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VW MKIV 337/20th Secondary Air Injection Pump - Starting At $249.95!

A failed air injection pump is more than a noisy annoyance. Bad pumps store a fault code and turn on your check engine light, a sure way to fail your local emissions test.

Dying pumps don't go quietly. As they fail, they make a loud buzzing noise, audible shortly after a cold engine start up; continuing for a minute or so after that.

Our secondary air pump can put your air injection system back to normal, eliminate all that racket, and turn off that pesky dash light.