Vaico V20-1794 Engine Crankcase Breather Hose

Engine Crankcase Breather Hose for BMW

Vaico V20-1794 is an engine crankcase breather hose for emission control and crankcase ventilation service. It is built to OE number 11 61 7 547 185 specifications and sized for a direct replacement on supported BMW applications, including BMW X5, 545i, 645Ci, 745i, and 745Li.

Key Features

• OE reference: 11 61 7 547 185
• Length: 260 mm
• Height: 45 mm
• Width: 90 mm
• Brand line: VAICO aftermarket replacement part
• Part number: V20-1794

Application Details

Vaico V20-1794 is an aftermarket crankcase breather hose for BMW emission control systems. It is listed for cylinders 1 to 4 on the following vehicles: Fits 2004-2006 BMW X5, N/A; Fits 2004-2005 BMW 545i, N/A; Fits 2004-2005 BMW 645Ci, N/A; Fits 2002-2005 BMW 745i, N/A; Fits 2002-2005 BMW 745Li, N/A. This part cross-references Rein ABV0148 for the same application.

What This Part Helps Address

• Cracked or leaking crankcase breather hose connections
• Oil vapor routing issues in the crankcase ventilation system
• Vacuum leaks related to deteriorated breather hose material
• Rough idle or drivability concerns tied to ventilation leaks
• Emission control faults caused by restricted crankcase ventilation flow

Installation Notes and Tips

Confirm OE number 11 61 7 547 185 before installation and compare hose length, height, and width to the removed part. Inspect adjoining ventilation components, seals, and fittings for wear or contamination before reassembly. For BMW X5, 545i, 645Ci, 745i, and 745Li applications, verify cylinder coverage and routing against the vehicle’s original layout. Part number V20-1794 should be matched to the vehicle’s existing crankcase ventilation configuration.

Quality Assurance

Vaico supplies aftermarket replacement components for OE-style service applications. This breather hose is cataloged to the specified OE number and dimensional profile for fitment verification during repair planning.