--- product_id: 132511514 title: "Mastercool 53123-YF Refillable R1234yf Oil Injector" brand: "mastercool" price: "€ 254.92" currency: EUR in_stock: true reviews_count: 5 category: "Mastercool" url: https://www.desertcart.hr/products/132511514-mastercool-53123-yf-refillable-r1234yf-oil-injector store_origin: HR region: Croatia --- # Meets global standards Precise dye scales Heavy-duty aluminum Mastercool 53123-YF Refillable R1234yf Oil Injector **Brand:** mastercool **Price:** € 254.92 **Availability:** βœ… In Stock ## Summary > πŸ” Inject with Confidence! ## Quick Answers - **What is this?** Mastercool 53123-YF Refillable R1234yf Oil Injector by mastercool - **How much does it cost?** € 254.92 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/132511514-mastercool-53123-yf-refillable-r1234yf-oil-injector) ## 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 - β€’ **Compact Design:** Lightweight and portable at just 1 pound, perfect for on-the-go professionals. - β€’ **Easy Operation:** Twist handle design allows for quick and effortless use. - β€’ **Standard Compliance:** Meets EPA, SAE, and UL standards for peace of mind. - β€’ **Precision Engineering:** Crafted from heavy-duty anodized aluminum for durability. - β€’ **Versatile Compatibility:** R1234yf low side coupler with extended disconnect sleeve. ## Overview The Mastercool 53123-YF Refillable R1234yf Oil/Dye Injector is a robust and efficient tool designed for professionals. Made from heavy-duty anodized aluminum, it features precise dye scales and a user-friendly twist handle. This injector meets stringent industry standards, ensuring reliability and performance in every application. ## Description Mastercool 53123-YF Refillable Oil and Dye Injector for R1234yf Systems The Mastercool 53123-YF is a professional-grade refillable injector designed to deliver precise amounts of oil or UV dye into R1234yf automotive A/C systems. Built for technicians who demand both accuracy and durability, this tool ensures quick and clean injections with minimal effort. Key Features: - Dual-Purpose Design: Ideal for injecting refrigerant oil or UV leak detection dye - 2 oz Capacity: Supports accurate, controlled injections with etched measurement scales in 1/10 oz, 1/4 oz, and milliliters - Anodized Aluminum Construction: Durable black anodized body built for daily use - Smooth-Twist Handle: Provides consistent delivery and excellent tactile control - Premium Barrier Hose: High-quality blue nylon hose meets J2888, EPA, SAE, and UL standards - R1234yf Low Side Coupler: Extended disconnect sleeve ensures secure fit; SAE J639 and J2888 compliant Quick and Easy Operation: 1. Connect the injector to the low side service port 2. Twist the handle to deliver the desired amount of oil or dye 3. Disconnect and clean as needed Built for professional A/C technicians, the 53123-YF combines function, durability, and speed β€” backed by Mastercool’s U.S.-based customer support. Review: Great - Good quality. Seems to be the same as the Blue Point version off the Snap on truck. The end does leak oil a bit when stored so best to store it vertically if storing with oil inside. Review: Quality - You get what you pay for quality it great ## Features - βœ”οΈ Designed for R1234yf Systems – Specifically built for quick and accurate oil or dye injection into low side service ports of modern R1234yf A/C systems. - βœ”οΈ 2 oz Refillable Capacity – Allows precise control over oil or dye amounts with clear measurement scales in ounces and milliliters. - βœ”οΈ Heavy-Duty Anodized Aluminum Body – Built for shop use with rugged black anodized finish and laser-etched dye measurement markings. - βœ”οΈ Smooth-Twist Handle Control – Simple and consistent twist-to-inject handle design ensures fast, repeatable operation with minimal effort. - βœ”οΈ High-Quality Barrier Hose – Durable blue nylon hose is J2888, EPA, SAE & UL compliant, offering long-lasting safety and flexibility. - βœ”οΈ Premium R1234yf Coupler Included – Features extended disconnect sleeve for secure fit and meets SAE J639 and J2888 performance standards. - βœ”οΈ Built for Professionals – Ideal for A/C technicians who demand quality, accuracy, and speed in a compact, easy-to-use tool. Supported by Mastercool’s U.S.