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GENUINE BMW Crankcase Vent Hose - 11-15-7-646-086

GENUINE BMW
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UGC 11-15-7-646-086
$115.98 - $115.98
$115.98
$115.98 - $115.98
$115.98
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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GENUINE BMW

Crankcase Vent Hose

This product also goes by these part numbers: 11 15 7 646 086, 11157646086, 11-15-7-646-086

This part also goes by the following cross reference.

Cross Reference Part Number: 11157646086

Fits These Vehicles 16 applications
BMW
Make Model Engine Years
BMW X6 4.4V8 2008–2014
BMW X5 4.4V8 2011–2013
BMW 550i xDrive 4.4V8 2011–2013
BMW 550i 4.4V8 2011–2013
BMW Alpina B7L xDrive 4.4V8 2011–2012
BMW Alpina B7L 4.4V8 2011–2012
BMW Alpina B7 xDrive 4.4V8 2011–2012
BMW Alpina B7 4.4V8 2011–2012
BMW 750i xDrive 4.4V8 2010–2012
BMW 750i 4.4V8 2009–2012
BMW 750Li xDrive 4.4V8 2010–2012
BMW 750Li 4.4V8 2009–2012
BMW 650i xDrive 4.4V8 2012–2012
BMW 650i 4.4V8 2012–2012
BMW 550i GT xDrive 4.4V8 2010–2012
BMW 550i GT 4.4V8 2010–2012

Fitment data last updated: 2026-06-30

Fits 16 vehicle applications Check vehicle fitment before ordering View fitment

About this Crankcase Ventilation (PCV)

The GENUINE BMW 11-15-7-646-086 is part of the crankcase ventilation (PCV) system, which routes gases that escape past the pistons back into the intake to be burned, and separates oil out of them. When the system fails, crankcase pressure and oil consumption can rise quickly.

Frequently asked questions

What does the crankcase ventilation system do?

It relieves pressure inside the engine by drawing blow-by gases back into the intake, while an oil separator or valve keeps oil out of the intake. Correct crankcase pressure protects seals and gaskets.

What are the signs of a failed PCV valve or oil separator?

A whistling or howling noise at idle, rough idle, lean-running fault codes, higher oil consumption, oil leaks from seals, blue smoke, or suction at the oil filler cap strong enough to hold the cap down.

What should I replace along with it?

Crankcase vent hoses become brittle with heat and age, so inspect and replace cracked hoses and fittings at the same time. On many European engines, the valve cover and separator are serviced together.

Can I replace PCV components myself?

Many parts are accessible with basic tools, though some separators sit under the intake manifold. Handle old plastic fittings carefully, as they can break during removal.

How do I make sure this crankcase ventilation part fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

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