The Dorman 911-021 EVAP Vent Valve Solenoid is a replacement part made of plastic that is designed for rear placement on vehicles such as Silverado and Tahoe trucks. It has an outlet diameter of 0.78 inches and an inlet diameter that matches the outlet size for a perfect fit. This solenoid valve has two connectors and is a direct replacement for the original part, ensuring proper functionality of the EVAP system. Manufactured by Dorman, a trusted brand in car parts, this product provides a reliable solution for fuel vapor canister issues.