URO 058103221E Engine Crankcase Breather Hose

Engine Crankcase Breather Hose for Audi and Volkswagen

This URO engine crankcase breather hose restores crankcase ventilation flow after the original hose cracks, splits, or leaks. It is a molded replacement built for direct fitment on select Audi A4, Audi A4 Quattro, and Volkswagen Passat applications.

• Molded black hose for a direct replacement fit
• Length: 198
• End 1 inside diameter: 12.25
• End 2 inside diameter: 7.75
• High-quality material resists cracking from engine heat and oil vapor
• Guaranteed fitment for the listed applications
• Part number: 058103221E

Fitment and Application Details

Compatible With 1997-2002 Audi A4, N/A; 1997-2002 Audi A4 Quattro, N/A; 1998-2001 Volkswagen Passat, N/A. Also fits 2003 Audi A4, N/A, chassis range through # 8E-3-040000, and 2003 Audi A4 Quattro, N/A, chassis range through # 8E-3-040000. The URO 058103221E is a direct replacement for the OE-style crankcase breather hose used in these vehicles.

This part cross-references 058 103 221B and 058 103 221D for the same application.

What This Hose Helps Address

• Cracked or split crankcase breather hose
• Vacuum leaks caused by deteriorated ventilation tubing
• Restricted crankcase ventilation flow
• Hydrocarbon emission control issues related to hose failure
• Oil vapor damage to aging rubber components

Installation Notes

Inspect the surrounding crankcase ventilation components before installation and replace any damaged connectors or adjacent hoses as needed. Confirm the molded routing matches the original hose path and verify the end diameters before installation. For 2003 Audi A4 and Audi A4 Quattro models, confirm chassis number compatibility through 8E-3-040000.

Quality Assurance

URO backs this replacement hose with a 24 Month Unlimited Mileage Warranty. The hose is made from materials selected to resist cracking and splitting under engine heat and oil vapor exposure.