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Breather Pipes
By OE Match
- 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
Engine crankcase vent breather valve Kit
Crankcase Breather Kit Overview The crankcase breather kit includes the breather valves (also called the air/oil separator or PCV valve) and the breather hoses. These components are typically made of plastic, making them prone to cracking or failure over time. Replacing or maintaining this system proactively improves engine reliability and ensures optimal performance.
Signs of a failing crankcase breather system include air or oil leaks, fouled spark plugs, or blue smoke from the exhaust. If you notice any of these symptoms, inspect the breather system and replace components as needed.
Fits:
- Porsche Macan S Petrol 3.0L V6 340Bhp
- Porsche Macan GTS Petrol 3.0L V6 360Bhp
- Porsche Macan Turbo 3.6L V6 400Bhp
Engine Crankcase Breather Hose Kit
The crankcase breather hose is a key part of the engine’s positive crankcase ventilation (PCV) system. It channels pressurized air from the engine crankcase to the PCV valve (air/oil separator). The PCV valve captures and removes oil vapors, draining them back into the engine while sending the remaining pressurized air to the intake for combustion.
Positive crankcase pressure naturally develops during engine operation. Because the hose is constantly exposed to heat, pressure, and oil vapors, it is one of the most common failure points in the PCV system. A damaged or worn hose can impact engine performance, emissions compliance, and overall reliability.
Common Crankcase Breather Hose Failure Symptoms
Cracks, breaks, or leaks: Constant exposure to heat, pressure, and oil vapors can degrade the plastic or rubber, causing air leaks. External damage can also contribute.
Broken connectors or clips: Plastic connectors and securing clips may become brittle over time, breaking during removal or routine maintenance.
Holes or splits in the hose: Soft rubber or brittle plastic can develop visible splits or holes, often accompanied by other issues listed below.
Check Engine Light (CEL): Excess unmetered air from a failed hose can trigger an air intake leak fault or related diagnostic codes.
Engine misfire: Severe air leaks can cause rough running or misfires, a common side effect of a faulty hose or PCV valve.
Oil residue: Escaping vapors often leave visible oil on the hose, engine block, or surrounding components. In severe cases, burnt oil may be noticeable, and the area may require degreasing to locate the source.
Maintaining a healthy crankcase breather system is essential for engine longevity, smooth operation, and proper emissions control.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94610723933KIT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
