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. Ensures engine stability by keeping fuel mixture levels in balance, preventing issues such as erratic idling or unexpected stalls from vapour fluctuations. Proactively captures and reuses fuel vapour from the automotive system, reducing emissions of harmful environmental gases., Manufacturer: ZTAWWCJ