Vapor Purge Valve/Carbon Canister Solenoid Valve fit For Buick fit For Chevrolet fit For Cadillac fit For Silverado. OEM NO. : 12606684. Reduces fuel gas emissions: effectively controls and recovers petrol vapour evaporated from the automotive fuel system, reducing pollutant emissions. Supports engine start-up and warm-up phases by delaying purge until optimal thermal conditions are met. Enhances fuel economy by recovering usable hydrocarbons that would otherwise be lost to the air., Manufacturer: QZIVNBPM