An Emissions Component. that is part of the Secondary Air Injection System. which is responsible For Pumping Clean Air into the vehicles Exhaust stream to promote a Cleaner and more Complete burn beFore the fumes Exit the Tailpipe.

PUMP ASSEMBLY-SECONDARY AIR Secondary Air Injection Pump

Fits Forester, STI, WRX

Air Injection System Air Pump
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 Subaru to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Subaru genuine parts.