Charging Accessories

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 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...

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...

Mastercool low-side female manual coupler. Blue color coded manual coupler that connects easily to R-134A service ports. It is made of an all metal construction for extra durability and the patented, spring loaded depressor prevents damage of service...

High side red male manual coupler connects easily to R134A service ports. Spring loaded depressor will not damage service valves. Can be removed from service ports regardless of knob position without losing refrigerant.

Mastercool High-Side Manual red quick connect service coupler easily connects to R-134A service ports. It is made of an all metal construction for extra durability and the patented, spring loaded depressor prevents damage of service valves. The coupler...

Mastercool 134a Oil and UV dye injector. Add refrigerant oil or large amounts of UV leak detection dye. Includes a low side coupler. 1/2" ACME-M x 1/2" ACME-F (R134a). Instruction pdf.