Car enthusiasts and mechanics, this Aitken vapor leak detection pump is exactly what you need when your check engine light comes on with EVAP system codes! This crucial component monitors your vehicle's evaporative emissions system for leaks that can cause failed emissions tests and poor performance. Compatible with numerous BMW models (1 through 7 series, M series), plus Audi, Volkswagen, Volvo, Land Rover, and Mercedes-Benz vehicles. The 4-pin design operates on 12V and replaces multiple OE part numbers including 16136752551 and 7L0906243. Installation is straightforward if you're familiar with automotive repairs – just locate your old pump, disconnect it, and plug in this new unit. This brand new pump comes with a 1-year warranty for peace of mind. If you're dealing with P0440, P0455, or other EVAP-related trouble codes, replacing this detection pump often solves the problem without expensive dealership visits. Whether you're a DIY mechanic or professional technician, having the right emissions components on hand can save time and money. This pump delivers OEM-quality performance at a fraction of the dealer price, keeping your vehicle running clean and passing emissions tests with flying colors!