URO 11611432559 Engine Crankcase Breather Hose

BMW Crankcase Breather Hose Replacement

This URO engine crankcase breather hose restores the connection between the vent valve and valve cover on select BMW models. Built for direct fitment, it addresses cracked or split breather hose issues that can affect crankcase ventilation and hydrocarbon emission control.

• Direct replacement for the engine crankcase breather hose
• Fits select BMW 323i, 325i, 330i, 525i, 530i, X3, X5, and Z4 applications
• Made from PA6 / PA12 GF30 for heat and oil-vapor resistance
• Molded hose design with two hose connectors and one branch
• 0.71 in. inside diameter at both ends
• URO part number 11611432559

Fitment and Application Details

Compatible With BMW crankcase ventilation system applications where the hose runs from the vent valve to the valve cover. Fits 2001-2006 BMW 325Ci, 330Ci, 2004-2006 BMW X3, 2001-2005 BMW 325i, 325xi, 330i, 330xi, 525i, 530i, 2003-2005 BMW Z4, 2003-2004 BMW X5, 2001-2002 BMW X5, 1999-2002 BMW Z3, 2000 BMW 323Ci, 323i, 328Ci, 328i, 528i, and 1998-1999 BMW 528i and Z3, with notes as listed in the fitment data. This part cross-references Genuine 11611432559 and VAICO V20-0785 for the same application.

What This Hose Helps Address

• Cracked or split crankcase breather hose
• Loss of crankcase ventilation flow
• Oil vapor leakage around the breather circuit
• Hydrocarbon emission control faults related to hose failure
• Fitment issues caused by a damaged molded hose

Installation Notes

Inspect the vent valve, valve cover connection points, and adjacent vacuum or breather lines before installation. Confirm the hose routing matches the original BMW configuration, especially on X5 models with production-date notes and on applications listed as “to valve cover from vent valve.”

Quality Assurance

URO backs this hose with a 24-month unlimited mileage warranty. The replacement design uses high-quality materials selected to resist cracking and splitting from engine heat and oil vapor, helping restore proper crankcase breather function on BMW 325Ci, 330i, X3, and related applications.