This aluminium upgrade charge pipe kit ensures optimal air flow with maximum pressure resistance. It is a direct replacement of the OEM plastic tube. Advantages of the product: enlarged cross-section / �76mm increases air flow rate absolutely pressure-resistant makis itsuitable for all performance levels prepared for water/methanol injection 1/8NPT black powder coating to protect against corrosion plug and play Suitable for the following vehicles with the B58.2 engine: BMW Z4 G29 M40i Toyota GR Supra MK5