--- product_id: 36080257 title: "Mastercool 82834-E R134a High Side 1/4 in FL-M Manual Quick Coupler" brand: "mastercool" price: "€ 71.69" currency: EUR in_stock: true reviews_count: 9 category: "Mastercool" url: https://www.desertcart.gr/products/36080257-mastercool-82834-e-r134a-high-side-1-4-in-fl store_origin: GR region: Greece --- # O-ring leak proof Aluminum build Patented design Mastercool 82834-E R134a High Side 1/4 in FL-M Manual Quick Coupler **Brand:** mastercool **Price:** € 71.69 **Availability:** ✅ In Stock ## Summary > 🔧 Elevate Your Tool Game with Mastercool's Quick Coupler! ## Quick Answers - **What is this?** Mastercool 82834-E R134a High Side 1/4 in FL-M Manual Quick Coupler by mastercool - **How much does it cost?** € 71.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/36080257-mastercool-82834-e-r134a-high-side-1-4-in-fl) ## Best For - mastercool enthusiasts ## Why This Product - Trusted mastercool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Leak Protection:** Innovative O-ring design ensures a secure, leak-free connection. - • **Vibrant Visibility:** Striking red color makes it easy to spot in any toolbox. - • **Effortless Coupling:** Patented quick coupler design for seamless operation. - • **Unmatched Durability:** Crafted from high-grade aluminum for long-lasting performance. - • **Compact & Lightweight:** Weighing only 4 ounces, it's easy to handle and store. ## Overview The Mastercool 82834-E R134a High-Side Manual Quick Coupler is engineered for professionals seeking reliability and efficiency. With its robust aluminum construction and patented design, this coupler ensures a secure, leak-proof connection, making it an essential tool for any HVAC technician or automotive enthusiast. ## Description High side R134A Manual coupler. Review: Finally one that works - I think I've tried 4 different discharge line (high pressure) couplers for my gauge set. They all had the same issue of the coupler's center pin not extending down far enough when turned fully "open" to fully depress the schrader valve in the discharge line to give me an accurate reading on the high pressure gauge. With each coupler (including the Yellow Jacket one) I had to grab (with a glove on) the extremely hot coupler and line and squeeze them together to get an accurate high pressure reading. This coupler finally fits well enough to open the schrader valve all the way and give me an accurate reading. Review: Excellent coupler - I bought a set of these (both high and low) couplers to replace the cheap ones that came on my manifold gauges. The fit is perfect, and the knob allows for easily attaching and disconnecting with pressure in the system. Can't imagine there being a product out there, very highly recommend these. ## Features - Aluminum construction - Manual coupler - O ring leak protection - Patented design - Heavy duty construction ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000KFW8AU | | Best Sellers Rank | #133,685 in Automotive ( See Top 100 in Automotive ) #412 in Air Conditioning Line Repair Tools | | Brand | Mastercool | | Brand Name | Mastercool | | Color | Red | | Connector Type | Coupling | | Customer Reviews | 4.6 out of 5 stars 82 Reviews | | Exterior Finish | Aluminum | | Global Trade Identification Number | 00700376101997 | | Included Components | Item | | Item Dimensions | 4.9 x 3.6 x 2 inches | | Item Weight | 4 ounces | | Item dimensions L x W x H | 4.9 x 3.6 x 2 inches | | Manufacturer | Mastercool | | Manufacturer Part Number | 82834-E | | Manufacturer Warranty Description | 1 year | | Material | Aluminum | | Material Type | Aluminum | | Model Number | 82834-E | | Number of Packs | 1 | | Number of Pieces | 1 | | Size | 1/4 inch | | Thread Type | UNF | | UPC | 013317015056 700376101997 | | Unit Count | 1 Count | ## Images ![Mastercool 82834-E R134a High Side 1/4 in FL-M Manual Quick Coupler - Image 1](https://m.media-amazon.com/images/I/71oKj7wUbEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Finally one that works *by C***E on September 15, 2023* I think I've tried 4 different discharge line (high pressure) couplers for my gauge set. They all had the same issue of the coupler's center pin not extending down far enough when turned fully "open" to fully depress the schrader valve in the discharge line to give me an accurate reading on the high pressure gauge. With each coupler (including the Yellow Jacket one) I had to grab (with a glove on) the extremely hot coupler and line and squeeze them together to get an accurate high pressure reading. This coupler finally fits well enough to open the schrader valve all the way and give me an accurate reading. ### ⭐⭐⭐⭐⭐ Excellent coupler *by T***N on July 21, 2026* I bought a set of these (both high and low) couplers to replace the cheap ones that came on my manifold gauges. The fit is perfect, and the knob allows for easily attaching and disconnecting with pressure in the system. Can't imagine there being a product out there, very highly recommend these. ### ⭐⭐⭐⭐⭐ Works perfectly. Thanks. *by S***Y on July 11, 2024* A great quality product. Thank you. --- ## 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.gr/products/36080257-mastercool-82834-e-r134a-high-side-1-4-in-fl](https://www.desertcart.gr/products/36080257-mastercool-82834-e-r134a-high-side-1-4-in-fl) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-09-30*