6-Inch Billet Aluminum Mass Air Flow Housing

The Performance MRP HA-MK4 is a mass air flow housing engineered to fit all Mk4 and Mk5 2.5L Volkswagen MAF sensors. This component is CNC machined from 6061 billet aluminum and measures 6 inches in length, featuring a 1/4 inch aluminum honeycomb air straightener screen to ensure accurate airflow readings. The housing is designed with a flange that matches the factory shape of the sensor and includes undercut ends for secure clamping. It is constructed with precision TIG welds and uses stainless steel hardware. Each unit is hand buffed and inspected for consistent quality, and is suitable for powder coating, anodizing, or polishing. The product is available with or without an optional air straightener. This MAF housing is designed to fit a wide range of Volkswagen models including the 1999.5-2004 Jetta (all engines), 1999.5-2004 Golf (all engines), 1995.5-2004 GTI (all engines), 2004 & 2008 R32 3.2L 24V VR6, 1998-2004 Beetle (all engines), 2006-2009 Rabbit 2.5L I5, and 2005-2014 Jetta 2.5L I5. Always use the vehicle parts finder to verify specific fitment.