Emission Control-The Vapor Tank Purification Valve Controls The Flow of Gasoline Vapor to That The Steam Emitted by The Engine During Start-Up, Acceleration, and Driving Meets Environmental Standards. It Effectively Reduces The Emission of Harmful Gases, Helping to Protect The Environment and Improve Air Quality. Fuel Economy-The High-Quality Steam Tank Purification Valve Design Can Effectively Recover and Utilize Gasoline Vapor, Reintroduce It Into Engine Combustion, Improve Fuel Efficiency, and Reduce Fuel Consumption. This Is An Important Selling Point for Car Owners, As It Can Save Fuel Costs and Reduce Emissions. Engine Performance-The Normal Operation of The Steam Tank Purification Valve Helps to Maintain The Normal Operation of The Engine and Its Stable Performance. By Controlling The Steam Cycle, It Can Prevent Engine Performance Degradation or Malfunctions Due to Steam Blockage. Part Number:1F7313975 3U5Z9C915C 9U5Z9C915B Fit for: 2004-2010 For Explorer 2007-2010 For Explorer Sport Trac 2005-2006 For 2004-2011 For 2004-2005 For B2300 2004-2008 For B3000 2004-2006 For B4000 2004-2010 For Mercury Mountaineer Colour:Black Material:ABS Package Contents: 1 x Vapor Canister Purge Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.