These 85mm Inside Diameter Bosch MAF Housings are designed for use in modified B5 Audi S4/RS4 & C5 Audi A6/Allroad 2.7T cars running upgraded RS4 K04 or larger turbos with appropriate software and matching fuel injectors.
Precision CNC machined in-house from billet aluminum, these housings maintain a constant 85mm inside diameter, and can be used with our stock airbox adapters, or 3.5" silicone couplers.
- Precision CNC machined to the tightest tolerances.
- Constant 85mm inside diameter for use with most K04/BT software.
- 3.5" or 89mm OD hose connections.
- Precisely machined flange for Bosch MAF element.
- Engraved "034Motorsport" logo.
- 2000 - 2000.5 Audi S4/RS4 (B5)
- 2000 - 2000.5 Audi A6 2.7T (C5)
*Please Note: Optional airbox adapter pieces designed to work with either the factory S4 or RS4 airbox are sold separately. Does not include MAF sensor*
**034 also carries an 85mm MAF housing for the later Hitachi style MAF element, which is available as ES2864568
This Part Fits the Following Vehicles