Westbrass Plastic Air Gap
4.6Editor score
Plastic body construction
Polished chrome finish
Standard size fit
In this guide
Choosing the right air gap for dishwasher is essential for preventing wastewater backup into your appliance. A quality unit ensures hygiene and meets plumbing codes in many regions. You need a durable design that fits your sink seamlessly while providing reliable protection.
We evaluated ten highly rated options based on build quality, design, and user feedback. Our analysis focuses on materials like brass and plastic, finish durability, and ease of installation. Each product was selected for its ability to prevent contamination effectively.
Every pick highlights key features, pros, and cons to help you decide quickly. Remember that prices and availability can change frequently on retail platforms. Always verify current specs and warranty details before making your final purchase today.
Top 3 Picks for Best Air Gap for Dishwasher
KRAUS Dishwasher Air Gap
4.8Editor score
Solid brass cover
Spot Free finish
Code compliant design
Dishwasher Air Gap Cover
4.8Editor score
Brushed nickel finish
Skirted design
Corrosion resistant
Top 10 Best Air Gap for Dishwasher in 2026 Compared
This table offers a side-by-side view of key specifications for all ten selected models. Compare materials, dimensions, and finishes to find the best fit for your kitchen sink setup.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS KAG-1SFS
9 inch overall height
1 7/8 cap diameter
Stainless steel finish
ABS plastic body
4.8Editor score
Editor's Choice
2-Pack Silicone Splash Guard
5.12 by 2.1 size
1.5 inner hole
4 degree slope
Food grade silicone
4.3Editor score
Best Premium
Dishwasher Air Gap Cover
Brushed nickel finish
1.8 inch diameter
Curved top design
Brass cap body
4.7Editor score
Westbrass Plastic Air Gap
2 pack included
Polished chrome finish
Plastic body
Standard cap lip
4.6Editor score
Air Gap Kits with Cover
Solid brass cap
Polished chrome finish
Seven color options
Universal fit design
4.6Editor score
Dishwasher Air Gap Cover
Brushed nickel finish
Skirted design
1.8 inch cap
Solid brass core
4.8Editor score
Dishwasher Air Gap Cover
Matte black finish
Skirted design
Solid brass cap
Eight color options
4.7Editor score
Prime-Line MP53045
Stamped steel material
Chrome plated finish
Single pack
Push on install
4.5Editor score
KRAUS KAG-1MB
9 inch overall height
1 7/8 cap diameter
Matte black finish
ABS plastic body
4.8Editor score
Dishwasher Air Gap Cover
Matte black finish
Curved top design
1.8 inch diameter
Brass cap body
4.7Editor score
1. KRAUS Dishwasher Air Gap – Best Overall Air Gap
KRAUS Dishwasher Air Gap
Solid brass cover
9 inch overall height
Corrosion resistant finish
Universal design fit
The KRAUS Air Gap KAG-1SFS is the top choice for reliability and style. It holds a 4.8 rating and uses solid brass for long-term durability. Its Spot Free finish resists rust and matches most kitchen faucets perfectly.
Pros
- Premium brass construction
- Compliance with codes
- Sleek stainless finish
- Excellent warranty support
- Prevents contamination risk
Cons
- Higher price point
- Requires pre-drilled hole
We may earn a commission when you buy through this link, at no additional cost to you.
This unit prevents wastewater from backing up into your dishwasher effectively. The ABS plastic body combined with the brass cover ensures robust performance. It meets plumbing code requirements in many states for safe installation.
The pre-drilled hole requirement may need adjustments for some sinks. However, the clean look and reliable function make it worth the effort. Its design covers the body flush to the deck for a sleek appearance.
Buy this if you want a high-end solution that lasts. It fits all dishwashers and protects your clean dishes from contamination. The included kit makes setup straightforward for most homeowners today.
Superior Durability Materials
Solid brass and premium ABS ensure resistance to corrosion and rust over years of use.
