Air Conditioning

This Mastercool charging module is an accessory that turns the ML98210 ACCU-CHARGE II into an Automatic Programmable Scale. Module allows the user to control the exact amount of refrigerant. Includes a short hose for tank connection, USB cord, & 1/4"...

Assorted HNBR rubber o-rings generally used in AC systems to gap the connection to create leak proof seals. Having the correct o-ring on hand saves time & money. 91339 AUTOMOTIVE R12 & R134a O-RING ASSORTMENT (270 PIECE HNBR) 7/32” x...

The MasterCool 91290 features a doubled-ended design for easy replacement of standard valves cores as well as GM R 12 large bore cores. Heavy duty and built to last.

Clutch Plate Installer by Mastercool

The Mastercool 89661-PRO is a professional grade manifold gauge set, featuring a professional extruded aluminum block and silicone-dampened gauges. This kit includes a 3-in-1 side-mount can tap valve tool. Gauges can be recalibrated Set of 3 R134a nylon...

Aluminum site glass block with 60" Hoses in a Plastic Box Uses Standard couplers designed to work in the tightest quarters Also can be used with existing R12 hoses and snaps easily to A/C service ports Includes 85530 Used on R-12, R-134a and 2oz. oil...

Screw on model for acme male can taps

Mastercool replacement hoses for your 134A manifold guage set. 72" red (ML84723), yellow 9ML84722) and blue (ML84721) hoses.

Extended disconnect protection sleeve Meets SAE J639 and J2888 codes

Extended disconnect protection sleeve Meets SAE J639 and J2888 codes

Look no further than the Mastercool 83272 for a durable manifold gauge set. Specially designed gauges generate smooth needle movement with anti-flutter technology Well marked temperature scales are easy to read Fast and easy calibration for accurate...

Patented blue male manual coupler, connects easily to R134a service ports. All metal construction for extra durability. Patented, spring loaded depressor will not damage service valves. Can be removed from service port regardless of knob position without...