Non Return Valve Crankcase Oil Breather. Porsche 95B Macan / 958 Cayenne / 970.2 Panamera  ❭  9461072

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Related, superseded, cross reference or alternative numbers for comparison.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

The product you are viewing cross references to these numbers

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

The product you are viewing cross references to these numbers