Ensure your vehicle's air conditioning system remains in top condition with these 2Pcs Blue Replacement Valve Caps. Designed for R134a AC systems, these leakproof caps fit securely on the high and low pressure charging ports, preventing refrigerant leaks and maintaining optimal cooling performance. Constructed from durable materials, these valve caps offer reliable protection and longevity. Keep your car's AC running smoothly and efficiently with this essential replacement part. Please note that proper installation by a qualified technician is recommended for optimal results.