Code Compliance Assurance
Meets local plumbing codes to prevent costly rework or safety hazards during installation.
We may earn a commission when you buy through this link, at no additional cost to you.
2. 2-Pack Silicone Splash Guard – Best Accessory Air Gap
2-Pack Silicone Splash Guard
5.12 by 2.1 size
1.5 inner hole
Food grade silicone
4 degree slope
This silicone splash guard helps catch drips around your air gap. It is rated 4.3 stars and works with most standard gap diameters. The ramp design directs water into the sink effectively.
Pros
- Prevents countertop mess
- Flexible silicone material
- Two color choices
- Easy clean maintenance
- Universal size fit
Cons
- Not a full kit
- Only covers overflow
We may earn a commission when you buy through this link, at no additional cost to you.
Made from 100% food-grade silicone, it is safe and odorless. The grey and black options blend well with modern decor. Its slope ensures water drains without pooling on counters.
Note that this is an accessory and not a full air gap kit. It fits over existing units to prevent splashes from leaking. Some users may need to check compatibility before buying.
Choose this if you already have a gap but want to reduce cleanup. It adds elegance and function without needing plumbing changes. A practical upgrade for a tidy kitchen space.
Waterflow Management
The ramp slope catches drips and directs them into the sink to keep counters dry.
Aesthetic Versatility
Available in grey and black to match your sink and faucet style easily.
We may earn a commission when you buy through this link, at no additional cost to you.
3. Dishwasher Air Gap Cover – Best Premium Air Gap
Dishwasher Air Gap Cover
Brushed nickel finish
1.8 inch diameter
Curved top design
Brass cap body
This cover kit offers premium style with a brushed nickel finish. Rated 4.7 stars, it uses solid brass for long durability. It prevents wastewater backup and enhances kitchen aesthetics seamlessly.
Pros
- High-end finish
- Corrosion resistant
- Universal fit size
- Easy installation
- Prevents vapor buildup
Cons
- Replacement cap only
- Check pipe sizes
We may earn a commission when you buy through this link, at no additional cost to you.
The curved top prevents water vapor buildup to reduce paint peeling. It fits most sinks with a 1.8 inch cap diameter. Installation is simple and requires no special tools for setup.
Ensure your existing pipes match the 7/8 and 5/8 inch measurements. If not, this cover works best as a replacement for a standard body. The skirted design covers the gap body for a clean look.
Buy this to upgrade an old gap without replacing plumbing. It offers reliable backflow prevention with a high-end touch. Perfect for those wanting elegance and function in one package.
Premium Material Quality
Solid brass and ABS plastic ensure resistance to rust and long-lasting performance.
Design Functionality
The curved top and skirted cap cover the body while preventing vapor damage.
We may earn a commission when you buy through this link, at no additional cost to you.
4. Westbrass Plastic Air Gap – Best Budget Air Gap
Westbrass Plastic Air Gap
2 pack included
Polished chrome finish
Plastic body
Standard cap lip
The Westbrass 2 Pack is the most cost-effective option here. Rated 4.6 stars, it provides essential backflow protection. Two units give you a spare for any future needs easily.
Pros
- Affordable price
- Two units included
- Standard dimensions
- Simple design
- Easy to install
Cons
- Plastic construction
- Exposed body lip
We may earn a commission when you buy through this link, at no additional cost to you.
It features a polished chrome finish that matches common kitchen faucets. The plastic body is durable enough for standard home use. Dimensions match standard plumbing code requirements for safe setup.
Note that the cap leaves the body lip exposed when installed. This can look less finished compared to skirted designs. However, it remains a reliable functional unit for tight budgets.
Choose this if you need a simple solution without extra costs. It prevents dirty water from flowing back into your dishwasher. Ideal for renters or quick replacements where style matters less.
Value Pack Deal
Two units included in one package to save money on multiple or spare gaps.
Standard Compatibility
Meets standard hole size and pipe dimensions for broad installation compatibility.
