This BMW auxiliary water pump is a must-have for any serious car enthusiast. It is designed to fit the F01, F06, F10, F11, F12, and F13 5, 6, and 7 series models and is manufactured by a reputable company. The part number is 9239313 and it is compatible with BMW's N63 4.4L engine.

This item is ideal for those who are looking to replace a faulty or worn-out pump. It is used but has been well-maintained and is in great working condition. It is highly recommended for those who are looking to boost the performance of their car.