• For making custom intakes and blow-thru MAF.
• Weld this flange to aluminum pipe to mount the mass airflow sensor.
• Precision CNC machined out of 6061 aluminum.
• Available machined for pipe diameters from 2" thru 4".
• Engraved with an arrow to indicate airflow direction.
• Includes stainless M4 mounting screws.
• 1.23" (31.2mm) bore diameter, 2.15" (54.6mm) between screw holes.
• Made in USA.  We've been making these since 2006 and have sold and used thousands.
• Fits the Denso MAF used on the following Subaru applications:

Subaru WRX - 2008-2014
Subaru STI - 2008-2021
Subaru Legacy / Outback - 2010-2015

Forester - 2008-2016