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Related to Oil Separators & Vent lines for 996 (911) (1997-2005)
OE Match
OE Match
99610717550/1
Product Information
Also referred to as an oil separator hose or breather hose, this component plays a vital role in routing crankcase gases and oil vapours through the AOS system. This OE Match oil separator boot is a direct replacement part, manufactured to original specifications for precise fitment and long-term durability. It is installed between the air-oil separator and the crankcase, acting as a flexible connection that maintains a sealed system while accommodating engine movement.
Fits:
Porsche 987 Boxster 2.7L / 3.2L 2005 - 2008
Porsche 987C Cayman 2.7L / 3.4L 2005 - 2008
Porsche 996 Carrera 3.6L 2003 - 2005 (M96.03)
Porsche 997 Carrera 3.6L 2005 - 2008 COUPE / CABRIO (M96.05)
Diagram Ref No 10.
The boot allows crankcase gases to flow from the engine to the air-oil separator, where oil vapours are separated and returned to the engine while clean air is recirculated. If this hose fails or splits, it can lead to oil leaks, vacuum leaks, and poor engine performance.
Function
• Connects the air-oil separator to the crankcase
• Maintains sealed crankcase ventilation system
• Routes oil vapours for proper separation and recirculation
• Prevents oil leaks and vacuum loss
This component is essential for maintaining correct engine breathing and emissions performance.
Over time, the hose can become brittle, crack, or split due to heat and oil exposure. A failing hose can cause oil leaks, unmetered air entering the engine, and incorrect crankcase pressure. Replacing the boot ensures proper AOS system function, prevents oil contamination, and maintains smooth engine operation.
When to replace
• Oil leaks around engine or separator area
• Rough idle or vacuum-related issues
• Visible cracks or splits in hose
• Oil residue on engine components
• During AOS (air-oil separator) replacement
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610717550
The product you are viewing cross references to these numbers
Product Information
Replacement oil separator bootAlso referred to as an oil separator hose or breather hose, this component plays a vital role in routing crankcase gases and oil vapours through the AOS system. This OE Match oil separator boot is a direct replacement part, manufactured to original specifications for precise fitment and long-term durability. It is installed between the air-oil separator and the crankcase, acting as a flexible connection that maintains a sealed system while accommodating engine movement.
Fits:
Porsche 987 Boxster 2.7L / 3.2L 2005 - 2008
Porsche 987C Cayman 2.7L / 3.4L 2005 - 2008
Porsche 996 Carrera 3.6L 2003 - 2005 (M96.03)
Porsche 997 Carrera 3.6L 2005 - 2008 COUPE / CABRIO (M96.05)
Diagram Ref No 10.
The boot allows crankcase gases to flow from the engine to the air-oil separator, where oil vapours are separated and returned to the engine while clean air is recirculated. If this hose fails or splits, it can lead to oil leaks, vacuum leaks, and poor engine performance.
Function
• Connects the air-oil separator to the crankcase
• Maintains sealed crankcase ventilation system
• Routes oil vapours for proper separation and recirculation
• Prevents oil leaks and vacuum loss
This component is essential for maintaining correct engine breathing and emissions performance.
Over time, the hose can become brittle, crack, or split due to heat and oil exposure. A failing hose can cause oil leaks, unmetered air entering the engine, and incorrect crankcase pressure. Replacing the boot ensures proper AOS system function, prevents oil contamination, and maintains smooth engine operation.
When to replace
• Oil leaks around engine or separator area
• Rough idle or vacuum-related issues
• Visible cracks or splits in hose
• Oil residue on engine components
• During AOS (air-oil separator) replacement
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610717550
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price: €14.50
In Stock - 24 Hour Dispatch
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12 Month Warranty
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99610723752
Product Information
Fits:
Porsche 996 1998-02 3.4L
Porsche Boxster 986
Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610723752
The product you are viewing cross references to these numbers
Product Information
Replacement oil separator boot.Fits:
Porsche 996 1998-02 3.4L
Porsche Boxster 986
Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610723752
99610723752
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Price: €18.17
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
Express Delivery
99610717550
Product Information
Fits:
Porsche 987 Boxster 2.7L / 3.2L 2005-08
Porsche 987C Cayman 2.7L / 3.4L 2005-08
Porsche 996 Carrera 3.6L 2003-05 (M96.03)
Porsche 997 Carrera 3.6L 2005-08 COUPE / CABRIO (M96.05)
Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610717550
The product you are viewing cross references to these numbers
Product Information
Replacement oil separator boot. Fits:
Porsche 987 Boxster 2.7L / 3.2L 2005-08
Porsche 987C Cayman 2.7L / 3.4L 2005-08
Porsche 996 Carrera 3.6L 2003-05 (M96.03)
Porsche 997 Carrera 3.6L 2005-08 COUPE / CABRIO (M96.05)
Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610717550
99610717550
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price: €27.69
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
Express Delivery
99610702652
Product Information
Fits:
Porsche 996 3.6L
Porsche 997 3.6L
Oil Separator. One of the most common failures in the Boxster or 996 is the Air/Oil Separator, also referred to as the AOS.
The AOS is basically a small diaphragm distillery which distills the minute amounts of oil mist in the crankcase, liquifies it and sends it back to the crankcase. The "clean" air is now sent into the air intake (after the throttle body) to be burned off by the engine.
When the AOS starts to fail it cannot separate all of the oil out of the mist and some liquid oil is sent to the air intake.
A few drops of oil is enough to generate the GREAT SMOKE BOMB for which our cars are famous for.
A big smoke bomb once in a while is completely normal, due to the architecture of the flat-6 engine, which may let a drop of oil flow into one of the combustion chambers sporadically.
Click pictrue for large parts diagram.
Diagram Ref No 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702652
The product you are viewing cross references to these numbers
Product Information
Oil Separator. One of the most common failures in the Boxster or 996 is the Air/Oil Separator, also referred to as the AOS.Fits:
Porsche 996 3.6L
Porsche 997 3.6L
Oil Separator. One of the most common failures in the Boxster or 996 is the Air/Oil Separator, also referred to as the AOS.
The AOS is basically a small diaphragm distillery which distills the minute amounts of oil mist in the crankcase, liquifies it and sends it back to the crankcase. The "clean" air is now sent into the air intake (after the throttle body) to be burned off by the engine.
When the AOS starts to fail it cannot separate all of the oil out of the mist and some liquid oil is sent to the air intake.
A few drops of oil is enough to generate the GREAT SMOKE BOMB for which our cars are famous for.
A big smoke bomb once in a while is completely normal, due to the architecture of the flat-6 engine, which may let a drop of oil flow into one of the combustion chambers sporadically.
Click pictrue for large parts diagram.
Diagram Ref No 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702652
99610702651
99610702650
99610702652
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
Price: €189.16
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12 Month Warranty
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