Only cap included
- Check eight color options
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The classic design and skirted cap cover the entire air gap body and install flush to the sink deck for a clean look. It fits most of brand's air gap bodies making it a versatile replacement choice.
Installation is designed to be hassle-free allowing for quick setup without special tools. The matte black finish complements any home decor and the eight color options ensure you find a match for your kitchen sink.
Owners of black or dark fixtures will appreciate this coordinated look. It balances durability with aesthetic appeal to enhance the kitchen sink area while providing necessary wastewater protection.
Perfect Color Match
The matte black finish allows you to choose from eight color options to perfectly match with your kitchen sink and kitchen faucet.
Durable Construction
Solid brass construction cap ensures maximum durability and resistance to corrosion and rust for years of reliable performance.
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8. Prime-Line Steel Cover – Best Budget Option
Prime-Line MP53045 Dishwasher Air Gap Cover
Stamped steel material
Chrome plated finish
Easy push on install
Single pack content
This Prime-Line air gap cover is constructed from stamped steel with a chrome plated finish providing a sturdy and affordable solution. It is designed to fit over most air gaps for dishwashers ensuring compatibility with many setups.
Pros
- Affordable price point
- Stamped steel durability
- Fits most gaps
- Chrome plated finish
- Easy installation
Cons
- Single pack only
- Steel may rust over
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The easy push-on installation allows you to vent air or water from your dishwasher quickly without special tools. The chrome plated finish adds a touch of style while protecting the steel from minor wear and tear.
While the steel may not resist rust as well as brass it offers a reliable basic function for budget-conscious buyers. The single pack makes it a good option for replacing a single damaged cover without extra cost.
Homeowners needing a quick and inexpensive replacement will find this cover practical. It delivers essential function and a polished look at an accessible price point for any kitchen.
Affordable Sturdy Design
Constructed from stamped steel with a chrome finish it offers a durable and stylish replacement at a budget-friendly price.
Universal Fit Compatibility
Designed to fit over most air gaps for dishwashers it ensures quick venting of air and water for effective dishwasher operation.
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9. KRAUS Matte Black – Best Premium Dark Finish
KRAUS Dishwasher Air Gap in Matte Black
Solid brass cover included
9 inch overall height
Matte black finish
Corrosion resistant
This KRAUS matte black air gap offers the same premium quality as its stainless counterpart but in a sleek dark finish. With a 4.8 rating it delivers consistent protection against wastewater backup while complementing modern kitchen aesthetics.
Pros
- Superior durability with brass
- High-end matte look
- Prevents wastewater backing up
- Comes with full kit
- 1 year warranty support
Cons
- Price higher than plastic
- Pre-drilled hole needed
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The solid brass cover ensures long-term durability and the corrosion resistant finish will not dull or fade over time. Its universal design fits all major dishwashers and the clean look covers the body flush with the sink deck.
While the price is higher than basic models the investment in quality materials pays off in longevity and performance. The need for a pre-drilled hole is standard for most installations so it is not a significant drawback.
Homeowners who prioritize a dark kitchen aesthetic and reliable plumbing safety should choose this model. It combines functional performance with high-end design elements that enhance the overall sink area appearance.
Premium Matte Finish
The corrosion and rust resistant finish will not dull or fade over time providing a sleek matte black look that complements your faucet.
Superior Material Durability
The solid brass cover offers exceptional resistance to rust and wear ensuring the air gap remains functional and attractive for years.
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10. Matte Black Cap – Best Replacement Kit
Dishwasher Air Gap Cover Solid Brass Overflow Vent Cap Matte Black
High quality brass cap
Matte black finish style
Curved top design
1.8 inch diameter
This replacement kit focuses on aesthetics with a high-end matte black finish that enhances the visual appeal of your kitchen sink. It is designed to fit most standard air gap bodies and includes a curved top to prevent vapor buildup.
Pros
- Elegant matte design
- Prevents water buildup
- Universal fit standard
- Corrosion resistant
- Easy installation
Cons
- Replacement only not kit
- Check size compatibility
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The brass construction ensures durability and resistance to corrosion while the curved top design reduces the risk of paint peeling over time. It installs flush with the sink deck for a clean appearance that complements any home decor.
While it is a replacement kit rather than a full air gap unit it is perfect for upgrading an existing setup. Users should verify the height of existing ventilation holes before purchasing to ensure a perfect fit.
Those seeking to modernize their kitchen sink look will appreciate this stylish and functional cap. It combines practical benefits with an elegant design that elevates the overall sink area.
Elegant Design Benefits
The high-end matte black finish enhances visual appeal and the curved top prevents water vapor buildup to maintain a flawless look.
