Vaico V20-1117 Engine Crankcase Vent Valve

Engine Crankcase Vent Valve for BMW Applications

Vaico V20-1117 is a pressure-controlled engine crankcase vent valve for the cylinder head in BMW emission control systems. It regulates crankcase ventilation flow to help maintain proper pressure balance and oil vapor management in the engine.

Built with a Polyamid 6.6 housing and supplied with a plug, this VAICO breather valve is specified for service replacement where the original crankcase ventilation valve has worn, stuck, or lost control accuracy. The VAICO product line focuses on OE-style replacement parts for European vehicle systems, including crankcase ventilation components.

Key Features

• Part number: V20-1117
• Engine crankcase vent valve / breather valve
• Pressure controlled operating mode
• Fitting position: cylinder head
• Polyamid 6.6 housing for engine-bay durability
• Dimensions: 130 mm length, 100 mm width, 90 mm height
• Supplementary article info: with plug
• Recommended replacement interval: 60,000 km or 3 years

Detailed Description

Vaico V20-1117 is an emission control component used in the crankcase ventilation system to manage blow-by gases and support stable engine operation. As a pressure-controlled breather valve, it helps regulate ventilation flow at the cylinder head, where crankcase pressure control is critical for clean running and consistent sealing performance. This part number, V20-1117, is listed for BMW 325i, 325xi, 330i, 330xi, 525i, 525xi, 530i, 530xi, and Z4 model applications from 2006 through 2008 depending on the vehicle.

This part cross-references Febi-Bilstein 40991 for the same application.

What It Helps Address

• Excess crankcase pressure
• Oil vapor control issues in the ventilation system
• Rough idle caused by ventilation valve wear
• Vacuum imbalance related to a faulty breather valve
• Oil seepage or contamination linked to crankcase ventilation problems

Installation Notes and Tips

Install at the cylinder head and verify the plug connection is secure before returning the vehicle to service. Confirm the replacement matches the original valve type, dimensions, and operating mode before installation. For BMW 325i, 330i, 525i, 530i, and Z4 applications, compare the original part number and routing to ensure correct crankcase ventilation system service.

Quality Assurance

VAICO supplies OE-style replacement components for European vehicle systems. This V20-1117 crankcase vent valve is specified with a recommended service interval of 60,000 km or 3 years to support scheduled maintenance planning.

Compatible With

• Fits 2006-2008 BMW Z4, N/A
• Fits 2006-2007 BMW 525i, N/A
• Fits 2006-2007 BMW 525xi, N/A
• Fits 2006-2007 BMW 530i, N/A
• Fits 2006-2007 BMW 530xi, N/A
• Fits 2006 BMW 325i, N/A
• Fits 2006 BMW 325xi, N/A
• Fits 2006 BMW 330i, N/A
• Fits 2006 BMW 330xi, N/A