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Porsche > Panamera 970 MK2 (2014-2016) > 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16 > Engine Rebuild Parts > Oil System Parts >

Breather Pipes

Breather Pipes

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DISPLAYING 1 to 4 (of 4 products)
Engine crankcase vent breather valve kit. Porsche 970.2 Panamera S 3.0L 2014-16 - 94610723077, 94610722977, 94610724075, 94610723975
2
Engine crankcase vent breather valve kit. Porsche 970.2 Panamera S 3.0L 2014-16
BREATHERHOSES970-2.S.OEM
Product Information
Product Information
Engine crankcase vent breather valve kit.
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
94610723077
94610722977
94610724075
94610723975

The product you are viewing cross references to these numbers
Bracket For Crankcase Breather Pipe. Porsche 92A Cayenne / 95B Macan / 970 Panamera 2010-18 - 94610702976, 94610702975
3
Bracket For Crankcase Breather Pipe. Porsche 92A Cayenne / 95B Macan / 970 Panamera 2010-18
Special Order item
94610702976
Product Information
Product Information
Bracket For Crankcase Breather Pipe. 

Fits:
Porsche 92A Cayenne (958) 3.6L Petrol 2011>>2018
Cars With Engine Codes:
CURA / CUR / CXZA / CXZ

Porsche 95B.1 Macan S / GTS 3.0L Petrol MKI 2014>>2018
Porsche 95B.1 Macan Turbo 3.6L MKI 2014>>2018
Cars With Engine Codes:
CTMA / CTM / CTLA / CTL / DCNA / DCN / DHKA / DHK

Porsche 970.2 Panamera S / 4S Turbo 3.0L V6 MKII 2014>>2016
Cars With Engine Codes:
CWDA / CWD / CWFA / CWF

Diagram Ref No 8

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94610702976
94610702976
94610702975

The product you are viewing cross references to these numbers
Non Return Valve Crankcase Oil Breather. Porsche 95B Macan / 958 Cayenne / 970.2 Panamera - 94610723077, 94610722977
6
Non Return Valve Crankcase Oil Breather. Porsche 95B Macan / 958 Cayenne / 970.2 Panamera
Special Order item
9461072
Product Information
Product Information
Non Return Valve Crankcase Oil Breather. 

Fits:
Porsche 95B Macan S / GTS / Turbo 2014>>2018
Porsche 958 Cayenne / GTS 3.6L 2015>>2018
Porsche 970.2 Panamera / S 3.0L 2014>>2016

Diagram Ref No 1 And 2


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9461072
94610723077
94610722977

The product you are viewing cross references to these numbers
Non Return Valve Crankcase Oil Breather. Porsche 95B Macan / 958 Cayenne / 970.2 Panamera - 94610723077, 94610722977 - A1211142, A1211139
3
Non Return Valve Crankcase Oil Breather. Porsche 95B Macan / 958 Cayenne / 970.2 Panamera
9461072
Product Information
Product Information

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
Diagram Ref No 1 and 2

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
94610723077
94610722977

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 4 products)
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About Breather Pipes

Engine Oil System Breather Pipes – Precision Ventilation for Porsche Performance

The engine oil breather system plays a crucial role in maintaining internal pressure balance, oil circulation, and overall engine health. The breather pipes allow gases, vapour, and excess pressure to escape from the crankcase, preventing oil contamination, leaks, and performance loss.

At Design911, we supply a comprehensive selection of oil system breather pipes and ventilation components designed for Porsche engines across all generations. Built from high-quality, oil- and heat-resistant materials, our breather pipes are engineered for long service life, durability, and a direct-fit installation — ensuring your Porsche continues to run smoothly under all driving conditions.

Whether you’re maintaining a daily-driven 911 or restoring a classic air-cooled model, our breather pipes help safeguard your engine’s lubrication system and performance.

What Do Engine Oil Breather Pipes Do?

Oil breather pipes are essential to the proper function of your Porsche’s oil system. They manage pressure and vapour within the crankcase, ensuring oil flow remains consistent and clean.

Core Functions:

  • Vent crankcase pressure to maintain oil system stability.
  • Prevent oil leaks by balancing internal engine pressure.
  • Reduce contamination by separating oil vapour from blow-by gases.
  • Improve efficiency by maintaining clean airflow and optimal oil return.

Properly functioning breather pipes ensure your Porsche’s engine stays free of excessive pressure and sludge build-up, promoting smooth operation and extended engine life.

Why Do Oil Breather Pipes Fail?

Over time, breather pipes are exposed to intense heat, oil vapour, and pressure changes that can cause deterioration and leaks.

Common Causes of Failure Include:

  • Cracking or hardening of rubber or plastic due to heat cycles.
  • Oil residue build-up, leading to restricted airflow.
  • Blockages caused by sludge or carbon deposits.
  • Loose fittings or seals allowing air or oil leaks.
  • Age-related wear in high-mileage or older engines.

Symptoms of failing breather pipes include oil leaks, rough idling, increased crankcase pressure, or smoke from the exhaust — all signs that the ventilation system is compromised.

Why Replace with Precision-Engineered Breather Pipes?

Replacing worn or damaged breather pipes is essential for maintaining optimal oil pressure and engine performance. Our precision-fit, high-durability replacements are designed to restore proper ventilation and prevent costly oil-related issues.

Key Benefits:

  • Restores optimal crankcase ventilation and pressure control.
  • Prevents oil leaks and blow-by contamination.
  • Improves idle stability and engine efficiency.
  • Constructed from heat- and oil-resistant materials.
  • Direct-fit compatibility for classic and modern Porsche engines.
  • Ideal for regular maintenance or full engine rebuilds.

These parts are engineered to deliver long-term reliability and protect your Porsche’s engine from unnecessary wear.

Highlights:

  • Precision-engineered oil breather pipes for Porsche engines.
  • High-quality materials for maximum durability and heat resistance.
  • Direct-fit replacements ensuring leak-free performance.
  • Improves oil system efficiency and longevity.
  • Compatible with air-cooled and water-cooled Porsche models.
  • Perfect for rebuilds, maintenance, or performance upgrades.

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