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Your cart is empty. 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.
khoren
Reviewed in the United States on April 24, 2025
You get what you pay for quality it great
Aray
Reviewed in the United States on July 27, 2024
Well made solid connections
Joe Ivino
Reviewed in the United States on May 9, 2023
Works like it should, No issues.
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