Pump. Air. Secondary Injection. Smog.
An emissions component, that is part of the Secondary Air Injection system, which is responsible for Pumping clean Air into the vehicle's exhaust stream to promote a cleaner and more complete burn before the fumes exit the tailpipe.
Secondary Air Injection Pump
Fits 128i, 328i, 328i xDrive, 328xi, M3
128i. 3 Series; Coupe/Convertible/Sedan; w/o Turbo; N51N (SULEV).
Air Injection System Air Pump - Repair or Replace
A failed air injection pump or secondary air pump will often have no noticeable symptoms beyond a check engine light, but it does cause your to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and genuine parts.