Genuine 11157567801 Engine Crankcase Breather Hose

BMW Crankcase Breather Return Pipe

This Genuine engine crankcase breather hose is a direct-fit emission control component for BMW crankcase ventilation service. Part number 11157567801 is used as a return pipe on select 2006-2008 BMW Z4 and 2006-2007 BMW 525i, 530i, 325i, and 330i applications.

Key Features

• Genuine OE replacement crankcase breather hose
• Return pipe for the crankcase ventilation system
• Fits select BMW Z4, 525i, 530i, 325i, and 330i models
• Part number 11157567801 for accurate ordering and service matching
• Built for emission control system repair and maintenance

Detailed Description

Part number 11157567801 is an engine crankcase breather hose used in the emission control and crankcase ventilation system. It routes crankcase vapors through the return pipe path on the listed BMW applications, helping restore proper ventilation system function when the original hose is cracked, brittle, or leaking. Compatible With 2006-2008 BMW Z4, return pipe; 2006-2007 BMW 525i, return pipe; 2006-2007 BMW 530i, return pipe; 2006 BMW 325i, return pipe; and 2006 BMW 330i, return pipe. This Genuine part number 11157567801 is a practical OE-style service part for BMW crankcase ventilation repair.

What It Helps Address

• Crankcase ventilation hose leaks
• Vacuum loss in the breather circuit
• Oil vapor routing issues
• Check engine light conditions related to ventilation faults
• Rough idle or drivability concerns tied to air leaks

Installation Notes and Tips

Verify the vehicle year, model, and return pipe configuration before installation. Inspect adjoining crankcase ventilation components, seals, and connectors for wear so the repair addresses the full leak path. Confirm the hose routing matches the original layout on the BMW Z4, 525i, 530i, 325i, or 330i application.

Quality Assurance

Genuine OE replacement part for service work on the listed BMW applications. Part number 11157567801 is identified for accurate fitment matching and parts lookup.