This set of AC service caps includes one H (high pressure) cap and one L (low pressure) cap. Made of durable blue plastic with knurled outer surface for easy hand tightening.
They cover the refrigerant service ports to block dust, dirt and moisture, prevent accidental refrigerant leakage and valve core damage. Clear H/L marking helps technicians quickly distinguish high-side and low-side ports during AC maintenance and refrigerant charging. Universal fit for most passenger vehicles, trucks and machinery AC systems. Bulk supply and custom colors are available.
Features:
-Marked H (High) / L (Low) for easy identification
-Knurled surface for easy grip and installation
-Dustproof, moisture-proof and anti-leakage
-Durable plastic, not easy to crack
-Universal for auto air conditioning service ports
-Bulk wholesale & custom color available
Contact us for bulk pricing and MOQ of AC valve caps.
AC valve cap, air conditioning high low side cap, refrigerant port cap, auto AC charging cap
FAQ
Q: What do H and L mean on AC caps?
A: H stands for high-pressure service port, L stands for low-pressure service port of the vehicle air conditioning system.
