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Porsche > 924 (1977-1988) > 924 2.0L 1976-79 > Engine Rebuild Parts > Air Intake & Injection >

Hoses / Pipes / Sleeves

Hoses / Pipes / Sleeves

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DISPLAYING 1 to 7 (of 7 products)
Air Flow Meter Boot. 924 1976-85 - 047133367E
3
Air Flow Meter Boot. 924 1976-85
Special Order item
047133367E
Product Information
Product Information
Air Flow Meter Boot.
porsche

Fits:
Porsche 924 1976-85

Click 'Zoom in' for large parts diagram.
Diagram ref no 14

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Related, superseded, cross reference or alternative numbers for comparison.

047133367E
047133367E

The product you are viewing cross references to these numbers
Breather Pipe 15x2,5mm. Porsche 924/ 924S / 944 - N0203631 - PSE14
2
Breather Pipe 15x2,5mm. Porsche 924/ 924S / 944
N0203631/1
Product Information
Product Information

Breather Hose - 15 x 2.5mm 
Sold by the metre

High-quality breather hose with 15 x 2.5mm dimensions, designed for Porsche 924, 924S, and 944 models.

This versatile hose is used across multiple systems, including fuel tank breather, oil breather, and inlet breather applications, making it an essential component for maintaining proper ventilation and pressure balance within the engine and fuel systems.

Fits:

  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-85

Diagram ref no 6 

Engineered to OEM specifications, this hose offers durability, flexibility, and resistance to heat, oil, and fuel vapours, ensuring reliable performance in demanding engine bay environments. Ideal for maintenance, repair, or restoration of classic Porsche models.

Key Features

• 15 x 2.5mm breather hose specification
• Suitable for Porsche 924, 924S, and 944
• Part number N0203631
• Multi-use: fuel tank, oil, and inlet breather systems
• Resistant to heat, oil, and fuel vapours
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This breather hose serves multiple ventilation roles across the vehicle.

It helps to:
• Vent fuel tank vapours safely
• Regulate pressure in oil breather systems
• Maintain airflow within inlet systems
• Prevent pressure build-up in critical components
• Support efficient engine and fuel system operation

Why Replace Breather Hoses

Breather hoses are exposed to heat, oil, and vapours, leading to wear over time.

Common issues include:
• Cracking or splitting
• Oil or vapour leaks
• Hardening and loss of flexibility
• Reduced ventilation efficiency

Replacing worn hoses ensures proper system balance and prevents performance issues.



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

N0203631
N0203631

The product you are viewing cross references to these numbers
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928 - 9991810225B, 99918102251, 99923901840, 99918102250, 91112570300
2
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928
Special Order item
9991810225B
Product Information
Product Information

Air Hose 12 x 3,7mm – Brake Servo & Inlet Manifold 
Sold by the metre

High-quality air hose designed for multiple Porsche applications, including brake servo (brake booster) systems and inlet manifold connections.

This hose is used on Porsche 911, 924, 928, 964 Carrera 2, and also within the inlet manifold system on 964 and 993 models. It plays a critical role in maintaining vacuum pressure for braking assistance and ensuring proper airflow within the intake system.

Fits:

  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) GT2 1994-97
  • Porsche 993 (911) TURBO S 1994-97
  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86

Supplied per metre, this hose allows precise length replacement and flexible routing, making it ideal for maintenance, repair, or restoration of Porsche vacuum and intake systems. Manufactured to OEM specifications for durability and reliable performance.

Key Features

• Multi-purpose air hose for vacuum and intake systems
• Suitable for Porsche 911, 924, 928, 964, and 993
• Part number 9991810225B
• Used for brake servo and inlet manifold applications
• Sold per metre for custom lengths
• Resistant to heat and vacuum pressure
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose serves critical roles across multiple systems.

It helps to:
• Deliver vacuum pressure to the brake servo (booster)
• Maintain effective braking assistance
• Support airflow within the inlet manifold system
• Ensure stable engine operation and efficiency
• Prevent vacuum leaks that affect performance

Why Replace Air / Vacuum Hoses

Over time, hoses degrade due to heat and pressure cycles.

