The product is a set of pressure pump fuel return lines for BMW E90 and E87 models with diesel engines. Specifically, these lines are designed for the N47 engine and have part numbers 7800669 and 7800671. Manufactured in Germany, these front-placed lines are essential components for ensuring proper fuel circulation in the vehicle. With OE/OEM numbers like 13537800671 and 13537800669, these high-quality BMW parts are a reliable choice for maintaining your vehicle's fuel system.