Mastercool

72" Yellow R134a Hose without Shut-Off Valve Mastercool uses only Grade 5 Hose for high pressure applications. Knurled brass nuts make finger tightening easy. Crimped with 8 segment dies for secure...

Low Side Manual R134a Safety Lock Coupler, 1/4" FL-M x 16MM Once coupler is connected to system, safety-lock sleeve slides into place, guaranteeing that the coupler can’t be taken off without...

Low Side Knob- Blue Low Side Knob- Blue 85211

Low Side 2-1/2” Gauge for R134a and R12 Mastercool offers one of the most extensive lines of high quality replacement gauges. Our wide variety of gauge scales are available in different sizes and...

High Side Knob- Red High Side Knob- Red 85212

Flush Machine for Automotive Systems Designed to flush automotive systems with a capaity of over 10 liters of flush. Commonly used for removal of all solids and residues caused by breakage of...

Replaceable Concentrated Dye , 1 oz. 10 Applications 53810

1/2" Acme-M x 1/8" MPT Adapter 1/2 Acme-M x 1/8 MPT Adapter 80296

Replacement Filter Dryer for 69360 and 69100 Replacement Filter Dryer for 69360 and 69101 69500-DR

18V CORDLESS VAC PUMP W/B 18V CORDLESS VAC PUMP W/B 90058-AUT

R134a Recharge Kit Charge A/C systems using R134a cans with 1/2” ACME fitting 85525

3 Pc. Straight and Manual Shut-off Valve Set Mastercool manufactures a complete line of shut-off valves for containment of refrigerant. EPA requires shut-off valves within 12 inches of the charging...