Vaico V10-4631 Engine Crankcase Breather Hose

Engine Crankcase Breather Hose for Audi and Volkswagen

The Vaico V10-4631 engine crankcase breather hose is an aftermarket emission control component for crankcase ventilation service. It is built to the listed dimensions of 100 mm length and 30.5 mm height/width, with an angled hose design noted in fitment for select Audi A4, Audi A4 Quattro, and Volkswagen Passat applications.

VAICO is the brand line used for OE-style replacement parts, and this hose follows that approach with application-specific fitment for vehicles that use the referenced crankcase ventilation routing. The V10-4631 part number is also listed for cross-reference use in parts lookup and catalog matching.

Key Features

• Engine crankcase breather hose for the crankcase ventilation system
• Dimensions: 100 mm length, 30.5 mm height, and 30.5 mm width
• Angled hose configuration noted for the listed applications
• Aftermarket replacement for select Audi A4 and Audi A4 Quattro models
• Also listed for Volkswagen Passat fitment
• Part number: V10-4631

Fitment Details

• Fits 2000-2006 Audi A4, N/A. Grade: Aftermarket; With angled hose; VAICO
• Fits 2000-2005 Audi A4 Quattro, N/A. Grade: Aftermarket; With angled hose; VAICO
• Fits 2000-2005 Volkswagen Passat, N/A. Grade: Aftermarket; With angled hose; VAICO

This part cross-references OE-style part numbers 058 133 785 B and 58 133 785 B for the same application.

What It Helps Address

• Cracked or split crankcase breather hose routing
• Vacuum leaks in the crankcase ventilation path
• Oil vapor flow issues caused by damaged hose material
• Improper ventilation connection at the engine breather circuit
• Fitment replacement needs for Audi A4, Audi A4 Quattro, and Volkswagen Passat service

Installation Notes and Tips

Verify the hose shape, angled connection, and dimensions against the removed part before installation. Confirm the vehicle’s model year and crankcase ventilation layout for Audi A4, Audi A4 Quattro, or Volkswagen Passat applications, since the listed fitment is specific to the years shown. Use the V10-4631 part number and the OE cross-reference numbers when matching by catalog or VIN-based lookup.

Quality Assurance

VAICO aftermarket parts are cataloged for application-specific replacement use in emission control and crankcase ventilation service. This listing includes expanded fitment data and OE cross-reference numbers to support accurate part matching for the correct Audi and Volkswagen applications.