90 Degree Elbow Reducer Silicone Hose Coupler - 3.50" to 4.00" ID - Black - SI-ER-89102-BLK BMW Z4 In testing at AEM

In testing at AEM

Up to 2000 FWHP – forced air induction

Pro Series Intake Manifold runner exits are also machined to best match the cylinder head's ports

For further heat protection this kit includes thermal reflective wrap for the oil lines

It must be kept well-oiled and not exposed to moisture

90 Degree Elbow Reducer Silicone Hose Coupler - 3.50" to 4.00" ID - Black - SI-ER-89102-BLK BMW Z4 In testing at AEMReinforced 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