We may earn a commission when you buy through this link, at no additional cost to you.
5. Air Gap Kits with Cover – Best Variety Air Gap
Air Gap Kits with Cover
Solid brass cap
Polished chrome finish
Seven color options
Universal fit design
This kit offers seven color options to match your kitchen faucet. Rated 4.6 stars, it includes a skirted cover and escutcheon. The brass cap ensures durability while the body fits most dishwashers.
Pros
- Multiple color choices
- Skirted cover included
- Solid brass cap
- Universal fit
- Easy install
Cons
- Standard ABS body
- Color varies by batch
We may earn a commission when you buy through this link, at no additional cost to you.
It prevents wastewater contamination effectively and looks clean on the deck. Installation is hassle-free and requires no special tools for most setups. The design covers the entire body for a neat appearance.
Some users report color variations between batches so check carefully. The ABS body is standard and may not feel as premium as full metal units. Still, it is a great option for style customization.
Buy this if matching your sink or faucet color is a priority. It offers good value with a reliable brass cap. A solid pick for homeowners wanting a custom look without high costs.
Style Customization
Seven color options let you match your exact sink or faucet finish perfectly.
Complete Kit Value
Includes cap and escutcheon so you have everything for a clean install.
We may earn a commission when you buy through this link, at no additional cost to you.
6. Dishwasher Air Gap Cover – Best Replacement Cap Air Gap
Dishwasher Air Gap Cover
Brushed nickel finish
Skirted design
1.8 inch cap
Solid brass core
This brushed nickel cover is a high-quality replacement for existing gaps. Rated 4.8 stars, it features a solid brass core for longevity. It fits most units with a 1.8 inch cap diameter perfectly.
Pros
- Solid brass core
- Skirted aesthetic
- Easy to clean
- Universal size
- Prevents leaks
Cons
- Replacement cap only
- Check dimensions first
We may earn a commission when you buy through this link, at no additional cost to you.
The skirted design covers the tubing for a clean look on your counter. It prevents dirty water from flowing back to avoid cross-contamination. Maintenance is easy due to the smooth stain-resistant surface.
Remember this is a cover only and does not include the body. You must verify your existing vent hole height before purchasing. If compatible, it offers a stylish upgrade at a great price.
Choose this if you have a working gap but a worn cap. It adds durability and elegance without plumbing overhaul. A smart solution for keeping your kitchen sink looking new.
High Durability Build
Solid brass core resists rust and water stains better than plastic alternatives.
Stylish Function
The skirted cap covers tubing and maintains a clean flush look.
We may earn a commission when you buy through this link, at no additional cost to you.
7. Dishwasher Air Gap Cover – Best Matte Black Air Gap
Dishwasher Air Gap Cover
Matte black finish
Skirted design
Solid brass cap
Eight color options
This matte black cover brings modern contrast to black sinks and faucets. Rated 4.7 stars, it uses a solid brass cap for durability. Eight color options ensure you can match your specific kitchen style.
Pros
- Matte black finish
- Eight color options
- Solid brass cap
- Skirted look
- Hassle-free install
Cons
- Replacement cap only
- Finish shows scratches
We may earn a commission when you buy through this link, at no additional cost to you.
It covers the air gap tubing for a streamlined appearance. The brass construction ensures resistance to corrosion and rust over time. Installation is easy and designed for quick setup.
As a replacement cap, you must check your existing unit dimensions. Matte black finishes can show fingerprints but they wipe clean easily. It offers great value for those wanting a dark aesthetic.
Buy this if you need a dark finish that matches your kitchen theme. It provides reliable backflow prevention with a bold look. A great upgrade for contemporary kitchens and modern appliances.
Modern Aesthetic Match
Matte black finish is ideal for black sinks and faucets to complete your style.
Durable Construction
Solid brass cap provides long service life and corrosion resistance.
We may earn a commission when you buy through this link, at no additional cost to you.
