do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Oil Separators & Vent lines
The Oil Separator, Left is a genuine OEM Porsche engine component designed to regulate crankcase ventilation by separating oil vapour from blow-by gases before they are recirculated into the intake system. Positioned on the left side of the engine, this unit ensures clean airflow while preventing excess oil from entering the combustion process.
Fits:
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
Diagram Ref No 1
What This Product Does:
- Separates oil vapour from crankcase gases
- Prevents oil from entering the intake system
- Maintains proper crankcase ventilation
- Reduces oil consumption and emissions
- Supports efficient and stable engine performance
Symptoms Of Wear Or Failure:
- Excessive oil consumption
- Blue smoke from the exhaust (burning oil)
- Rough idle or engine misfires
- Whistling or suction noises from the engine
- Oil residue in intake components
- Check engine light related to crankcase ventilation faults
Why Replacement Matters:
- Prevents oil contamination of the intake system
- Restores proper engine ventilation and balance
- Reduces emissions and improves efficiency
- Protects engine components from oil buildup and damage
- Maintains smooth and reliable engine operation
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAB103495A
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
Shop Securely
12 Month Warranty
Worldwide Delivery
This Oil Separator, Left is a OE MATCH Porsche 971.1 / 971.2 Panamera engine component designed to regulate crankcase ventilation by separating oil vapour from blow-by gases before they are recirculated into the intake system. Positioned on the left side of the engine, this unit ensures clean airflow while preventing excess oil from entering the combustion process.
Fits:
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
What This Product Does:
- Separates oil vapour from crankcase gases
- Prevents oil from entering the intake system
- Maintains proper crankcase ventilation
- Reduces oil consumption and emissions
- Supports efficient and stable engine performance
Symptoms Of Wear Or Failure:
- Excessive oil consumption
- Blue smoke from the exhaust (burning oil)
- Rough idle or engine misfires
- Whistling or suction noises from the engine
- Oil residue in intake components
- Check engine light related to crankcase ventilation faults
Why Replacement Matters:
- Prevents oil contamination of the intake system
- Restores proper engine ventilation and balance
- Reduces emissions and improves efficiency
- Protects engine components from oil buildup and damage
- Maintains smooth and reliable engine operation
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAB103495A
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
Shop Securely
12 Month Warranty
Worldwide Delivery
The Oil Separator, Right is a genuine OEM Porsche engine component designed to manage crankcase ventilation by separating oil vapour from blow-by gases before they are recirculated into the intake system. Mounted on the right-hand side of the engine, this unit helps ensure that only clean air is returned to the combustion process.
Fits:
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
Diagram Ref No 8
What This Product Does:
- Separates oil vapour from crankcase gases
- Prevents oil from entering the intake system
- Maintains proper crankcase ventilation (PCV function)
- Reduces oil consumption and emissions
- Supports smooth and efficient engine performance
Symptoms Of Wear Or Failure:
- Excessive oil consumption
- Blue smoke from the exhaust (oil burning)
- Rough idle or engine misfires
- Whistling or suction noises from the engine
- Oil residue in intake components
- Check engine light related to ventilation system faults
Why Replacement Matters:
- Prevents oil contamination of the intake system
- Restores proper crankcase ventilation
- Improves engine efficiency and reduces emissions
- Protects internal engine components from oil buildup
- Ensures smooth, reliable engine operation
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A710346402
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
Shop Securely
12 Month Warranty
Worldwide Delivery
This Oil Separator, Right is a OE MATCH Porsche 971.1 / 971.2 Panamera engine component designed to manage crankcase ventilation by separating oil vapour from blow-by gases before they are recirculated into the intake system. Mounted on the right-hand side of the engine, this unit helps ensure that only clean air is returned to the combustion process.
Fits:
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
Diagram Ref No 8
What This Product Does:
- Separates oil vapour from crankcase gases
- Prevents oil from entering the intake system
- Maintains proper crankcase ventilation (PCV function)
- Reduces oil consumption and emissions
- Supports smooth and efficient engine performance
Symptoms Of Wear Or Failure:
- Excessive oil consumption
- Blue smoke from the exhaust (oil burning)
- Rough idle or engine misfires
- Whistling or suction noises from the engine
- Oil residue in intake components
- Check engine light related to ventilation system faults
Why Replacement Matters:
- Prevents oil contamination of the intake system
- Restores proper crankcase ventilation
- Improves engine efficiency and reduces emissions
- Protects internal engine components from oil buildup
- Ensures smooth, reliable engine operation
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A710346402
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
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.
.jpg){kind=link}
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed