Breather hose. Porsche 993 C2 / C4 / RS 1995-1998  ❭  99320714303

Breather hose. From oil tank.
This OE Match breather hose is a replacement engine ventilation hose used within the Porsche 993 oil and crankcase breather system. It is designed to match the original-style fitment and function for vehicles where part number 99320714303 is specified.

Fits:
Porsche 993 C2 / C4 3.6L 1996 - 1998
Porsche 993 Carrera RS 3.75L 1995 - 1996

Diagram Ref No 52

The breather hose allows crankcase vapours and oil mist to be routed correctly through the engine ventilation system. A properly sealed breather hose helps prevent vacuum leaks, oil vapour escape, and poor engine running caused by damaged or split ventilation hoses.

Functions
• Replaces the engine breather hose
• Supports crankcase ventilation system operation
• Helps route oil vapour and crankcase gases correctly
• Helps prevent vacuum leaks and oil mist escape
• Supports smooth idle and reliable engine performance
• Suitable for engine service, oil leak repair, or restoration work
• OE Match replacement for Porsche 993 breather system maintenance.

Why Replace This Part?
Breather hoses can harden, crack, split, collapse, or become oil-soaked due to age, heat, oil vapour exposure, and engine bay conditions. A damaged hose may cause rough idle, vacuum leaks, oil smell, oil mist residue, poor running, or incorrect crankcase ventilation. Replacing the hose helps restore correct breather system function.

When to Replace This Part
•  Breather hose is cracked, brittle, split, or leaking
•  Oil vapour smell or oil mist residue is present
•  Rough idle or vacuum leak symptoms are detected
•  Engine breather system service is being carried out
•  Oil leak investigation or engine bay restoration is in progress
•  Hose has become soft, swollen, collapsed, or loose.

Where it fits on the car
This hose fits within the engine crankcase ventilation / oil breather system on Porsche 993 models.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99320714303

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