--- product_id: 11113976 title: "Yellow Jacket 49138 3-1/8\" Blue Compound, 30\", 0-350 psi, R-22/404A/410A Gauge Degrees F" brand: "yellow jacket" price: "$98.62" currency: USD in_stock: true reviews_count: 10 category: "Yellow Jacket" url: https://www.desertcart.us/products/11113976-yellow-jacket-49138-3-1-8-blue-compound-30-0 store_origin: US region: United States of America --- # 3-1/8" large gauge for precise readings Color-coded blue for easy refrigerant ID 1% calibration accuracy for trusted data Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F **Brand:** yellow jacket **Price:** $98.62 **Availability:** ✅ In Stock ## Summary > 🔧 Stay ahead in HVAC with precision that speaks volumes! ## Quick Answers - **What is this?** Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F by yellow jacket - **How much does it cost?** $98.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/11113976-yellow-jacket-49138-3-1-8-blue-compound-30-0) ## Best For - yellow jacket enthusiasts ## Why This Product - Trusted yellow jacket brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Durable brass gauge movement and copper alloy bourdon tube deliver long-lasting reliability under pressure. - • **Effortless Readability:** Large 3-1/8" dial with high-visibility color-coded scales means no more squinting on the job. - • **Flutter-Less Technology:** Brass surge protector minimizes needle pulsation for stable, consistent readings. - • **Precision You Can Trust:** Calibrated to 1% accuracy ensures your HVAC diagnostics are spot-on every time. - • **Plug & Play Compatibility:** Standard 1/8" NPT male connection fits seamlessly into your existing toolkit. ## Overview The Yellow Jacket 49138 is a rugged, blue compound gauge designed for R-22/404A/410A refrigerants, featuring a large 3-1/8" dial, 1% calibration accuracy, and durable brass and copper alloy construction. Its flutter-less technology and color-coded scales make it an essential tool for professional HVAC technicians seeking reliable, easy-to-read pressure and temperature measurements. ## Description Large 3-1/8 inch gauges are housed in a red or blue steel case with front recalibrates screw. High visibility colored temperature scales are easy to read through the full view polycarbonate crystal. Flutter less technology with brass surge protector to minimize needle pulsation, brass gauge movement. Copper alloy bourdon tube, color-coded refrigerant types. ## Features - Color coded blue for compound - Calibrated to 1% accuracy - 1/8" NPT male connection - Item Package Dimension: 2.0" L x 2.0" W x 2.0" H ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00159TFU6 | | Best Sellers Rank | #86,893 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #170 in Industrial Pressure Gauges | | Brand | Yellow Jacket | | Brand Name | Yellow Jacket | | Customer Reviews | 4.7 out of 5 stars 863 Reviews | | Global Trade Identification Number | 00686800491387 | | Item Dimensions | 6.2 x 6.25 x 4.5 inches | | Item dimensions L x W x H | 6.2 x 6.25 x 4.5 inches | | Manufacturer | Fotronic Corporation | | Material | Brass | | Material Type | Brass | | Model | 49138 | | Number of Items | 1 | | Part Number | 49138 | | Thread Style | Npt | | Thread Type | Npt | | UPC | 686800491387 | | Unit Count | 1 Count | ## Product Details - **Brand:** Yellow Jacket - **Item dimensions L x W x H:** 6 x 6 x 4 inches - **Material:** Brass - **Thread Type:** Npt - **UPC:** 686800491387 ## Images ![Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F - Image 1](https://m.media-amazon.com/images/I/91A2tu61BNL.jpg) ![Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F - Image 2](https://m.media-amazon.com/images/I/71fjIgpMMAL.jpg) ## Questions & Answers **Q: Is the full scale 500 psi (as pictured) or 350 psi (as in description)?** A: *30", 0-350 psi - retard protection to 500 psi **Q: Will this gauge fit on my 42006 series 41 manifold? I got the wrong gauges (r22, 134a, and 404a) and I need the 410a.** A: I see no reason why it shouldn't fit...threads should be the same...but you will need to be able to hook it up to your AC system and those end connectors may be your problem...make sure you have the proper end fittings that you need for your system. I have multiple gauges for mine that I can interchange. **Q: Hi i need a low side and high side for: R134A,507 and 404?** A: You need a gauge, gauge and hoses? **Q: Will this work for R134?** A: I'm a 20yr tech. It will work for any refrigerant really... it just doesn't give the saturation temp of R134a. But it will give pressures which is the main purpose of gauges. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by V***L on May 24, 2020* ### ⭐⭐⭐⭐⭐ Review *by C***E on April 15, 2026* ### ⭐⭐⭐⭐⭐ Review *by D***A on January 31, 2026* ## Frequently Bought Together - Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F - Yellow Jacket 49137 3-1/8" Red Pressure, 0-800 psi, R-22/404A/410A Gauge Degrees F - Yellow Jacket 19110 Ritchie Quick Coupler --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/11113976-yellow-jacket-49138-3-1-8-blue-compound-30-0](https://www.desertcart.us/products/11113976-yellow-jacket-49138-3-1-8-blue-compound-30-0) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-07*