Product Details: The Airsource 12V 4-Pin A/C Relay is designed to ensure the safety of your electrical systems. This relay switch features a 4-pin connector and is rated for 20A. It is highly reliable and provides consistent performance, making it ideal for use in Navistar vehicles. With its durable construction and reliable performance, this A/C relay is sure to keep your electrical systems running smoothly. FleetPride is your First Click in Heavy Duty®.