8. Prime-Line MP53045 – Best Basic Air Gap
Prime-Line MP53045
Stamped steel material
Chrome plated finish
Single pack
Push on install
The Prime-Line MP53045 is a no-fuss cover for standard gaps. Rated 4.5 stars, it is made from stamped steel with chrome plating. It provides essential coverage and venting for your dishwasher safely.
Pros
- Stamped steel build
- Chrome plated finish
- Simple installation
- Universal fit
- Low price
Cons
- Basic design
- Single unit only
We may earn a commission when you buy through this link, at no additional cost to you.
It features an easy push-on installation over the air gap base. Designed to fit most units, it requires no special tools or screws. A practical solution for functional needs without extra features.
The basic design means no skirted cap for a hidden look. You may see the body tubing depending on your sink setup. Still, it works reliably and is very affordable for replacements.
Choose this for simple functional upgrades on a tight budget. It protects against backflow without requiring plumbing changes. Ideal for basic homes or rental units needing a quick fix.
Basic Reliability
Simple stamped steel design provides essential protection without extra costs.
Universal Fit
Fits most dishwasher gaps with a standard push-on installation method.
We may earn a commission when you buy through this link, at no additional cost to you.
9. KRAUS KAG-1MB – Best Full Kit Black Air Gap
KRAUS KAG-1MB
9 inch overall height
1 7/8 cap diameter
Matte black finish
ABS plastic body
This is a full air gap kit from KRAUS in matte black. Rated 4.8 stars, it includes an ABS body and solid brass cover. It ensures reliable backflow prevention and meets plumbing code standards.
Pros
- Full kit included
- Matte black finish
- Solid brass cover
- Universal design
- Code compliance
Cons
- Requires hole drill
- Higher price
We may earn a commission when you buy through this link, at no additional cost to you.
The premium corrosion-resistant finish does not dull or fade over time. The cap covers the body flush to the sink for a clean look. It fits all dishwashers and complements modern kitchen faucets.
Installation requires a pre-drilled hole of 1 1/2 inches which may be extra work. The price is higher than basic options but the quality is superior. You get a complete reliable unit in one box.
Buy this if you need a full replacement for a modern kitchen. It offers both function and premium aesthetics in one product. The best choice for homeowners upgrading their entire setup today.
Complete Solution
Includes both body and cover for a full replacement without separate parts.
Code Compliance
Meets plumbing codes in many states to prevent installation issues.
We may earn a commission when you buy through this link, at no additional cost to you.
10. Dishwasher Air Gap Cover – Best Matte Kit Air Gap
Dishwasher Air Gap Cover
Matte black finish
Curved top design
1.8 inch diameter
Brass cap body
This kit provides a matte black finish for stylish replacements. Rated 4.7 stars, it uses a high-quality brass cap and ABS body. The curved top prevents vapor buildup to maintain a flawless appearance.
Pros
- Matte black finish
- Curved top
- Brass cap
- Universal fit
- Easy installation
Cons
- Replacement kit
- Check dimensions
We may earn a commission when you buy through this link, at no additional cost to you.
It fits most kitchen sinks with a 1.8 inch diameter. Installation is hassle-free and requires no special tools for most setups. The design covers the entire body with an escutcheon for a clean look.
Ensure your existing hole matches before purchasing this replacement kit. The matte black finish offers a modern contrast to light sinks. It is a practical choice for updating an old gap.
Choose this for a sleek dark look without a full plumbing overhaul. It prevents wastewater backflow with premium materials. A solid option for homeowners wanting both style and reliable performance today.
Visual Appeal
Matte black finish enhances kitchen visual appeal with a modern finish.
Vapor Prevention
Curved top design reduces water vapor buildup to protect your decor.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best Air Gap for Dishwasher
Selecting the right air gap involves understanding materials, dimensions, and design features. This section breaks down the key factors to consider for a lasting and code-compliant installation.
Material Durability
The body and cap materials determine resistance to corrosion and wear. Brass caps offer longevity while plastic bodies are cost-effective. Look for stainless steel or coated finishes to prevent rust.
