F30 F31 AA Concepts Co CARBON FIBER SIGNATURE REAR DIFFUSER N54 JB4 on a completely stock

JB4 on a completely stock automatic 135i

they inherently suffer from fuel slosh

BMW GTS OLED STYLE

This pump boasts a Walbro 535 (F90000295) primary pump and a Walbro 525 (F90000285) secondayr pump offering maximum flow

Fits 2012-2018 3 series F30 F31

F30 F31 AA Concepts Co CARBON FIBER SIGNATURE REAR DIFFUSER N54 JB4 on a completely stockPRODUCT DETAILS & FEATURES: THIS ITEM IS CURRENTLY IN PRODUCTION 2021 UPDATE (Please allow 3 4 weeks for fulfillment, well worth the wait!) We are EXTREMELY excited to finally show you guys our latest signature product! We know the F30 community could use an aggressive diffuser! If You're Looking For Your F30 To Stand Out. This Is The diffuser For You Fitment: 2012 2018 F30 f31 3 Series ONLY works on Msport rear bumpers! We can supply you with one as