Porsche Breather Hose – Engine – 911 (1984–1989) 930-207-386-01-OEM | OEM Crankcase Ventilation Hose

Ensure optimal engine performance and pressure balance with the Porsche Breather Hose (930-207-386-01). Designed specifically for Porsche 911 models from 1984 to 1989, this OEM-quality hose maintains proper crankcase ventilation by allowing air and oil vapors to circulate safely within the engine system.

Manufactured from durable, oil-resistant rubber, it withstands high temperatures and long-term exposure to engine fluids. This breather hose helps prevent oil leaks, excessive crankcase pressure, and sludge buildup, preserving the reliability and efficiency of Porsche’s air-cooled flat-six engines. Ideal for both maintenance and full engine restorations.

Key Features

• OEM Porsche Fit and Quality – Manufactured to factory specifications for seamless installation and reliable performance

• Maintains Crankcase Ventilation – Regulates airflow and prevents oil vapor buildup for cleaner engine operation

• Durable Construction – Reinforced rubber design resists heat, oil, and chemical degradation

• Prevents Oil Leaks and Pressure Issues – Ensures stable internal pressure within the crankcase system

• Direct Fit for Porsche 911 (1984–1989) – No modifications required for installation

• Long Service Life – Designed for extended durability under demanding air-cooled engine conditions

• Ideal for Maintenance or Restorations – Recommended during breather system overhauls or when replacing aging hoses

Frequently Asked Questions (FAQ)

1. What does the Porsche Breather Hose do?
It regulates crankcase pressure by allowing air and oil vapors to circulate back into the intake system, preventing oil leaks and maintaining engine balance.

2. Which Porsche models use this breather hose?
This OEM part fits Porsche 911 models produced between 1984 and 1989.

3. What are the signs of a failing breather hose?
Symptoms include oil leaks, poor idle performance, excessive crankcase pressure, or visible cracking in the hose material.

4. Is this hose made to OEM standards?
Yes, the 930-207-386-01 breather hose meets Porsche’s factory standards for fit, materials, and performance reliability.

5. Should I replace the breather hose during engine service?
Yes, replacing the hose during routine service or engine rebuilds ensures consistent ventilation and prevents future oil or pressure issues.