Prioritize solid brass and stainless finishes for lasting use.
Finish and Style
Finishes like polished chrome, matte black, or brushed nickel impact aesthetics. Choose one that matches your faucet and sink for a cohesive look. Some finishes hide fingerprints better than others.
Pick a finish that complements your existing kitchen hardware.
Dimensions and Fit
Check the cap diameter and overall height against your sink hole size. Standard sizes usually match 1.8 inch caps with 1.5 inch holes. Measure your existing gap to avoid return hassles later.
Verify dimensions before buying to ensure a proper fit.
Installation Requirements
Most kits require a pre-drilled hole and standard plumbing connections. Some options are replacement caps only while others include the full body. Ensure you have the tools and space for setup.
Confirm if you need a full kit or just a replacement cap.
Code Compliance
Many regions require dishwasher air gaps by plumbing code. Ensure your chosen unit meets local standards to avoid fines. Some models explicitly state they are code compliant in their description.
Check local codes to stay compliant and avoid penalties.
Backflow Prevention
The primary role is to prevent contaminated water from entering your machine. Reliable units use air break designs to separate waste from clean water. Look for trusted brands with strong user ratings.
Focus on backflow prevention to keep your dishes clean.
Budget Considerations
Prices vary from affordable plastic options to premium brass models. Set a budget that balances quality with cost for your needs. Often a mid-range option offers the best value overall.
Balance price with quality to get the best value.
Warranty and Support
Manufacturers offer different warranty terms ranging from months to years. Best-in-industry support can help resolve issues with installation quickly. Check the product page for warranty details before buying.
Choose brands with strong support for long-term peace of mind.
How to Use and Care for Your Air Gap for Dishwasher
Install the unit securely on your sink or countertop to ensure a tight seal. Connect the inlet from your dishwasher and outlet to your drain properly.
Regularly check the cap for buildup that could restrict flow or cause leaks. Use mild soap and water to clean the finish gently without harsh chemicals.
If water sprays from the gap during use, your drain line may be clogged. Clear debris from the hose to maintain consistent performance and prevent backup.
Frequently Asked Questions
Do I really need an air gap for dishwasher?
In many regions plumbing code requires an air gap to prevent contamination of your clean dishes. It creates a physical separation between your drain water and dishwasher outlet. Skipping it can lead to backflow issues or failed inspections.
What happens if my air gap clogs?
A clogged gap may spray dirty water onto your countertop during cycles. Clear the blockage by removing the cap and rinsing the hoses with water. This maintenance step helps keep your sink area dry and clean.
How do I clean my dishwasher air gap?
Remove the cap and rinse the inner parts under running water. Use a soft brush to clear any grease buildup inside the tubing. Wipe the exterior finish with mild soap to avoid scratches.
Will an air gap affect my dishwasher performance?
A properly installed unit does not hinder the wash cycles of your machine. It provides a safe drainage path without adding pressure resistance. If performance drops, check for clogs rather than the gap itself.
Can I hide an air gap in my countertop?
Most modern designs are flush-mounted to look clean on countertops. Some kits include matching covers to help them blend seamlessly with your surface. Check product specs to confirm they support a flush install.
Are dishwasher air gaps interchangeable?
Most units follow standard pipe sizes making them broadly compatible with sinks. Always verify diameter and pipe thickness before swapping out old parts. Universal kits simplify replacement across different sink models.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
You now have ten top-rated options ranging from premium kits to affordable covers. The KRAUS models lead in durability while the silicone splash guard offers a practical accessory. Consider your sink size and style needs carefully before buying.
Prioritize corrosion resistance and code compliance to ensure long-term reliability. A solid brass cap combined with a reliable body will protect your dishes and your home plumbing system. Do not overlook the warranty details.
Prices and stock levels change daily so verify the current details before purchase. Use the comparison table to find the best match for your budget. A right choice keeps your kitchen safe and stylish for years.