AirSept 72921 A/C Security Caps 30-Piece Set
Thirty-piece set of plastic click-lock security caps for R-134a automotive A/C systems, including ten high-side and ten low-side caps
- 30-piece set covers 10 high-side and 10 low-side service ports
- Click-lock design secures caps on R-134a A/C fittings
- Plastic construction resists corrosion and vibration damage
- 1 3/32 in outside diameter matches standard automotive A/C valves
- New condition ensures clean threads and reliable seal
30-Piece A/C Security Cap Set
The AirSept 72921 kit supplies thirty plastic caps designed for R-134a automotive air-conditioning systems. Ten caps fit high-side service ports and ten fit low-side ports, with the remaining pieces providing additional coverage. Each cap uses a click-lock mechanism that secures without tools. The set is new and ready for immediate workshop use.
For R-134a Service Work
Technicians servicing R-134a systems can seal both service-port sizes with one kit, reducing the chance of refrigerant loss and contamination. Shops that work exclusively on newer refrigerant types or that require metal caps will not find a match here. The plastic construction suits standard service intervals but is not intended for permanent high-pressure sealing.
Click-Lock Tool-Free Fit
The defining specification is the click-lock design that installs and removes by hand, eliminating the need for a separate cap wrench. Outside diameter measures 1 3/32 inches across all pieces, ensuring a consistent fit on SAE-standard R-134a ports. This single feature determines whether the kit matches the technician's workflow.
How it compares
Measured against everything we stock in Radiator Treatments & Test Tools, at today’s prices. Recalculated every night.
- Price $34.99
- Cheaper than about 62% of the 9 comparable items (median $46.99).
Specifications
| Product | |
|---|---|
| Brand name | AIRSEPT |
Questions about this item
What A/C system refrigerant must my vehicle use for these caps to fit?
These caps are designed for R-134A automotive A/C systems, matching the service ports on that refrigerant type.
Will the 1 3/32 in outside diameter caps thread onto the original service ports on my older R-134A vehicle?
Yes, the caps are made for standard R-134A service ports, so they fit the existing high-side and low-side fittings on older systems.
How can I confirm the click-lock mechanism has engaged properly after I install a cap?
Press the cap onto the port until you feel and hear a distinct click; the cap should then resist gentle tugging without turning.
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