90 Degree Elbow Reducer Silicone Hose Coupler - 3.50" to 4.00" ID - Black - SI-ER-89102-BLK BMW Z4 No Tune Required – No

No Tune Required – No change in maximum boost or time to spool so it's safe to install and drive

Clutch Disc: 6250306

Valve Clearance - Intake: 0

Up to 2000 FWHP – forced air induction

Use the COBB 3/8" to 10mm Fuel Line Adapter when adding a pressure or temperature sensor to a 3/8" fuel line

90 Degree Elbow Reducer Silicone Hose Coupler - 3.50" to 4.00" ID - Black - SI-ER-89102-BLK BMW Z4 No Tune Required – NoReinforced Silicone Hose Couplers feature High Temperature Resistant Reinforcement Fabric between each layer of silicone which allows for an impressive Operating Temperature Range of 40 F to 392 F. Not suitable for use with Oil Fuel. Features: Genuine 4 ply Silicone Heat tolerance: 40 to 392 Fahrenheit Burst Pressure: 200 PSI Working Pressure: 50 PSI Wall Size: 4 mm 5 mm Compatible with antifreeze coolant