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Porsche // Cayman 718C (982C) 2017>> // Any
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- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
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
This kit is comprised of the following items:
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
The Genuine Porsche Air-Oil Separator is the factory-specified unit responsible for separating oil mist from crankcase blow-by gases on modern Porsche flat-6 engines. As part of the PCV system, it ensures clean ventilation, stable crankcase pressure, and proper oil control - critical for protecting the intake system and maintaining optimal engine performance.
Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 981 Boxster Spyder 2016>>
Porsche 982 Boxster GTS 4.0L 2017>>
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2014 2016
Porsche 981C Cayman GT4 2016>>
Porsche 982C Cayman GT4 4.0L 2017>>
Diagram ref no 16
A factory-original air-oil separator designed to filter blow-by vapours, remove oil mist, and maintain stable crankcase ventilation.
Sold individually. It is recommended to also inspect and, if necessary, replace associated hoses and seals when fitting a new separator to ensure full system integrity.
This AOS:
• Removes oil droplets and vapour from crankcase gases before they enter the intake
• Maintains correct crankcase vacuum and pressure balance
• Reduces oil consumption and prevents oil contamination in the intake tract
• Helps prevent carbon build-up, fouled sensors, and smoky exhaust
• Ensures emissions compliance and proper engine breathing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB115099A
The product you are viewing cross references to these numbers
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
Fits:
Porsche 982 Boxster 2017>>
Porsche 982C Cayman 2017>>
Diagram ref no 14
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PC115099B
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
A crankcase air-oil separator (AOS) that traps oil droplets and vapour from the engine’s blow-by gases and returns cleaned air to the intake system while keeping oil inside the engine’s lubrication system.
Sold individually. It is recommended to also inspect and, if necessary, replace associated hoses and seals when fitting a new separator to ensure full system integrity.
Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 981 Boxster Spyder 2016>>
Porsche 982 Boxster GTS 4.0L 2017>>
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2014 2016
Porsche 981C Cayman GT4 2016>>
Porsche 982C Cayman GT4 4.0L 2017>>
Diagram ref no 16
This air-oil separator is an replacement unit designed to filter crankcase blow-by vapours on Porsche engines, separating oil mist from the air before routing clean air back into the intake or ventilation system.
Over time AOS units degrade - internal baffles can become clogged, seals can fail, or plastic can crack due to heat cycles. A faulty or clogged separator may allow oil vapour into the intake, causing:
• Increased oil consumption and oil-soaked intake/tracks.
• Blue or grey smoke from exhaust, rough idle, misfires or poor running.
• Sludge or carbon buildup, fouled sensors, and potential engine damage.
Replacing with a correct fresh separator restores clean crankcase ventilation, keeps oil inside, and helps maintain reliable performance and engine health.
You should replace the air-oil separator when:
• You notice oil in the intake system, oil residue around intake or throttle body, or excessive oil consumption.
• The separator is showing signs of age: cracks, hardened plastic, degraded seals, or clogging.
• Your engine exhibits excessive smoke, rough idling, or misfires potentially related to intake contamination.
• Carrying out engine maintenance, PCV servicing, or installing new hoses/seals.
• The separator hasn’t been replaced for many years or high mileage - preventive maintenance helps avoid more serious issues.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB115099A
The product you are viewing cross references to these numbers
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 718 (982) Cayman GT4 RS 2019>>
Porsche 718 (982) Spyder RS 2019>>
Porsche 992 GT3 2021>>
*Please be advised, this part is not compatible with the GT3 RS & S/T.