Proflow's billet aluminium flex fuel sensor adapter splits fuel flow into a bypass valve parallel to the sensor inlet. As the flex fuel sensor is directly inline with the fuel flow path, it will read the ethanol content of the incoming fuel at high and low engine speeds. Traditionally this could be done using a variety of fittings and Y-adapters. However, this compact adapter simplifies plumbing and is much less complicated to install, less restrictive, and will fit many GM flex fuel sensors such as GM # 13577429 (in-built mounting solution), 13577379 and 13577394 (both use its own mounting tabs). 

 -10AN ORB outlets deliver adequate flow volume for the most extreme of fuel systems and can be stepped down in size using reducer fittings (sold seperately). A 4-piece billet AL6061-T6 design is black anodised and uses FKM o-rings for long lasting performance.