Turbo Inlet Pipe, Rein - F22, F3X, F10, E84, F25, F26, E89, N20, N26

This part is listed by BMW as BMW part number 13717605638 (13 71 7 605 638) and is described as the lower inlet pipe leading into the turbo on N20/N26 engines in F22 228i, F30 320i/328i, F32 428i, F10 528i, E84 X1, F25 X3, F26 X4, and E89 Z4 models.

This plastic tube connects the air intake elbow with the inlet on the turbocharger. Over time and with exposure to heat the plastic can crack, leading to unfiltered air entering the intake as well as causing rough running, stumbling, throttle surging, poor running, and misfires. These can be caused by other things but a leak in the intake boot is easy to check and inexpensive to fix!

This part is manufactured by an aftermarket supplier of European auto parts, including many intake components. While not carrying OEM status, this part follows the design of the original very closely and uses similar materials. An aftermarket part may even have the same TUV approval as its OEM counterpart. The brand may even be OEM to another manufacturer besides BMW. This aftermarket brand has a two year warranty - the same as Genuine BMW and OEM brands.