- Designed to adapt the S4/S5 Lower intake plenum to the FD Upper Intake Plenum.
- Material: 6061 Aluminum CNC Machined in house
- This adapter allows you to run the far more efficient FD upper intake plenum that the s4 and s5 engines lack
- The adapter adds 40mm intake runner length to help off boost low and mid range power
- Port matched to the OEM S4/S5 ports and OEM FD ports
- Hardware shown is included
- Color: Raw 6061 machined aluminum finish to allow port matching if necessary