Common issues include:
• Cracking or splitting
• Vacuum leaks reducing brake efficiency
• Hardening and reduced flexibility
• Poor engine performance due to air leaks

Replacing worn hoses restores braking performance and engine efficiency.



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

9991810225B
9991810225B
99918102251
99923901840
99918102250
91112570300

The product you are viewing cross references to these numbers
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928 - 9991810225B, 99918102251, 99923901840, 99918102250, 91112570300 - PSU12B
2
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928
9991810225B/1
Product Information
Product Information

Air Hose 12 x 3,7mm – Brake Servo & Inlet Manifold 
Sold by the metre

High-quality air hose designed for multiple Porsche applications, including brake servo (brake booster) systems and inlet manifold connections.

This hose is used on Porsche 911, 924, 928, 964 Carrera 2, and also within the inlet manifold system on 964 and 993 models. It plays a critical role in maintaining vacuum pressure for braking assistance and ensuring proper airflow within the intake system.

Fits:

  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) GT2 1994-97
  • Porsche 993 (911) TURBO S 1994-97
  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86

Supplied per metre, this hose allows precise length replacement and flexible routing, making it ideal for maintenance, repair, or restoration of Porsche vacuum and intake systems. Manufactured to OEM specifications for durability and reliable performance.

Key Features

• Multi-purpose air hose for vacuum and intake systems
• Suitable for Porsche 911, 924, 928, 964, and 993
• Part number 9991810225B
• Used for brake servo and inlet manifold applications
• Sold per metre for custom lengths
• Resistant to heat and vacuum pressure
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose serves critical roles across multiple systems.

It helps to:
• Deliver vacuum pressure to the brake servo (booster)
• Maintain effective braking assistance
• Support airflow within the inlet manifold system
• Ensure stable engine operation and efficiency
• Prevent vacuum leaks that affect performance

Why Replace Air / Vacuum Hoses

Over time, hoses degrade due to heat and pressure cycles.

Common issues include:
• Cracking or splitting
• Vacuum leaks reducing brake efficiency
• Hardening and reduced flexibility
• Poor engine performance due to air leaks

Replacing worn hoses restores braking performance and engine efficiency.



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

9991810225B
9991810225B
99918102251
99923901840
99918102250
91112570300

The product you are viewing cross references to these numbers
Hose clamp, 12-22 mm. Porsche 928 / 924 / 944 / 968 - 99951255400
1
Hose clamp, 12-22 mm. Porsche 928 / 924 / 944 / 968
Special Order item
99951255400::1
Product Information
Product Information
Hose clamp, 12-22 mm - Various Applications.

porsche

Fits:
Porsche 928 - 1978 to 1986
Porsche 924 - 1976 to 1986
Porsche 924S - 1986 to 1988
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995



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

99951255400
99951255400

The product you are viewing cross references to these numbers
Vacuum hose 1 meter length. Porsche 911 turbo / 911 SC / 924 / 914 - 99918171040, N0203531, N0203535, PCG0203535, PAF020353
2
Vacuum hose 1 meter length. Porsche 911 turbo / 911 SC / 924 / 914
Special Order item
PAF020353
Product Information
Product Information
Vacuum hose - 3,5 x 2
Sold in 1 meter lengths. 

Fits:

  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 914 (1970-1976)



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

PAF020353
99918171040
N0203531
N0203535
PCG0203535
PAF020353

The product you are viewing cross references to these numbers
Vacuum Hose Sold by the Meter. Porsche 911 turbo / 911 SC / 924 / 914 - 99918171040, N0203531, N0203535, PCG0203535, PAF020353 - PKS35T
2
Vacuum Hose Sold by the Meter. Porsche 911 turbo / 911 SC / 924 / 914
PAF020353/1
Product Information
Product Information

Vacuum Hose 3.2 x 2mm 
Sold per metre

High-quality vacuum hose 3.2 x 5mm designed for various Porsche models.

