Four Seasons 26775 Cap & Valve Air Conditioning System Seal Kit

Fixed my A/c leaks. Easy install.

Great Product, Works Perfect for our needs and easy to use.

This kit stopped my leaking high pressure side service port valve (large, aluminum, male coupler in photo; used on most GM high pressure sides). And the Schrader valves (3 smaller contraptions) stopped my low side service port leak... The low side service port Schrader valve can be removed and replaced with a R134A ‘zero pressure loss’ Schrader valve remover/installer with out the “extra” steps the high side requires... Unfortunately, if your high side port is leaking you must recover all the R134A refrigerant before you attempt to replace the high side. There is NOT a replaceable part in the large aluminum service port. When you remove the large service port, you need a high side service port, octagon socket (Some Fords have similar service port coupler, on the low side and there is a special socket for it as well) to remove it. Sure there are ‘other’ DIY methods that might work, but I wouldn’t install a new one using other DIY methods. And no, an SAE or Metric socket won’t fit. So now you have removed the high side service port coupling, lubricated the seal with manufacture specified AC system oil and installed the new coupler, the system was exposed to atmospheric conditions (air and humidity are bad!) You must replace the receiver/ dryer (contains non-replaceable desiccant that removes any residual moisture AFTER proper evacuation) and acts as a holding area for your manufactures specified AC system oil (yes your going to need manufactures AC specified oil too.) How much and what kind depends on your manufactures specification for a receiver/dryer replacement. Next, you must evacuate the system (using an HVAC vacuum pump or an R134A compatible recovery, evacuation and recharging system) to remove air and moisture. While your at it, replace those plastic service port caps! While they keep debris out of the ports, they play a role in sealing those pesky Schrader valves.Note: You can’t fix a leaky Schrader valve with a new cap! You can’t seal a new Schrader valve or service coupler with an old cap! They work hand in hand.

Good fit and quality. Easy install

Fast shipping and seems to be good quality. Fit as it should.

Fit fine and no issues installing on my truck. Don't forget to pick up a valve core tool for the low pressure side, as most of the regular ones for tire valves won't get the job done.

Works great it was for my enclave

Fixed the leak in my 2003 Hummer H2 A/C system. Took about two minutes. Great product. Easy to install.