85mm MAF Housing

The 034 Motorsport MAF housing is precision CNC machined in-house from billet aluminum, featuring a constant 85mm inside diameter. This component is designed for modified B5 Audi S4/RS4 and C5 Audi A6/Allroad 2.7T vehicles that are running upgraded RS4 K04 or larger turbos, along with matching fuel injectors and appropriate software. It is engineered to maintain tight tolerances and provides 3.5" or 89mm OD hose connections, with a precisely machined flange for the Bosch MAF element. This MAF housing is specifically fit for the 2000-2000.5 Audi S4/RS4 (B5) and the 2000-2000.5 Audi A6 (C5), both with the 2.7T engine. Please note that optional airbox adapter pieces, designed to integrate with either the factory S4 or RS4 airbox, are sold separately. The MAF sensor itself is not included with this housing. An important emissions notice is in effect: This product is sold for racing use and for vehicles not registered for on-highway use. It is not legal for use on emissions-controlled highway or street vehicles. It is not for sale or use in the state of California on any pollution-controlled vehicle.