<h2>Professional Brass R1234yf Quick Coupler AC Service Port Adapter Set</h2> <p>Keep your air conditioning service jobs running smoothly with this professional-grade Brass R1234yf Quick Coupler Adapter Set. Featuring one blue low-pressure and one red high-pressure quick coupler, this duo is purpose-built for R1234yf refrigerant systems — making manifold gauge connections, AC charging, diagnostic checks, recovery, and evacuation work faster and cleaner than ever.</p> <p>Crafted from solid brass, these adapters deliver lasting durability and a secure, leak-resistant seal every time. The bright-colored safety sleeve design prevents accidental refrigerant loss during connection and disconnection, while the 90° connector orientation makes accessing tight service ports easy and intuitive. Both couplers feature a standard 1/4 in. manifold hose connection for universal compatibility with common AC service equipment.</p> <p><strong>Made in China.</strong></p> <h3>Key Features</h3> <ul> <li> <strong>Compatible with R1234yf Refrigerant</strong> — Designed specifically for high and low-side service on R1234yf systems</li> <li> <strong>Solid Brass Construction</strong> — Resistant to corrosion and built to withstand repeated professional use</li> <li> <strong>Color-Coded Couplers</strong> — Blue for low pressure, red for high pressure — eliminate guesswork in the field</li> <li> <strong>Safety Sleeve Design</strong> — Bright sleeve prevents refrigerant loss and protects the user during coupling/decoupling</li> <li> <strong>90° Connector Angle</strong> — Easier access to service ports in confined engine bay spaces</li> <li> <strong>1/4 in. Manifold Hose Connection</strong> — Standard sizing for broad compatibility with AC manifold gauge sets</li> <li> <strong>CE Certified</strong> — Meets applicable safety and quality standards</li> </ul> <h3>Specifications</h3> <table> <tbody> <tr> <td><strong>Material</strong></td> <td>Brass</td> </tr> <tr> <td><strong>Refrigerant Compatibility</strong></td> <td>R1234yf</td> </tr> <tr> <td><strong>Connector Angle</strong></td> <td>90°</td> </tr> <tr> <td><strong>Manifold Hose Connection</strong></td> <td>1/4 in. (both adapters)</td> </tr> <tr> <td><strong>Low Pressure Coupler</strong></td> <td>Blue</td> </tr> <tr> <td><strong>High Pressure Coupler</strong></td> <td>Red</td> </tr> <tr> <td><strong>Product Size</strong></td> <td>Approx. 3 × 5.5 × 6.5 cm / 1.2 × 2.2 × 2.6 in.</td> </tr> <tr> <td><strong>Weight</strong></td> <td>Approx. 430 g / 15.2 oz</td> </tr> <tr> <td><strong>Certification</strong></td> <td>CE</td> </tr> </tbody> </table> <h3>What's in the Box</h3> <ul> <li>1 × Blue Low Pressure Quick Coupler</li> <li>1 × Red High Pressure Quick Coupler</li> </ul> <p><em>Note: Both a new-type and an old-type version of this product exist. The specific version shipped may vary — please keep this in mind before ordering.</em></p> <h3>You May Also Like</h3> <ul> <li><a href="/products/hex-nut-bolt-extractor-tool-kit-10-piece">10-Pc Hex Nut &amp; Bolt Extractor Kit 9–19mm | HIP Tools</a></li> <li><a href="/products/1-2-inch-8-piece-hex-short-socket-set-vanadium-steel">1/2" Drive 8-Piece Hex Short Socket Set – Vanadium Steel</a></li> </ul> <p>Learn more: <a href="https://www.fueleconomy.gov/feg/maintain.jsp" target="_blank" rel="noopener">FuelEconomy.gov on vehicle maintenance</a></p> <h3>Frequently Asked Questions</h3> <h4>Q: Are these R1234yf quick couplers compatible with standard manifold gauge sets?</h4> <p>A: Yes. Both the blue low-pressure and red high-pressure quick couplers feature a standard 1/4 in. manifold hose connection, making them compatible with most common AC manifold gauge sets used for R1234yf refrigerant systems.</p> <h4>Q: What is the benefit of brass construction for refrigerant adapters?</h4> <p>A: Brass is an excellent material for refrigerant adapters because it resists corrosion, handles temperature fluctuations