B58 G20 M340i turbo oil return line 11428679020

This is the genuine BMW turbo oil return line (part number 11428679020) for B58-powered G-chassis cars - specifically the G20 M340i, G29 Z4 M40i, G01 X3 M40i, G30 540i, G05 X5 40i and others listed.

It fixes oil seepage at the turbo housing, prevents oil pooling and supports reliable operation on fast road or track day use. Not a pattern part - it’s the OEM-specified component, correctly shaped and rated for B58 oil temperatures and flow.

• Direct-fit replacement - no modification needed
• Addresses known leak points on high-mileage or modified B58 engines
• Recommended during turbo service or full oil line refresh