OE turbocharger hoses and lines are made to perform year-round in any climate. For that reason, they tend to be constructed of flexible materials that will wear out in time. Here you will find everything you need to service all of the turbochargers connecting pipes and oil lines.
This oil supply line to the turbocharger is an updated design that incorporates a check valve. It's a new design after BMW found that some 328/528 cars had oil leaking into the exhaust which caused blue smoke on a cold start. The new design fixes the problem with the check valve. If you have blue smoke on startup in your F30 328 or F10 528 BMW will replace your original line with this new one (check with BMW before ordering, they may cover its replacement cost).
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Genuine BMW Pipe, Return, Cooling For Turbocharger - This item fits the following BMW Chassis: E71,E82,E90,E92,E93,F06,F10,F12,F13,F15,F16,F22,F25 X3,F26 X4,F30,F32,F33,F34,F36
Genuine BMW Gasket Asbestos Free - This item fits the following BMW Chassis: E89 Z4,F02,F10,F22,F25 X3,F26 X4,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83