058 103 221E – Breather Hose

Description

The 058 103 221E breather hose restores the crankcase ventilation path on compatible engines. This molded hose routes crankcase vapors through the ventilation system, helping the engine maintain correct internal pressure and emissions control.

Over time, engine heat and oil vapor can cause the original hose to become brittle, crack, or split. Once the hose loses its seal, unmetered air can enter the intake system and create vacuum-related performance issues.

Why the 058 103 221E Breather Hose Matters

A properly sealed crankcase ventilation system supports stable idle quality, accurate air-fuel calculations, and reliable engine operation. When a cracked breather hose introduces a vacuum leak, the engine may run rough, hesitate, or trigger the check engine light.

Replacing the damaged hose restores the intended ventilation path. In addition, the molded design follows the original routing and connection geometry, allowing direct installation without modifications.

Signs Your Breather Hose Needs Replacing

Inspect the crankcase ventilation system when you notice any of the following symptoms:

• Rough, unstable, or high engine idle.

• Check engine light with lean-mixture or vacuum-related faults.

• Hissing or whistling noises from the engine bay.

• Visible splits, cracks, or oil residue along the hose.

• Brittle plastic or rubber that breaks during inspection.

• Reduced throttle response or inconsistent engine performance.

First, inspect nearby PCV hoses, connectors, and check valves. Because these components face the same heat and oil-vapor exposure, several parts may require attention at the same time.

Key Features

• OE Part Number: 058 103 221 E

• Function: Restores the crankcase breather path and helps control engine pressure.

• Construction: Molded hose engineered to resist cracking from engine heat and oil vapor.

• Direct Fit: Matches the original hose routing and end connections.

• Direct Replacement: Installs without modifications.

• Cross Reference: URO-013355

Compatibility & Applications

Always verify fitment by VIN before ordering.

Cross Reference Numbers

• 058 103 221 B

• 058 103 221 D

• 058 103 221 E

• URO-013355

Additional information