Yes, secondary air pump....Many of them get noizy after some time, it will stop working soon...
Specialized in BMW recycling, all OEM used parts
Up to 90% off new cost!!!
Most models E30 E36 E46 E90 E92 E93 E34 E39 E60 E32 E38 E65 E66 X3 X5 M3 M5 Z4
Etobicoke location opening mid June!!!!
Call 11-8PM 416 821-2578
New inventory daily. 50+ cars in stock!