Wehrli - WCF205-28Weld Bung, Aluminum, MAF Sensor, LMM D-MaxWehrli Custom Fab Weld Bung, Aluminum, MAF Sensor, LMM DuramaxThese billet Mass Air Flow (MAF) bungs for 2007.5-2010 LMM 6.6L Duramax engines are CNC machined from 6061-T6 aluminum in DeKalb, IL...