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Breather Pipes
By OE Match
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
This Engine Crankcase Vent Breather Valve Kit is a full replacement set designed to service the crankcase ventilation system on the Porsche 970.2 Panamera S 3.0L (model years 2014–2016). It includes OE Match vent valves and breather hoses, along with genuine Porsche O-rings - providing a complete, direct-fit solution for maintaining proper crankcase pressure control.
Fits:
Porsche 970.2 Panamera S 3.0L 2014 - 2016
* engine code: CWDA,CWD, CWFA,CWF
Diagram ref no 1, 2, 3, 4, 5 and 7
The crankcase ventilation system regulates the internal pressure and gases generated during engine operation. This kit supplies all essential components required to replace worn or failing crankcase vent valves, hoses, and associated seals. The included parts are engineered to mirror factory fitment and performance, restoring proper crankcase breather function and helping prevent oil leaks, performance issues, and check-engine codes.
Kit Components:
1x Crankcase oil breather non-return valve – 94610723077 (OE Match)
1x Crankcase oil breather non-return valve – 94610722977 (OE Match)
1x Breather line, Left – 94610724075 (OE Match)
1x Breather line, Right – 94610723975 (OE Match)
2x Crankcase vent valve o-ring – 99970767740 (Genuine Porsche)
2x Crankcase vent valve o-ring – 99970767741 (Genuine Porsche)
This kit renews the crankcase ventilation pathway, which is essential for relieving pressure and removing blow-by gases from the engine’s crankcase. Efficient venting helps the engine maintain optimal performance, reduces oil contamination, and prevents pressure-related seal failures. Replacing aging or failed vent valves, hoses, and seals helps eliminate vacuum leaks, oil leaks, rough idling, and faulty diagnostic codes related to crankcase breather circulation.
Over time, crankcase vent valves and hoses can become clogged with oil residue, harden, crack, or lose sealing effectiveness. Faulty breather valves commonly lead to:
• Poor idle quality or stalling
• Oil leaks around the valve cover or intake
• Increased engine blow-by pressure
• Emission control malfunctions
• Malfunction Indicator Lamp (MIL) codes related to crankcase vent system
Installing a complete replacement kit with OE Match components and genuine Porsche seals and O-rings restores proper function, prevents costly oil leaks, and helps maintain engine performance and emission compliance.
Replace this crankcase vent breather kit if you experience:
• Oil visible around vent valve housings
• Rough idle or hesitation upon acceleration
• Engine warning codes related to crankcase ventilation
• Noticeable vacuum leaks or whistling sounds from the engine bay
• As part of preventive maintenance at high mileage
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BREATHERHOSES970-2.S.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 970.1 Panamera S V8 4.8L 2009-13
- Porsche 970.1 Panamera 4S V8 4.8L 2009-13
- Porsche 970.1 Panamera GTS V8 4.8L 2011-13
- Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
The Breather Line for Crankcase Housing is a OE MATCH engine ventilation component designed to regulate crankcase pressure and route blow-by gases safely through the Positive Crankcase Ventilation (PCV) system. This hose connects the crankcase housing to the appropriate intake or separator components, ensuring balanced airflow and controlled emissions.
Fits:
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 970.1 Panamera S V8 4.8L 2009-13
- Porsche 970.1 Panamera 4S V8 4.8L 2009-13
- Porsche 970.1 Panamera GTS V8 4.8L 2011-13
- Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
Diagram Ref No 6
What This Product Does:
- Relieving excess crankcase pressure
- Routing blow-by gases back into the intake system
- Supporting correct PCV system function
- Reducing oil vapour contamination in the intake tract
- Helping prevent sludge build-up and gasket stress
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 noises (vacuum leak)
- Excessive exhaust smoke
- Oil residue around breather or intake connections
Why Replacement Matters:
- Restore proper crankcase ventilation
- Prevent oil leaks and vacuum-related issues
- 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.
94810724720
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Non-Return Valve – Crankcase Oil Breather
The crankcase oil breather non-return valves is an
essential part of your Porsche’s engine ventilation system. Designed to OEM
specifications, they regulate crankcase pressure, prevent oil vapour backflow,
and ensure smooth, efficient engine operation. Replacing both valves together
restores proper crankcase breathing and protects your engine from leaks and
excess oil consumption.
