Replacement turbocharger core (front bank) for the BMW N54 3.0L twin-turbo engine, built to OEM Mitsubishi specification with no core charge required. Addresses classic N54 turbo failure symptoms - loss of boost, whining, smoking, or a car that won't hold full boost - restoring factory-spec forced induction on the front bank.

Fitment: BMW N54 3.0L twin-turbo models - E90/E92/E93 335i (2007-2010), E82 135i/1M (2008-2011), E60/E61 535i/535xi, E89 Z4 sDrive35i (confirm exact side/position - front vs. rear turbo - at checkout).