.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 — backed by Mastercool’s U.S.-based customer support.
.?? 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.
.?? 2 oz Refillable Capacity – Allows precise control over oil or dye amounts with clear measurement scales in ounces and milliliters.
.?? Heavy-Duty Anodized Aluminum Body – Built for shop use with rugged black anodized finish and laser-etched dye measurement markings.
.?? Smooth-Twist Handle Control – Simple and consistent twist-to-inject handle design ensures fast, repeatable operation with minimal effort.
.?? High-Quality Barrier Hose – Durable blue nylon hose is J2888, EPA, SAE & UL compliant, offering long-lasting safety and flexibility.
.?? Premium R1234yf Coupler Included – Features extended disconnect sleeve for secure fit and meets SAE J639 and J2888 performance standards.
.?? 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.

Mastercool 53123-YF Refillable Oil and Dye Injector for R1234yf Systems – 2 oz Capacity – Anodized Aluminum Body – Smooth-Twist Handle – SAE J2888 & EPA Compliant