Efficient Backflow Prevention
Designed to prevent wastewater from backing up into your dishwasher it effectively keeps dishes clean and ensures a hygienic kitchen environment.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Selecting the right air gap requires considering material durability, design compatibility, and installation requirements to ensure long-term performance and visual appeal.
Material Quality and Durability
Materials like solid brass offer superior corrosion resistance and longevity compared to plastic options. Brass components ensure the visible parts of the air gap remain attractive and functional for years of regular use in a moist kitchen environment.
Prioritize models with brass covers to avoid rust and maintain a high-end appearance over time.
Design and Finish Compatibility
Choose a finish that matches your sink and faucet such as brushed nickel, chrome, or matte black. This ensures the air gap blends seamlessly into your kitchen decor rather than standing out as an unsightly accessory.
Match the finish to your existing hardware for a cohesive and professional kitchen look.
Universal Fit and Sizing
Ensure the cap diameter and pipe sizes match your existing air gap body to avoid installation issues. Most units fit standard 1.8-inch caps but always verify dimensions before purchasing to ensure compatibility with your setup.
Measure your existing hole and body to confirm the new unit fits properly.
Backflow Prevention Capability
The primary function of an air gap is to prevent wastewater from backing up into your dishwasher. Look for models that effectively keep dishes clean and ensure a hygienic kitchen environment to avoid contamination risks.
Confirm the unit prevents wastewater from backing up into your dishwasher.
Installation Requirements and Tools
Some models require a pre-drilled hole of specific size while others are designed for easy push-on installation. Consider whether you have the necessary tools or if you need a plumber for the setup to avoid additional costs.
Check if a pre-drilled hole is required or if it fits existing holes easily.
Included Accessories and Kit Parts
Full kits often include the cap, escutcheon, and plastic body for a complete replacement solution. Accessories like splash guards can add extra protection against drips and splashes to keep your countertop dry and clean.
Look for kits with matching escutcheon and splash guards for a complete solution.
Warranty and Customer Support
A warranty like the 1-year guarantee offers peace of mind against manufacturing defects or early failures. Best-in-industry customer support ensures you have help if installation issues or product questions arise.
Prioritize brands offering at least a 1-year warranty for protection.
Cost vs. Longevity Balance
While plastic units are cheaper, brass models offer better long-term value due to superior durability. Consider the lifespan of the material when budgeting to avoid frequent replacements that increase overall costs over time.
Invest in higher-quality materials to save money on future replacements.
How to Use and Care for Your Air Gap for Dishwasher
Regularly inspect the air gap for blockages or debris that could hinder proper function. A clean unit ensures that wastewater flows correctly and prevents backup issues from occurring during normal dishwasher operation.
Clean the exterior with a mild soap solution to prevent buildup of soap scum or hard water stains. Use a soft cloth to avoid scratching polished or matte finishes that could compromise the aesthetic appeal of the unit.
If you notice water dripping from the air gap, check the drain hoses for kinks or obstructions that might cause overflow. Proper maintenance ensures that your air gap continues to protect your kitchen and dishwasher effectively.
Frequently Asked Questions
Is an air gap required for dishwasher installation?
In many states, plumbing codes require an air gap for dishwasher installation to prevent backflow contamination. Always check your local regulations to ensure compliance and avoid potential issues during inspection or future sales.
What happens if my dishwasher air gap is clogged?
A clogged air gap can cause water to back up into your sink or leak onto your countertop during cycles. Regular cleaning of the cap and internal pipes helps prevent blockages and maintains proper drainage flow.
Can I replace just the cap on my existing air gap?
Yes, many models offer replacement caps that fit standard air gap bodies. Ensure the diameter and height match your existing unit before purchasing to avoid compatibility issues during installation.
How do I know if my air gap is working correctly?
A properly functioning air gap should not leak water when the dishwasher is running. If you notice drips or backup, inspect the unit for blockages or improper installation that may require adjustment or cleaning.
What material is best for a dishwasher air gap?
Solid brass is the best material for durability and corrosion resistance. It maintains its appearance better than plastic and offers a longer service life in the humid kitchen environment.
Do I need to drill a hole for a new air gap?
Most air gap units require a pre-drilled hole of a specific size, typically 1.5 inches. Check your sink deck for an existing hole or consult installation guidelines to determine if drilling is needed.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
The KRAUS models stand out as top choices for quality and reliability in this category. They offer superior materials and designs that ensure long-term protection against wastewater contamination.
Prioritize material durability and finish compatibility to ensure your air gap matches your kitchen aesthetic while providing reliable function for years.
Remember to verify current prices and availability before making a final decision since they can fluctuate based on supply and demand.