Vaico V20-2276 Engine Crankcase Breather Hose - Oil Separator To Cylinder Head Cover

BMW Crankcase Breather Hose Replacement

This Vaico engine crankcase breather hose is an OE-style replacement for the crankcase ventilation system on select BMW models. Built to match the listed OE number and dimensions, it supports the oil separator to cylinder head cover connection on 2004-2007 BMW applications.

VAICO product line components are developed for direct-fit service work, with attention to OE reference matching and application-specific dimensions. This makes the Vaico V20-2276 a practical choice when replacing a worn or cracked BMW crankcase breather hose on the E60, E90, or Z4 platform.

• OE reference: 11 15 7 522 931
• Part number: V20-2276
• Length: 294 mm
• Height: 55 mm
• Width: 78 mm
• Lightweight construction at 0.101 kg
• Position: oil separator to cylinder head cover
• Cross-reference part numbers include 7 522 931 and 917125

Detailed Product Overview

The Vaico V20-2276 engine crankcase breather hose is specified for BMW crankcase ventilation service where the hose routes between the oil separator and the cylinder head cover. Using the OE number 11 15 7 522 931 as the reference point, this hose is intended for direct replacement on select 2004-2007 BMW 323i, 325i, 325xi, 330i, 330xi, 525i, 525xi, 530i, 530xi, and Z4 models. If you are searching for a BMW crankcase breather hose replacement, BMW oil separator hose, or V20-2276 for BMW 525i/530i applications, this part matches the listed fitment and dimensions.

Vehicle Fitment

• Fits 2006-2007 BMW 525i, oil separator to cylinder head cover.
• Fits 2006-2007 BMW 525xi, oil separator to cylinder head cover.
• Fits 2006-2007 BMW 530i, oil separator to cylinder head cover.
• Fits 2006-2007 BMW 530xi, oil separator to cylinder head cover.
• Fits 2007 BMW Z4, oil separator to cylinder head cover.
• Fits 2006 BMW 323i, oil separator to cylinder head cover.
• Fits 2006 BMW 325i, oil separator to cylinder head cover.
• Fits 2006 BMW 325xi, oil separator to cylinder head cover.
• Fits 2006 BMW 330i, oil separator to cylinder head cover.
• Fits 2006 BMW 330xi, oil separator to cylinder head cover.
• Fits 2004-2006 BMW Z4, oil separator to cylinder head cover.

Common Problems This Part Can Address

• Cracked or brittle crankcase breather hose material
• Oil separator hose leakage at the cylinder head cover connection
• Vacuum-related drivability issues caused by damaged ventilation plumbing
• Unstable crankcase ventilation routing on aging BMW engines
• Fitment issues when replacing a hose that no longer matches OE dimensions

Installation Notes and Tips

Confirm the OE number 11 15 7 522 931 and compare the hose length, height, and width before installation. Inspect the oil separator and cylinder head cover ports for wear, oil residue, or damage so the new hose seals correctly. For BMW 525i, 530i, and Z4 applications, verify the vehicle build date and engine configuration against the listed fitment notes before ordering.

Quality Assurance

This Vaico V20-2276 hose is built around OE-number-based application matching for the listed BMW fitments. The part number V20-2276 and the OE reference 11 15 7 522 931 provide a clear basis for replacement selection on the specified BMW crankcase ventilation applications.