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Your Vehicle // Porsche // Cayenne 9PA1 (957) 2007-2010 // 957 Cayenne Turbo / Turbo S 4.8L 2007-10
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Oil Separators & Vent lines
Crankcase Ventilation Seal Kit
Keep your Porsche Cayenne's crankcase ventilation system properly sealed with this four-piece replacement seal kit.
Fits
- Porsche 957 Cayenne Turbo / Turbo S 4.8L, 2007–2010
Designed for the 4.8L V8 twin-turbo engine, the kit contains
the seals required to renew the relevant crankcase ventilation connections,
helping prevent unwanted air leaks and maintain correct engine breathing.
What Does It Do?
The seals create airtight connections within the crankcase ventilation system.
This system manages gases that escape past the piston rings during combustion, directing them through the engine breather and oil separation system before returning them to the intake.
The seals help prevent unwanted air entering the system and oil vapour escaping around the connections.
Why Are They Important?
A properly sealed ventilation system helps maintain correct crankcase pressure and reliable engine operation.
Deteriorated seals can contribute to:
- Air leaks around ventilation connections
- Rough or unstable engine idling
- Whistling or hissing noises
- Oil residue around breather components
- Engine management warning lights
These symptoms can also have other causes and should be diagnosed before replacing parts.
Why Do Crankcase Ventilation Seals Fail?
Over time, repeated heat cycles and exposure to oil vapour can cause the sealing material to harden, flatten or lose elasticity.
Seals may also become damaged when breather pipes or associated components are removed during engine maintenance.
When Should They Be Replaced?
Replacement is recommended when seals show cracking, deformation or signs of leakage.
Renewing the seals is also advisable when dismantling the relevant crankcase ventilation connections, particularly if the original seals are no longer serviceable.
Installation Notes
Clean the mating surfaces and inspect the breather connections for cracks or damage.
Fit the new seals correctly without twisting or pinching them. Check that all ventilation connections are securely seated after reassembly.
Key Features
- Complete kit containing 4 seals
- For Porsche 957 Cayenne Turbo / Turbo S 4.8L V8
- Helps maintain airtight crankcase ventilation connections
- Suitable for engine breather servicing and repairs
- Replaces aged, hardened or damaged seals
- Convenient four-piece replacement set
Porsche 957 Cayenne Turbo & Turbo S Crankcase
Ventilation Seals
The Porsche 957 Cayenne Turbo and Turbo S 4.8L V8 engines use a crankcase ventilation system to manage internal engine gases and oil vapour. Maintaining secure seals around the ventilation connections is important for correct system operation.
This four-piece crankcase ventilation seal kit, containing Porsche reference 94810743750, provides replacement sealing components for servicing the engine breather system and repairing deteriorated connections.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810743750KIT
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Fits:
Porsche 957 Cayenne Turbo / Turbo S 2007-2008
Porsche 957 Cayenne Turbo S / Turbo (with Enhanced performance engine) 2009-2010
Click 'Zoom in' for large parts diagram.
Diagram ref no 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810723552
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
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12 Month Warranty
Worldwide Delivery
Fits:
Porsche 957 Cayenne Turbo / Turbo S 2007-2008
Porsche 957 Cayenne Turbo S / Turbo (with Enhanced performance engine) 2009-2010
Click 'Zoom in' for large parts diagram.
Diagram ref no 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810723552
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 957 Cayenne turbo / turbo S -2007 to 2008
Porsche 957 Cayenne turbo S / turbo 2009 to 2010 (with Enhanced performance engine)
Diagram ref no 14
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810723652
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 957 Cayenne Turbo / Turbo S 2007-2008
Porsche 957 Cayenne Turbo S / Turbo (with Enhanced performance engine) 2009-2010
Click 'Zoom in' for large parts diagram.
Diagram ref no 14
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810723652
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 957 Cayenne Turbo / Turbo S 2007-10
Click 'Zoom in' for large parts diagram.
Diagram ref no 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810722951
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
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12 Month Warranty
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The Air / Oil Separator to Crankcase Vent Line is a OE MATCH engine ventilation component designed to connect the air/oil separator (AOS) to the crankcase ventilation system. This line allows separated crankcase gases to be routed correctly back into the intake system while helping prevent oil vapour from entering critical engine components.
