Vaico V10-4691 Engine Crankcase Breather Hose

VAICO Engine Crankcase Breather Hose for Passat

The VAICO V10-4691 engine crankcase breather hose is a direct-fit emission control component for Volkswagen crankcase ventilation service. Built to the listed dimensions of 50 mm length, 45 mm width, and 24 mm height, it is sized for a precise replacement in the crankcase ventilation system.

For Volkswagen Passat owners servicing crankcase ventilation issues, the VAICO V10-4691 provides a focused replacement option for the specified model years. VAICO is the product line identified on this part, and this hose is intended for applications where correct routing and sealing in the breather circuit are required.

Key Features

• Engine crankcase breather hose for emission control service
• Dimensions: 50 mm length, 45 mm width, 24 mm height
• Lightweight construction at 0.021 kg
• Packaged compactly for parts storage and handling
• VAICO V10-4691 for Volkswagen crankcase ventilation repair

Detailed Description

The VAICO V10-4691 is an engine crankcase breather hose used in the crankcase ventilation system, where it helps route vapors through the emission control circuit. Its compact size and listed measurements make it a targeted replacement for service work on the Volkswagen Passat. This part number, V10-4691, is also useful when matching an existing hose by reference during maintenance or repair.

Fits 2003-2005 Volkswagen Passat, N/A. Fits 2002 Volkswagen Passat, N/A, from 3B-2-000 001. This part cross-references OE-style part numbers 078 103 223 E and 78 103 223 E for the same application.

What It Helps Address

• Cracked or deteriorated crankcase breather hose material
• Vacuum leaks in the crankcase ventilation circuit
• Oil vapor routing problems in the emission control system
• Rough idle concerns related to breather hose leakage
• Inspection failures tied to crankcase ventilation faults

Installation Notes and Tips

Verify the hose dimensions and OE reference before installation, especially on Volkswagen Passat models with build-specific breakpoints. Confirm routing, connection points, and surrounding components in the crankcase ventilation system before final assembly. The fitment data lists N/A for position, so match the hose to the existing application layout rather than a side-specific location.

Quality Assurance

VAICO parts are cataloged for European vehicle service applications, and this breather hose is identified with the V10-4691 part number for accurate ordering and fitment verification. Use the OE cross-reference and vehicle build information to confirm the correct replacement for your Volkswagen Passat.