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Breather hose. Oil reservoir to connector. Porsche 993 C2 / C4 >>95 ❭ 99320715082
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97

Fits:
Porsche 993 Carrera 2 / Carrera 4 >>1995
Engine type: 6405 / 6406 / 6407 / 6408
Click 'Zoom in' for large parts diagram.
Diagram ref no 37
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99320715082
The product you are viewing cross references to these numbers
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97

Fits:
Porsche 993 Turbo 1995-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 37
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99320715053
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09

Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 986 Boxster - 1997 to 2004
Porsche 996 - 1997 to 2005
Porsche 997.1 - 2005 to 2008
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99951255400
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
The 99320714903 is a vent or breather hose - also referred to as an oil tank breather hose or crankcase vent hose - specifically designed for Porsche 911 “993” models. Its primary role is to equalize pressure within the oil tank and crankcase by safely channeling oil vapors and gases. This prevents excessive pressure that could cause oil leaks, foaming, or oil being forced past seals and gaskets, while also helping manage emissions by directing vapors correctly.
Fits:
Porsche 993 Carrera 2 / Carrera 4 1994 - 1997
Porsche 993 Carrera S / Carrera 4S 1994 - 1997
Porsche 993 turbo / GT2 1994 - 1997
Diagram ref no 33
Replacing this hose matters for several reasons:
• If the hose ages, cracks, gets brittle, or is blocked, it can’t vent properly. This may lead to pressure build-up in the oil tank/crankcase
• A faulty hose can cause oil leaks through seals or gaskets, or force oil out of vent points
• It can lead to poor engine performance or oil foaming, which in turn risks oil starvation or damage, especially under heavy load or high temperature
• Emissions issues may result: the engine may throw codes, or oil vapors may be vented where they shouldn’t, failing emission checks
• For older cars, these hoses degrade over time (rubber/hoses hardened by heat, oil exposure); preventative replacement helps avoid breakdowns.
This part often supersedes earlier versions (99320714901 and 99320714902), making it the updated replacement in many cases.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99320714903
The product you are viewing cross references to these numbers
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