Fits:
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Diagram Ref No 1
What This Product Does:
- Routing crankcase gases from the air/oil separator
- Supporting efficient oil vapour separation
- Maintaining proper crankcase pressure regulation
- Reducing oil contamination in the intake system
- Helping prevent sludge build-up inside the engine
Symptoms Of Wear Or Failure:
- Rough idle or unstable engine performance
- Check Engine Light illumination
- Increased oil consumption
- Oil leaks from seals or gaskets
- Whistling or hissing noises (vacuum leak)
- Excessive smoke from the exhaust
- Oil residue around breather or intake components
Why Replacement Matters:
- Restore correct PCV system operation
- Prevent oil leaks and pressure-related damage
- Improve engine performance and efficiency
- Protect intake components from oil contamination
- Avoid costly engine repairs
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810722951
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 957 Cayenne Turbo 4.8L V8 2007-10
Porsche 957 Cayenne Turbo S 4.8L V8 2007-10
Porsche 958-1 Cayenne Turbo 4.8L V8 2011-14
Porsche 958-1 Cayenne Turbo S 4.8L V8 2011-14
Porsche 958-2 Cayenne Turbo 4.8L V8 2015-18
Porsche 958-2 Cayenne Turbo S 4.8L V8 2015-18
Diagram ref. 6 - 957 Cayenne.
Diagram ref. 9 - 958 Cayenne.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510725150
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
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12 Month Warranty
Worldwide Delivery
Fits:
Porsche 957 Cayenne Turbo 4.8L V8 2007-10
Porsche 957 Cayenne Turbo S 4.8L V8 2007-10
Diagram ref. 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810724953
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
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12 Month Warranty
Worldwide Delivery
The Crankcase Vent / Breather Hose is a OE MATCH engine ventilation component designed to regulate crankcase pressure and support proper Positive Crankcase Ventilation (PCV) system operation. This hose routes blow-by gases from the crankcase back into the intake system, where they are safely reburned during combustion.
Fits:
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
Diagram Ref No 6
What This Product Does:
- Relieving excess crankcase pressure
- Routing blow-by gases into the intake system
- Supporting proper PCV system function
- Reducing oil vapour contamination
- Helping prevent sludge build-up inside the engine
Symptoms Of Wear Or Failure:
- Rough or unstable idle
- Check Engine Light illumination
- Oil leaks from engine seals or gaskets
- Increased oil consumption
- Whistling or hissing sounds (vacuum leak)
- Excessive exhaust smoke
- Oil residue around breather or intake connections
Why Replacement Matters:
- Restore proper crankcase pressure regulation
- Prevent oil leaks and vacuum-related issues
- Improve engine efficiency and performance
- Maintain emissions system integrity
- Avoid costly engine repairs
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510725150
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
Crankcase Ventilation Seal
Sold each
Fits
- Porsche 957 Cayenne Turbo / Turbo S 4.8L, 2007–2010
What This Product Does
The gasket closes a joint associated with the oil separator and crankcase breather assembly. An intact seal helps contain oil residue and vapour while limiting unintended air leakage at that connection. It is a sealing component, not a complete separator or breather line.
Functions
- Provides sealing at the associated ventilation joint.
- Helps contain crankcase vapour within its intended route.
- Limits seepage and unintended air entry where the components meet.
Technical Details
- Porsche genuine replacement component.
- Product identification: 94810743750.
- Diagram description: Seal; component also described as a gasket.
- Assembly coverage identifies models 4801 and 4851.
- The supplied seal row specifies model 4851.
- Diagram requirement for model 4851: four seals. This is an assembly quantity, not a stated pack quantity.
Symptoms of Fault
- Localised oily deposits at the sealing joint.
- A gasket showing brittleness, cracking or permanent compression.
- Air leakage detected around the breather connection.
- Uneven idling associated with a confirmed ventilation leak.
- An oily smell accompanied by deposits near adjacent connections.
These signs warrant inspection but do not identify this gasket as the cause on their own. Check nearby hoses, connections and the separator before choosing replacement parts.
Why Replacement Matters
Repeated heating and cooling, together with ageing and oil exposure, can affect a gasket's sealing ability. Renew a damaged or compressed seal during ventilation-system repairs rather than refitting it. Inspect the contact surfaces, breather pipes and retaining components at the same time; replacing the gasket alone will not correct damage elsewhere in the assembly.
FAQs
- Does this include a complete separator?
No. The product is a seal or gasket; associated ventilation components are separate items. - What does the diagram quantity mean?
The row records four seals against model 4851. Confirm how many your particular repair requires. - When should an existing gasket be renewed?
Replace it if inspection reveals hardening, distortion, contamination or damage following removal. - What should I check before selecting it?
Match 94810743750 to your vehicle identification number, engine specification and production year, retaining the diagram's model-specific note.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810743750
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
Sold Each.
x4 Required Per Car.
