Features: 1.Applicable Model: Control valve is fit for Q7 3.6L 4.2L 2007?2010, fit for R8 All Models 2008?2012, fit for RS4 All Models 2007?2008, fit for S4 All Models 2004?2009, etc. 2.Part Number: AC compressor control valve replace part number is ECV15 for reference. Please double check the part number of your item to ensure perfect fit. 3.Accurate Control: Control valve adopts advanced electronic control technology, which enables high precision control, thus improving the air conditioning effect of the vehicle. 4.Practical Parts: Control valve is to regulate the car air conditioning system cooling, heating components, it is controlled by electromagnetic force solenoid valve automatically open and close to change the compressor air flow. 5.Stable Driving: Reliable control makes your vehicle more energy efficient and environmentally friendly, while improving driving efficiency and making your driving experience more comfortable. Specification: Item Type: AC Compressor Electronic Control Valve Material: Metal, ABS Reference Part Number: ECV15 Application: Control valve is to regulate the car air conditioning system cooling, heating components, it is controlled by electromagnetic force solenoid valve automatically open and close to change the compressor air flow, so that the air conditioner can be cooled normally. Applicable Compressor Model: for DENSO 7SEU17C, 7SEU16C, 6SEU14C Applicable Model: Fit for Q7 3.6L 4.2L 2007?2010 Fit for R8 All Models 2008?2012 Fit for RS4 All Models 2007?2008 Fit for S4 All Models 2004-2009 Fit for S6 All Models 2007-2011 Fit for S8 All Models 2007-2010 Note: 1.Please double check the part number of your item, matching information is for reference only. 2.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!