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This secondary air injection pump from Pierburg injects fresh air into the exhaust stream to reduce emissions during cold starts
It is designed to fit various vehicles with compatible vent sizes
Broad Fitment: Fits Audi A3
Broad Compatibility: Fits multiple Audi models and engine configurations
Radiator Air Duct Mercedes This secondary air injection pumpYour engine creates a lot of heat, make sure the radiators are being properly fed with cool air through this air duct. If yours has been cracked or damaged in any way, it is wise to simply replace the whole unit as it will not be doing the job it was intended to do.