GallopMax AC Oil Dye Injector Kit R1234YF & R134A — 2 oz Aluminum Injector, Dual Low-Side Couplers

GallopMaxR1234YF & R134A AC Oil Dye Injector Kit is a professional-grade 2 oz injector set that lets you add oil, fluorescent dye, or additives to both R134A and R1234YF air-conditioning systems quickly and accurately.

This injector kit combines a sturdy aluminum injector body, two low-side quick couplers, measurement tools and oil checkers so technicians and DIYers can service modern vehicle A/C lines without juggling multiple tools. The kit's clear engraved scale, snap-on couplers for each refrigerant type, and twist-plunger design simplify oil delivery after compressor service, system flushes, or when adding leak-detecting dye.

How does the injector actually deliver oil into an A/C system?

The GallopMax injector forces liquid into the low-pressure side by turning the plunger so the oil is pushed through a one-way valve and the attached quick coupler. Start the vehicle A/C at maximum cooling to circulate refrigerant, attach the correct coupler, then screw the plunger to meter the oil into the system.

• Aluminum injector body with a twist-to-inject plunger for positive pressure delivery
• Low-side check valve prevents backflow during injection
• Clear laser-engraved scale from 1/4 oz (7.5 ml) to 2 oz (60 ml) for accurate dosing

Can I use this kit on both R134A and R1234YF systems?

Yes — the kit includes separate snap-on low-side couplers made specifically for R134A and R1234YF, so you don't need a second injector for different refrigerants. Each coupler fits the corresponding service port and has an integral valve to maintain system integrity while connecting.

• R134A low-side quick coupler with integrated valve for older systems
• R1234YF low-side quick coupler designed for modern, lower-GWP systems
• Color-neutral components to avoid refrigerant cross-contamination

What accuracy and capacity can I expect when measuring and injecting oil?

The injector offers a 1/4 oz to 2 oz (7.5–60 ml) capacity with a laser-engraved scale that remains legible during repeated use. Included measuring cup and oil checkers help you confirm current system oil levels and control added volumes to match manufacturer recommendations.

• 2 oz (60 ml) maximum capacity for most common oil top-ups and dye injections
• Laser-engraved volume markings for repeatable dosing
• Two oil checkers and a 2 oz measuring cup for system verification and prep

What components are included and how do they speed up a service job?

The kit bundles every accessory needed for routine oil or dye injections, reducing trips to the parts store and eliminating tool swaps between refrigerant types. With couplers, checkers, and a clear instruction sheet, technicians can complete oil additions faster and with fewer errors.

• 1× professional-grade 2 oz aluminum injector body with plunger
• 1× R1234YF low-side quick coupler with valve and 1× R134A low-side quick coupler with valve
• 2× oil checkers, 1× 2 oz measuring cup, and 1× instruction manual

Who is this for? The GallopMax R1234YF & R134A AC Oil Dye Injector Kit is aimed at automotive technicians, HVAC professionals, and knowledgeable DIYers who work on vehicle A/C systems that use R134A or R1234YF refrigerants. If you need a reliable, accurate way to add compressor oil, fluorescent dye, or system additives while maintaining correct dosing and avoiding cross-contamination, this kit offers a compact, all-in-one solution that speeds service and reduces mistakes.