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Porsche > Cayman 718C (982C) 2017>> > Cayman S 718 2.5L Manual (350 Bhp) > Engine Rebuild Parts > Oil System Parts >

Breather Pipes

Breather Pipes

DISPLAYING 1 to 2 (of 2 products)
Breather Line Cylinders 3-4. Porsche 982 Boxster / Cayman 2017>> - 9A210752100
3
Breather Line Cylinders 3-4. Porsche 982 Boxster / Cayman 2017>>
Special Order item
9A210752100
Product Information
Product Information
Breather Line Cylinders 3-4.

The breather line for cylinders 3–4 is an integral component of the engine crankcase ventilation (PCV) system, designed to channel blow-by gases from specific cylinders back into the intake system. This process helps maintain proper pressure within the engine while reducing emissions and ensuring efficient combustion.

Fits:

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  • Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
  • Porsche Cayman 718 2.0L Manual (300 Bhp)
  • Porsche Cayman 718 2.0L PDK (300 Bhp)
  • Porsche Cayman S 718 2.5L Manual (350 Bhp)
  • Porsche Cayman S 718 2.5L PDK (350 Bhp)
  • Porsche Cayman T 718 2.0L Manual (300 Bhp)
  • Porsche Cayman T 718 2.0L PDK (300 Bhp)
  • Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
  • Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
  • Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
  • Porsche Cayman GTS 718 4.0L PDK (400 Bhp)

Diagram Ref No 2

What This Product Does:
  • Channels blow-by gases from cylinders 3–4 into the intake system
  • Maintains proper crankcase pressure balance
  • Supports efficient combustion and emissions control
  • Prevents buildup of harmful gases within the engine

Symptoms Of Wear Or Failure:
  • Cracked, brittle, or damaged hose
  • Oil leaks or residue around the breather line
  • Rough idle or engine running issues
  • Whistling noises caused by vacuum leaks
  • Increased oil consumption
  • Check engine light related to ventilation system faults

Why Replacement Matters:
  • Ensures correct crankcase pressure and airflow
  • Prevents vacuum leaks and oil leaks
  • Maintains optimal combustion and engine performance
  • Reduces emissions and oil consumption
  • Protects engine components from pressure-related damage



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Related, superseded, cross reference or alternative numbers for comparison.

9A210752100
9A210752100

The product you are viewing cross references to these numbers
Crankcase Housing Breather Line. Porsche 982 Boxster / Cayman 2017>> - 9A210753000
3
Crankcase Housing Breather Line. Porsche 982 Boxster / Cayman 2017>>
Special Order item
9A210753000
Product Information
Product Information
Crankcase Housing Breather Line.

The crankcase housing breather line is a key component of the engine crankcase ventilation system, designed to route blow-by gases from the crankcase back into the intake system. This process helps regulate internal engine pressure and ensures proper recirculation of gases for improved efficiency and emissions control.

Fits:

  • Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
  • Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
  • Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
  • Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
  • Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
  • Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
  • Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
  • Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
  • Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
  • Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
  • Porsche Cayman 718 2.0L Manual (300 Bhp)
  • Porsche Cayman 718 2.0L PDK (300 Bhp)
  • Porsche Cayman S 718 2.5L Manual (350 Bhp)
  • Porsche Cayman S 718 2.5L PDK (350 Bhp)
  • Porsche Cayman T 718 2.0L Manual (300 Bhp)
  • Porsche Cayman T 718 2.0L PDK (300 Bhp)
  • Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
  • Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
  • Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
  • Porsche Cayman GTS 718 4.0L PDK (400 Bhp)  

Diagram Ref No 4

What This Product Does:

  • Channels blow-by gases from the crankcase to the intake system
  • Regulates internal engine pressure
  • Prevents buildup of harmful gases within the engine
  • Supports efficient combustion and emissions control

Symptoms Of Wear Or Failure:
  • Oil leaks or residue around the breather line
  • Cracked or brittle hose material
  • Increased oil consumption
  • Rough idle or engine performance issues
  • Whistling noises caused by vacuum leaks
  • Check engine light related to ventilation system faults

Why Replacement Matters:
  • Ensures correct crankcase pressure regulation
  • Prevents oil leaks and vacuum leaks
  • Maintains proper airflow and combustion efficiency
  • Reduces emissions and oil consumption
  • Protects engine components from pressure-related damage



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

9A210753000
9A210753000

The product you are viewing cross references to these numbers
DISPLAYING 1 to 2 (of 2 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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