4379-RD575240
A/C Service Valve Cap
Mack

This specialized valve cap plays a critical role in maintaining the integrity of the air conditioning system. It seals the service port to prevent contamination, moisture ingress, and refrigerant loss, which are vital for optimal cooling performance. Proper sealing with this cap helps extend the lifespan of the A/C components and ensures consistent climate control within the vehicle cab. Its robust construction resists corrosion and damage from environmental exposure, making it a reliable choice for ongoing maintenance. Ensuring the A/C system remains sealed and functional is essential for driver comfort and vehicle efficiency. Source One Parts Center offers quality fittings designed to meet industry standards, supporting your vehicle's climate control system effectively.