Vaico V20-8711 Engine Crankcase Breather Hose Check Valve

Engine Crankcase Breather Valve for BMW

Restore crankcase ventilation performance with this VAICO engine crankcase breather hose check valve, part number V20-8711. It is built for BMW applications that use the complete cylinder head cover assembly and is listed for 2012-2018 BMW 320i, 320i xDrive, 328i, 328i xDrive, 528i, 528i xDrive, X1, X3, X4, X5, 228i, 228i xDrive, 428i, and related models.

VAICO Expert Kits+ packaging brings the needed components together in one box for a cleaner repair process. The V20-8711 assembly uses a Polyamid 6.6 housing, NBR/ACM sealing materials, and includes a breather valve with gaskets/seals for the specified BMW cylinder head cover applications.

Key Features

• Engine crankcase breather hose check valve for BMW crankcase ventilation service
• VAICO part number V20-8711
• Polyamid 6.6 housing for the valve assembly
• NBR (Nitrile Butadiene Rubber) / ACM (Polyacrylic Rubber) seal material
• Includes breather valve and gaskets/seals
• Dimensions: 530 mm length, 340 mm width, 170 mm height
• Packaged as VAICO Expert Kits+ for consolidated repair parts

Detailed Description

This crankcase breather valve assembly is used in BMW emission control and crankcase ventilation systems where the cylinder head cover incorporates the breather circuit. It cross-references BMW OE part number 11 12 7 588 412 for the same application. For BMW 320i, BMW 328i, BMW X1, and other listed models, V20-8711 supports the breather function within the complete cylinder head cover setup and is specified with gaskets/seals for a proper service replacement.

VAICO V20-8711 is a fitment-based replacement for 2012-2018 BMW 320i, 2013-2018 BMW 320i xDrive, 2012-2016 BMW 328i, 2013-2016 BMW 328i xDrive, 2012-2016 BMW 528i, 2012-2016 BMW 528i xDrive, 2012-2015 BMW X1, 2016-2017 BMW X3, 2015-2018 BMW X4, 2016-2018 BMW X5, and additional 2 Series, 4 Series, and Z4 applications listed in the fitment data.

What It Helps Address

• Crankcase ventilation faults related to a worn breather valve
• Oil vapor control issues from a damaged valve or seal
• Vacuum leaks at the cylinder head cover breather circuit
• Rough idle or drivability concerns tied to ventilation system leakage
• Service replacement needs for BMW cylinder head cover assemblies

Installation Notes

Verify the OE number, engine configuration, and cylinder head cover style before installation. This part is listed for complete cylinder head cover applications with screws and should be matched to the vehicle’s original breather system layout. Inspect the mating surfaces and replace any worn seals or gaskets during service to maintain a proper seal.

Quality Assurance

VAICO Expert Kits+ packaging groups the required service components in one box for the listed application. The part is built with a Polyamid 6.6 housing and NBR/ACM sealing materials to match the demands of BMW crankcase ventilation service.