-based service team. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N48UCFJ | | Best Sellers Rank | #563,015 in Automotive ( See Top 100 in Automotive ) #99 in Air Conditioning Leak Detection Tools | | Brand | Mastercool | | Brand Name | Mastercool | | Connector Type | R1234yf Coupler | | Customer Reviews | 4.4 out of 5 stars 19 Reviews | | Exterior Finish | Heavy duty, anodized aluminum | | Global Trade Identification Number | 00700376115741 | | Included Components | Heavy duty, anodized aluminum, 2 oz container with dye scales represented in 1/10 ounce, 1/4 ounce and milliliters, Nylon barrier blue hose meets J2888, EPA, SAE and UL standards, R1234yf low side coupler with extended disconnect sleeve and meets SAEJ639 and J2888 | | Inlet Connection Size | 0.25 inches | | Inlet Connection Type | SAE | | Item Dimensions | 12 x 2 x 6 inches | | Item Type Name | Refillable R1234yf Oil/Dye Injector | | Item Weight | 16 ounces | | Item dimensions L x W x H | 12 x 2 x 6 inches | | Manufacturer | MASTERCOOL | | Manufacturer Part Number | 53123-YF | | Manufacturer Warranty Description | 1 Year Manufacturer, 1 Year Manufacturer parts and labor | | Material | Heavy duty, anodized aluminum | | Material Type | Heavy duty, anodized aluminum | | Model Number | 53123-YF | | Number of Items | 1 | | Number of Pieces | 1 | | Number of Ports | 1 | | Outlet Connection Size | 0.25 inches | | Outlet Connection Type | SAE | | Size | 2 x 12 x 6 inches | | Specification Met | Yes | | UPC | 700376115741 | | Unit Count | 1 Count | | Valve Type | R1234yf Low Side Coupler | ## Product Details - **Material:** Heavy duty, anodized aluminum - **Brand:** Mastercool - **Item dimensions L x W x H:** 12 x 2 x 6 inches - **Exterior Finish:** Heavy duty, anodized aluminum - **Outlet Connection Type:** SAE - **Number of Ports:** 1 - **Outlet Connection Size:** 0.25 Inches - **Specification Met:** Yes - **Valve Type:** R1234yf Low Side Coupler - **Global Trade Identification Number:** 00700376115741 ## Images ![Mastercool 53123-YF Refillable R1234yf Oil Injector - Image 1](https://m.media-amazon.com/images/I/51HCRCctdOL.jpg) ![Mastercool 53123-YF Refillable R1234yf Oil Injector - Image 2](https://m.media-amazon.com/images/I/811+5tSbk+L.jpg) ![Mastercool 53123-YF Refillable R1234yf Oil Injector - Image 3](https://m.media-amazon.com/images/I/81-MECovB9L.jpg) ![Mastercool 53123-YF Refillable R1234yf Oil Injector - Image 4](https://m.media-amazon.com/images/I/91e68CHArKL.jpg) ![Mastercool 53123-YF Refillable R1234yf Oil Injector - Image 5](https://m.media-amazon.com/images/I/81MugLYIWCL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great *by N***I on May 13, 2026* Good quality. Seems to be the same as the Blue Point version off the Snap on truck. The end does leak oil a bit when stored so best to store it vertically if storing with oil inside. ### ⭐⭐⭐⭐⭐ Quality *by K***N on April 24, 2025* You get what you pay for quality it great ### ⭐⭐⭐⭐⭐ Worked perfectly *by A***Y on July 27, 2024* Well made solid connections ## Frequently Bought Together - Mastercool 53123-YF Refillable R1234yf Oil/Dye Injector - Robinair 17499 Heavy-Duty Vinyl Dust Cover for A/C RRR Machines, Black --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/132511514-mastercool-53123-yf-refillable-r1234yf-oil-injector](https://www.desertcart.hr/products/132511514-mastercool-53123-yf-refillable-r1234yf-oil-injector) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-01*