Fits:
- Porsche Cayenne V6 3.6L Petrol 300Hp
- Porsche Panamera S V6 Turbo 3.0L 2WD (420Hp)
- Porsche Panamera S V6 Turbo 3.0L 2WD Executive
- Porsche Panamera 4S V6 Turbo 3.0L 4WD (420Hp)
- Porsche Panamera 4S V6 Turbo 3.0L 4WD Executive
- Porsche Macan S Petrol 3.0L V6 340Bhp
- Porsche Macan GTS Petrol 3.0L V6 360Bhp
- Porsche Macan Turbo 3.6L V6 400Bhp
What the Non Return Valves Do
- Maintain Correct Pressure: Allow gases to escape while preventing backflow into the crankcase.
- Improve Engine Efficiency: Reduce oil vapour re-entry, helping cleaner combustion.
- Protect Components: Prevent pressure build-up that can damage seals and gaskets.
Symptoms of Faulty Breather Valves
- Excessive oil consumption.
- Blue smoke from the exhaust.
- Oil leaks around gaskets and seals.
- Rough idle, misfires, or poor performance.
- Strong smell of oil fumes in the engine bay or cabin.
Common Reasons for Failure
- Oil Sludge & Contamination: Causes the valve to stick open or closed.
- Rubber & Spring Wear: Degradation over time reduces effectiveness.
- Lack of Maintenance: Old oil accelerates valve failure.
- High Mileage Stress: Heat cycles and pressure changes weaken components.
Why Replace?
Restores proper crankcase ventilation.
Prevents oil leaks and excess pressure in the engine.
Reduces harmful emissions and oil consumption.
Protects seals, gaskets, and other critical engine parts.
Improves reliability, performance, and long-term durability.
Why Buy from Design 911?
- Specialist Supplier: We are Porsche parts experts with years of experience.
- OEM Quality & Fitment: Parts meet or exceed original specifications.
- Trusted Worldwide: Thousands of Porsche owners and workshops rely on us.
- Comprehensive Support: Expert advice, fast shipping, and hassle-free service.
- One-Stop Shop: Whether it’s engine, body, or interior components, Design 911 has you covered.
Ideal For: Replacing worn crankcase valves during servicing or resolving oil consumption, leaks, or performance issues.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9461072
The product you are viewing cross references to these numbers
OEMatch Breather Pipes — Fit, Function, Confidence
Breather pipes and crankcase ventilation parts for Porsche models manage oil vapour and internal pressure to protect lubrication and reduce leaks. OEMatch offers a focused selection of hoses, separators and seals suited to Porsche applications, covering routine maintenance and rebuild requirements.
Available Types
- Flexible breather hoses and oil vapour pipes
- Oil separator and catch can assemblies
- Crankcase vent hoses and connecting pipes
- Grommets, seals and mounting fittings
Understanding OEMatch Breather Pipes
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original breather pipes.
OE (Original Equipment) refers to parts matching original specifications for the breather pipes and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM breather pipes engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Breather pipes route crankcase vapour and blow-by gases away from the engine, helping to separate oil from vapour and return condensate to the sump or collection points. Correct ventilation reduces contamination, prevents pressure build-up and supports stable idling and consistent oil return across Porsche engines.
Benefits Include
- Restores correct crankcase ventilation and pressure control
- Helps reduce oil leaks and visible smoke
- Limits oil contamination and sludge formation
- Supports stable idling and efficient oil return
Why Breather Pipes Wear and Fail
- Heat-related hardening, cracking or brittleness of rubber and plastic hoses
- Oil and carbon build-up causing blockages or restricted flow
- Degraded or collapsed internal liners and collapsed passages
- Loose, hardened or damaged grommets and sealing fittings
The Importance of Replacing with OEMatch Breather Pipes
Keeping breather pipes in good condition prevents oil loss and contamination that can accelerate wear in Porsche engines. Replacing degraded hoses and seals reduces the risk of pressure-related faults and leaks, helping maintain reliable lubrication, consistent idling and longer component life when combined with regular oil and filter care.
Advantages
- Manufactured for oil and heat resistance appropriate to engine conditions
- Produced to original-spec dimensions for consistent performance
- Suitable for air-cooled and water-cooled Porsche engine layouts
