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Breather Hose

Genuine VW/Audi Breather Hose

GENUINE VW/AUDI
Disponibilidad:
¡Solo 2 izquierda!
SKU 077-103-221 N
$93.58 - $93.58
$93.58
$93.58 - $93.58
$93.58
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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This Genuine VW/Audi Breather Hose (OEM part number 077103221N) routes crankcase gases back into the intake system for emission control. Made from oil-resistant rubber to withstand engine bay conditions. A direct replacement for cracked or clogged hoses to maintain proper crankcase ventilation.

Key Features & Benefits

  • OEM Quality: Factory-spec hose with correct inner diameter and wall thickness.
  • Durable Material: Resistance to oil, heat, and ozone for extended service life.
  • Easy Replacement: Simple pull-off and push-on installation with factory-style clips or connectors.

Technical Specifications

Part Number 077103221N
Brand Genuine VW/Audi
Material Rubber

About This Brand

Genuine VW/Audi is the OEM manufacturer for Volkswagen and Audi vehicles, ensuring factory-grade quality and reliability.

This part also goes by the following cross reference.

Cross Reference Part Number: 077103221N

Fits These Vehicles 5 applications
Audi
Make Model Engine Years
Audi A6 Quattro 4.2L V8 2000–2004
Audi A8 Quattro 2000–2004
Audi A8 Quattro 4.2L V8 2005–2006
Volkswagen
Make Model Engine Years
Volkswagen Phaeton 4.2L V8 2004–2006
Volkswagen Touareg 4.2L V8 2004–2006

Fitment data last updated: 2026-07-18

Fits 5 vehicle applications Check vehicle fitment before ordering View fitment

About this Crankcase Ventilation (PCV)

The GENUINE VW/AUDI 077-103-221 N 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.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.