K&N Rubber Hose (08761) Audi S3 MK1 and the solenoid is plug

and the solenoid is plug and play with the wiring harness

When used with a 5 gallon tank

Choice of hose colour

1 x FMDV004 Valve

K&N Rubber Hose (08761) Audi S3 MK1 and the solenoid is plugK&N rubber hose couplers are designed to connect intake tubes for custom do it yourself racing air intake applications or used as a replacement part. K&N couplers are constructed from high quality reinforced rubber and made to last. This coupler connects two 4 inch tubes and is 2 inches in length. 4 inch inside diameter 2 inches long Constructed from durable reinforced rubber Designed to be used as a replacement part or for custom do it yourself