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GENUINE BMW Crankcase Breather Hose - 11-15-7-843-151

GENUINE BMW Crankcase Breather Hose - 11-15-7-843-151

GENUINE BMW
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UGC 11-15-7-843-151
$99.09 - $99.09
$99.09
$99.09 - $99.09
$99.09
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 Breather Hose

This product also goes by these part numbers: 11 15 7 843 151, 11157843151, 11-15-7-843-151

This part also goes by the following cross reference.

Cross Reference Part Number: 11157843151

Fits These Vehicles 3 applications
BMW
Make Model Engine Years
BMW M6 Gran Coupe 4.4V8 2014–2019
BMW M6 4.4V8 2012–2018
BMW M5 4.4V8 2013–2016

Fitment data last updated: 2026-06-30

Fits 3 vehicle applications Check vehicle fitment before ordering View fitment

About this Crankcase Ventilation (PCV)

The GENUINE BMW 11-15-7-843-151 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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