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20 Best Mastercool 81490 R134A Tool of 2023 – Romance University
After hours researching and comparing all models on the market, Romance University finds out the Best Mastercool 81490 R134A Tool of 2023. Check our ranking below.
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- ✔️ REPLACE R134A VALVE CORES WITHOUT EVACUATING THE SYSTEM – Built-in shutoff valve allows technicians to remove and replace valve cores while the system remains fully pressurized.
- ✔️ WORKS WITH MOST STANDARD R134A VALVE CORES – Designed for vehicles that use 13mm (low side) and 16mm (high side) service ports with conventional R134a cores.
- ✔️ IMPORTANT FITMENT NOTICE – This tool does not fit all R134a vehicles. Some Ford, GM, and Chrysler models use oversized or non-standard valve cores.
- ✔️ FOR BROADER COMPATIBILITY – See Mastercool kits: 58490 (Standard, GM, JRA, Eaton), 58560 (Eaton-style), or 58531 (Standard + JRA cores).
- ✔️ COMPACT AND EASY TO USE – Simple one-piece design fits in your pocket or tool pouch, ideal for mobile or in-shop use.
- ✔️ Compact Tool for R12 and R134a Valve Cores – Designed for use when the system is not pressurized.
- ✔️ Covers Standard, JRA, and Eaton Large Bore Cores – Dual-ended shafts provide maximum compatibility in one tool.
- ✔️ Simple, Fast Valve Core Service – Ideal for use during system evacuation, recovery, or repair.
- ✔️ Durable Construction – Hardened steel shafts and solid steel body ensure long-lasting use.
- ✔️ Easy to Store and Carry – Pocket-sized tool that fits easily in any kit or toolbox.
- ✔️ Injects Refrigerant Oil or UV Dye – Designed to deliver oil or high volumes of UV leak detection dye into R134a automotive A/C systems.
- ✔️ Dual Injection Methods – Add fluid using vacuum suction after system evacuation or pressurized refrigerant during recharge.
- ✔️ Heavy-Duty 2 oz Metal Canister – Durable all-metal construction built to withstand repeated use in demanding service environments.
- ✔️ Precision Needle Valve Control – Built-in valve provides smooth, controlled delivery when used between your manifold gauge set and A/C hose.
- ✔️ R134a System Compatibility – Equipped with 1/2” ACME male x female fittings for seamless integration with standard R134a service tools.
- Easy Valve Core Replacement: Orion Motor Tech's AC valve core removal tool kit effortlessly removes and installs valve cores without any refrigerant loss. This comprehensive ac valve core kit includes high & low-pressure valve removers, R1234yf couplers, R134a & R22 cores, along with O-rings
- Wide Compatibility: This A/C valve core removal tool is designed to accommodate a variety of valve cores, supporting standard, JRA, and Schrader valves within R134a, R1234yf, and R22 automotive AC systems
- Built-in Ball Valve: With a built-in ball valve, our AC Schrader valve removal tool allows you to control the flow of refrigerant during the removal or installation of valve cores using the handy lever
- Leak-Free Operation: The 5 and 6-ball snap of the ac schrader valve removal tool locks securely latch onto R1234yf coolant ports, creating a complete hermetic seal with built-in O-rings to prevent any refrigerant leaks
- Sturdy & Easy Organization: Constructed from robust brass and aluminum alloy, our Schrader valve remover ensures superior durability and corrosion resistance. The provided blow-molded case makes transport and organization easier than ever
- ✅ 100% U.S. Designed, Assembled & Tested – Professional-grade manifold gauge set, engineered for R134a and R12 refrigerants, making it the perfect tool for automotive A/C technicians who demand reliable performance.
- ✅ Durable Aluminum Block Construction – Crafted with a rugged extruded aluminum body, featuring free-floating piston valves that reduce O-ring wear, ensuring exceptional durability and an extended lifespan.
- ✅ Precision 2-1/2" Recalibratable Gauges – Silicone-dampened gauges provide smooth and accurate pressure readings, minimizing needle vibration for precise system monitoring.
- ✅ Premium Manual Couplers – Equipped with high-quality manual couplers, delivering superior control and durability over standard R134a couplers, ensuring a secure fit and reliable performance in heavy-duty applications.
- ✅ Complete Hose Set with 3-in-1 Side Mount Can Tap Valve – Includes two sets of 60” SAE-approved nylon barrier hoses for R134a and R12 refrigerants, along with a 3-in-1 side mount can tap valve for R134a refrigerant and oil charge cans.
Last update on 2025-07-02 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: Why choose mastercool’s R134a valve core remover/installer?
A: Mastercool’s R134a valve core remover/installer has a built-in ball valve to retain charge and allow access to A/C system. Excellent for replacing valve cores without discharging the system, speeding recovery and recharging large systems.
Q: Will the mastercool 5831 work with a JRA valve?
A: Come to find out, my low-side valve is a JRA valve (which I think is also called a high-flow Schrader valve) which is too big to fit through this tool. I read other reviews that say the Mastercool 5831 model does work with JRA valves (it’s $30 more) so I ordered that (thank you Amazon same-day delivery!) and it worked like a champ.
Q: Why choose mastercool?
A: Excellent for replacing valve cores without discharging the system, speeding recovery and recharging large systems.Built-in ball valve retains charge and allows access to A/C system For over 35 years Mastercool has been supplying professional quality air conditioning service tools and equipment.