A-Premium Secondary Air Injection Check Valve Compatible with BMW X5 2003-2006 3.0L, 525i 2004-2005 2.5L, 530i 2004-2005 3.0L, Z4 2003-2005 2.5L 3.0L, Air Pump Check Control Valve with Gasket

[Vehicle Fitment]: Compatible with BMW E60 Series 525i 2004-2005 L6 2.5L, 530i 2004-2005 L6 3.0L, E53 Series X5 2003-2006 L6 3.0L, E85 Series Z4 2003-2005 L6 2.5L, Z4 2003-2005 L6 3.0L [Reference Number]:  11727553067, 11727508049, 911-975, 911975 [OE Design]: This air check valve is manufactured to the OEM specification to provide factory-fresh appearance and direct-fit. Installation is easy and doesn't take much time or require special tools. No more check engine light and better [Emission Control]: A failed check valve can cause check engine light to illuminate and exhaust emissions to increase. A new check valve promotes combustion of unburned fuel by injecting air into the exhaust pipe when the engine is started, thus reducing harmful emissions, especially during cold starts [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted secondary air injection check valves. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind