The secondary air injection system is an emission control device that introduces fresh air into the engine to prevent high emissions during startup. Turner Motorsport has all of the SAI parts you will need to get your BMW emissions compliant.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat! This fits the N51 SULEV Engine Only
This is the secondary air pump valve for E9x M3 with the S65 V8 engine. Over time carbon builds up inside the secondary air pump valve causing it not to close properly. This failure to close properly can allow exhaust and moisture to get past the valve and enter the secondary air pump, leading to premature pump failure.
Show More Show Less
