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A/C QuickCaps are leakproof universal A/C service port caps that replace traditional plastic caps. While plastic caps act only as dust covers, A/C QuickCaps use a patented design with blocking ball bearings and durable O-rings to form a pressure-sealing barrier, helping prevent refrigerant leaks from your A/C system.

Traditional plastic caps were never designed to hold refrigerant pressure and are prone to leaking. A/C QuickCaps provide a real seal at the service ports, minimizing refrigerant loss, protecting your A/C system from damage, and reducing environmental harm.

Yes. A/C QuickCaps are designed to work with Schrader valves. Although our caps have been tested in lab settings without Schrader valves, this is not recommended for use in the field. QuickCaps are meant to add an extra layer of protection—capturing refrigerant that may leak past the Schrader valve, which traditional plastic caps cannot do.

Yes! A/C QuickCaps are universal for vehicles and equipment that use either R-134a or R-1234yf refrigerant. Each pack includes both high and low-side caps for the chosen refrigerant type, making them a simple, all-in-one solution that replaces mismatched, leaky caps across various vehicles and systems.

• Installation is quick and tool-free:
  • Remove the old cap.
  • Clean the service port area.
  • Pull up the outer ring of the Quick Cap.
  • Push the cap down onto the port and release the ring. You’ll hear a click — that’s your seal engaging.
• To remove, pull up on the outer ring and lift off the cap. It installs just like gauge fittings or refrigerant can connectors.

Absolutely. Traditional caps often allow up to 5–10% refrigerant loss per year, especially as cars today carry less refrigerant. AC Quick Caps significantly reduce leakage by providing a second, airtight seal at the service port—even if your Schrader valve begins to fail.

Not necessarily. QuickCaps can seal over leaking Schrader valves. Simply remove your gauges and install the caps. Their patented leakproof design will contain the refrigerant, saving you from expensive repairs or recharging services down the line.

Look under the hood—most vehicles have a refrigerant label indicating the type and quantity. If the label is missing, call your dealership with the vehicle VIN. In general:

• Vehicles made between 1994–2016 likely use R-134a.
• Vehicles made after 2016 often use R-1234yf, but always confirm before ordering.

If you notice oily residue, bubbles around the Schrader valves, or reduced cooling, it’s likely your current caps (and possibly your valves) are leaking. When servicing the system, it’s smart to replace both the caps and Schrader valves. QuickCaps help lock in refrigerant after service to prevent future leaks and costly repairs.

Yes. QuickCaps are engineered to perform under the high pressure and temperature extremes typical in modern A/C systems. However, be cautious when removing caps from a hot vehicle—especially the high-side cap, which can become very hot during operation.

Yes. By preventing refrigerant leaks, QuickCaps help reduce harmful emissions and protect the ozone layer. They're a simple upgrade that helps the planet—while also saving you money on refrigerant and repair costs.

A/C QuickCaps are available right here on our website for the best prices and latest promotions. We’re also partnering with parts distributors nationwide, so check back often to find a local supplier near you.