aFe Power Gamma Pulley GMA Power Pulley BMW M3 (E90/92/93) 09-12 V8-4.0L New Products For additional styles type "Euro-Plug"

For additional styles type "Euro-Plug" in the Amazon search window

the rumors are true - they don't matter once you remove the backpressure issues of the stock configuration (and you can't open the valve yourself anyway)

Comes attached on original pin card

or damage to the spark plug may result

CORSA Performance 5/8in

aFe Power Gamma Pulley GMA Power Pulley BMW M3 (E90/92/93) 09-12 V8-4.0L New Products For additional styles type "Euro-Plug"aFe Power Gamma Pulley GMA Power Pulley BMW M3 (E90 92 93) 09 12 V8 4. 0L aFe Powers new power pulley brings performance engineering to your BMW. This power pulley is a complete bolt on kit, including the pulley, bolts, and belts. aFes power pulleys are CNC machined out of billet aluminum and black anodized for that aggressive look under the hood. This power pulley does not modify factory harmonics or dampening. When it comes to engineering for power,