CTS Turbo B5 S4 MAF housing adapter for 85mm

The CTS Turbo MAF housing adapter allows fitment of 85mm mass airflow sensors to 1999-2001 Audi B5 S4 models. Engineered for tuners upgrading intake systems beyond factory specifications, this adapter bridges the gap between standard MAF mounting points and larger-diameter sensors required for increased airflow capacity. Constructed from CNC-machined aluminium for precise fitment and durability. Essential hardware when scaling up forced induction setups on the 2.7T platform, ensuring accurate metering with upgraded turbocharger configurations. Suits performance workshops building higher-output B5 S4 engines requiring proper MAF sensor integration.