Like other N-series BMW engines, the N20/N26 commonly suffers from frequent water pump failure. Despite being an inconvenience, it is a small compromise for the pure driving enjoyment produced by your BMW. If you're seeking a quality water pump replacement, Mishimoto has you covered with our new lineup of electric water pumps specifically designed for your BMW. To further protect your cooling system and improve water pump lubrication, refill your system with Mishimoto Liquid Chillandreg Synthetic Engine Coolant. As with all our products, this water pump is covered by the Mishimoto Lifetime Warranty.