GPD 5811356 A/C Service Port Cap High/Low Side

The GPD 5811356 is a replacement A/C service port cap designed for use on both high-side and low-side refrigerant service ports in automotive air conditioning systems. These small but critical components protect the Schrader valve inside each service port from dirt, moisture, and debris that can compromise refrigerant integrity and system performance.

Key Features:

• Fits standard high-side and low-side A/C service port fittings
• Protects Schrader valves from contamination, moisture, and debris
• Helps prevent refrigerant leakage at service port locations
• Durable construction for long-lasting protection
• Direct replacement for OEM-style service port caps

Replacing missing or damaged A/C service port caps is a simple but important maintenance step. Without a properly seated cap, the Schrader valve can accumulate dirt and corrosion, leading to slow refrigerant leaks and reduced A/C cooling performance over time. The GPD 5811356 is an easy, low-cost way to maintain a sealed and properly functioning air conditioning system.