Crankcase Breather Hose 078103213B 02-05 VW Passat Audi A4 A6 2.4L 2.8L V6

Crankcase Breather Hose 078103213B for Volkswagen and Audi

This crankcase breather hose, referenced as 078103213B, connects the crankcase ventilation system on 2002-2005 Volkswagen Passat and Audi A4 and A6 models with the 2.4L and 2.8L V6 engine, routing blow-by gases back into the intake.

Overview

This crankcase breather hose restores proper crankcase ventilation on 2002-2005 Volkswagen Passat and Audi A4 and A6 models with the 2.4L and 2.8L V6. It replaces a cracked or clogged breather line so blow-by gases route correctly and oil vapor stays out of the wrong places. A direct-fit replacement for owners chasing vacuum leaks or oil residue around the valve covers.

Built For Performance

• OEM cross-reference 078103213B for confident matching
• Molded shape follows the factory routing for a clean fit
• Oil and heat resistant material suited to crankcase vapor
• Seals securely at both connection points to prevent vacuum leaks
• Direct replacement for a cracked or hardened original hose

Fits These Machines

• for Volkswagen Passat 2002-2005 2.4L and 2.8L V6
• for Audi A4 2002-2005 2.4L and 2.8L V6
• for Audi A6 2002-2005 2.4L and 2.8L V6

On-The-Job Use

• Fixing rough idle and vacuum leaks tied to a cracked breather hose
• Replacing a hardened or split line during routine engine service
• Stopping oil mist buildup around the valve cover area
• Restoring proper crankcase ventilation on V6 Passat and Audi models

Specs At A Glance

Good To Know

Q: How do I know if my breather hose needs replacing? A: Look for cracks, hardening, or oil residue at the hose ends, along with rough idle or vacuum codes. A split breather hose often causes unmetered air to enter the engine.

Q: Is this an original Volkswagen or Audi part? A: This is a replacement hose cross-referenced to 078103213B and is not an original brand part. Confirm the part number against your vehicle before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.