Fits:
Porsche 9PA1 Cayenne (957) 4.8L Turbo / Turbo S 2007>>2010
Cars With Engine Codes:
4851
Diagram Ref No 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810743550
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 957 Cayenne Turbo 4.8L 2007-10
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810724553
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
OE Match connecting vent line for the air/oil separators. This breather component forms part of the engine’s crankcase ventilation system.
Fits:
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Diagram Ref No 19
Check fitment for your specific vehicle (model, year, engine) before ordering.
What This Product Does
The line provides the connection linking the air/oil separators, allowing ventilation gases to pass through this part of the breather assembly. It is a connecting pipe, rather than an oil separator or non-return valve.
Functions
- Connects the air/oil separator assemblies.
- Provides a passage for crankcase ventilation gases.
- Supports the intended routing of the engine breather system.
Technical Details
- Brand: OE Match.
- Internal diagram description: breather line.
- Diagram engine/model identifier: 4851.
Symptoms of Fault
Inspection is appropriate if the line becomes brittle, develops cracks or shows oily deposits around its connections. Rough idling, unusual breather noises or increased oil use can also accompany ventilation faults, but do not establish that this line is the cause.
Why Replacement Matters
Renewing a damaged connecting line helps restore a sealed ventilation path. Check the neighbouring breather pipes, connections and separator assemblies during diagnosis rather than assuming every ventilation symptom requires this component.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810724553
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Shop Securely
12 Month Warranty
Worldwide Delivery
Oil Separators & Vent Lines – Maintain Clean Airflow and Engine Efficiency
The oil separator and vent line system plays a critical role in your Porsche’s crankcase ventilation process. By separating oil vapour from the engine’s blow-by gases, these components ensure only clean air is returned to the intake system — reducing emissions, preventing carbon build-up, and maintaining consistent engine performance.
At Design911, we stock a complete range of oil separators, breather hoses, and vent lines designed for Porsche engines of all generations. Manufactured from high-grade, heat- and oil-resistant materials, these components are built to handle the demands of high-performance driving, ensuring a tight seal, proper ventilation, and long-lasting reliability.
Whether you’re maintaining a daily-driven 911 or servicing a track-ready Cayman, our oil separators and vent lines help preserve your engine’s efficiency, longevity, and power output.
What Do Oil Separators & Vent Lines Do?
The oil separator and vent system controls crankcase pressure and removes oil vapour from the air circulating inside the engine.
Core Functions:
- Separate oil vapour from crankcase gases, keeping intake air clean.
- Prevent oil from entering the intake manifold or combustion chamber.
- Maintain stable crankcase pressure for efficient engine breathing.
- Reduce harmful emissions and extend engine life.
- Support consistent power delivery and smooth idle performance.
By ensuring clean ventilation and stable pressure, these components protect your Porsche’s engine from oil contamination and performance loss.
Why Do Oil Separators & Vent Lines Fail?
Over time, heat cycles, oil vapours, and pressure fluctuations cause these parts to degrade or clog, leading to poor ventilation and increased oil consumption.
- Common Causes of Failure Include:
- Clogged internal membranes in the separator.
- Cracked or brittle vent lines from heat and age.
- Oil leaks from worn seals or connections.
- Vacuum leaks, causing rough idling or poor throttle response.
- Build-up of sludge or condensation within breather hoses.
Typical symptoms include increased oil consumption, blue exhaust smoke, rough idle, or oil leaks around the intake area, all indicating the need for inspection or replacement.
Why Replace Components?
Replacing a faulty oil separator or vent line restores proper crankcase ventilation and prevents costly engine issues like carbon build-up or oil contamination. Our precision-engineered replacements are designed for accurate fitment and long-term durability, ensuring your Porsche operates efficiently.
Key Benefits:
- Restores clean airflow and stable crankcase pressure.
- Reduces oil leaks and smoke from the exhaust.
- Improves fuel efficiency and throttle response.
- Constructed from high-quality, heat- and oil-resistant materials.
- Direct-fit compatibility with Porsche engines.
- Ideal for maintenance, rebuilds, or performance tuning.
Upgrading or replacing your oil separator and vent lines is essential for maintaining your Porsche’s smooth performance and clean emissions system.
Highlights:
- High-quality Porsche oil separators, breather hoses, and vent lines.
- Ensures clean crankcase ventilation and stable engine pressure.
- Reduces oil leaks, smoke, and carbon build-up.
- Durable construction for long-term reliability.
- Direct-fit for Porsche 911, Cayman, Boxster, Panamera & more.
- Perfect for preventive maintenance or full engine rebuilds.
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