Established in 1993, Guanfa Valve Manufacture Co., Ltd. is specialized China egr valve manufacturer and distributor of valves, hoses, tubes and pipes. Our oem egr valves are suitable for acid, alkali, water, steam, seawater, coal gas and natural gas. They are widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy. The use of specialized software of Pro/E and CAD has shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of products. Our high-quality products have been exported to the North Amercia, UK, USA, Germany, Italy, India, France, Australia, Japan.

This Exhaust Gas Recirculation Valve, is an aftermarket replacement part that has the following specifications: Direct Fit. Built to strict quality control standards. Includes EGR gasket. Replaces GM Part Number: 12578043. Fits Vin "W" engines - CPI (Central Port Injection). If your vehicle is running rough or has failed emissions due to a bad EGR valve then this is the part for you. The EGR valve in your vehicle is a critical part of the emission reduction system on your vehicle. At certain throttle levels the valve allows exhaust gasses to recirculate through the engine combustion process. This process is key in reducing Nitrogen Oxide emissions. If you need to match the 8th digit of your VIN (Vehicle Identification Number) to the 8th digit we may have listed in our short description, you can either find your VIN number in the lower driver side corner of the windshield or on your vehicle registration.

Poor Idle. Varying engine speed with no change in throttle position. Overheating. Increased Oxides of Nitrogen NOx emissions. Failed vehicle emission test. Check all vacuum lines to make sure there are no leaks. When the vehicle is idling, squeeze up on the bottom of the EGR valve diaphragm. If your vehicle's engine idle speed slows, or the engine stalls, your EGR valve is OK. If the engine speed does not change, or you can feel hitches in the movement of the valve, replace the valve. Meters exhaust gas into the intake manifold. This exhaust gas reduces (EGR) combustion chamber temperature and as a result reduces N0X emissions. This is a emission parts.Ensuring the utmost attention to detail every part number is inspected and cross-checked for quality control purposes throughout the entire manufacturing process. Standard is a leading independent manufacturer and distributor of replacement parts for motor vehicles in the automotive aftermarket industry.

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