This versatile hose is sold per metre, allowing you to cut to the exact length required for your application. It is used across various engine bay systems, including vacuum circuits, fuel system connections, and emissions-related components.

Fits:
Porsche 911 1978-1983 3.0L / SC
Porsche 911 1975-1977 3.0L Turbo (930)
Porsche 924 2.0L 1976-79
Porsche 924 2.0L 1980-85
Porsche 924 Turbo 2.0L 1979-81
Porsche 924 Turbo 2.0L 1982-84
Porsche 924 Carrera GT 2.0L 1981
Porsche 924 Carrera GTS 2.0L 1982
Porsche 914 (1970-1976)  

Manufactured for durability and flexibility, this hose ensures reliable performance under engine bay conditions, making it ideal for maintenance, repair, or full restoration of classic Porsche models.

Key Features

• 3.2mm internal diameter vacuum hose
• 7mm outer diameter for correct fitment
• Sold per metre for custom lengths
• Suitable for Porsche 911 and 911 Turbo (1970–1977)
• Multi-use across vacuum and fuel systems
• Flexible and durable construction
• OEM-style specification

Function and Purpose

This vacuum hose is used across multiple engine systems.

It helps to:
• Maintain vacuum pressure for engine operation
• Connect vacuum-controlled components
• Support fuel system and carburettor functions
• Ensure proper airflow and system balance
• Enable reliable engine performance

Why Replace Vacuum Hoses

Over time, rubber hoses degrade due to heat and age.

Common issues include:
• Cracking or splitting
• Vacuum leaks affecting performance
• Hardening and loss of flexibility
• Reduced system efficiency

Replacing old hoses restores proper vacuum function and engine reliability.



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

PAF020353
99918171040
N0203531
N0203535
PCG0203535
PAF020353

The product you are viewing cross references to these numbers
DISPLAYING 1 to 7 (of 7 products)
Also found on these pages
About Hoses / Pipes / Sleeves

Air Inlet Hoses, Pipes & Sleeves – Durable Intake Components for Porsche Performance

Air inlet hoses, pipes, and sleeves are essential components of your Porsche’s intake system, connecting the air filter housing, throttle body, turbocharger, and intercooler. They ensure a smooth and sealed flow of air into the engine, supporting efficient combustion, responsive acceleration, and consistent performance.

At Design911, we supply a full range of genuine and high-quality air inlet hoses, pipes, and sleeves for numerous Porsche models that include 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each component is engineered for precision fitment, heat resistance, and airflow stability — helping your Porsche deliver the performance and reliability it’s known for.

What Do Air Inlet Hoses, Pipes & Sleeves Do?

These components channel filtered air through the intake system to the engine’s combustion chambers. Their main functions include:

  • Maintaining airtight airflow between intake components.
  • Reducing turbulence and air loss for improved throttle response.
  • Supporting optimal air pressure for turbocharged and naturally aspirated engines.
  • Protecting against contaminants that can reduce performance or cause engine wear.

In turbocharged Porsche models, these parts also help manage boost pressure, making them crucial to both efficiency and power delivery.

Why Do Air Inlet Hoses, Pipes & Sleeves Fail?

Due to their constant exposure to heat, vibration, and engine movement, air inlet components can deteriorate over time. Common causes of failure include:

  • Cracking or splitting from heat cycles and material fatigue.
  • Oil or fuel vapor contamination softening the rubber or plastic.
  • Loose or damaged clamps causing vacuum or boost leaks.
  • Age-related hardening leading to brittle connections.
  • Excessive boost pressure stressing the hose in performance applications.

Symptoms of failure include hissing or whistling noises, loss of boost pressure, poor throttle response, rough idling, or a check engine light caused by airflow irregularities.

Why Replace Worn Air Inlet Components?

A leaking or damaged inlet hose can cause unmetered air to enter the engine, resulting in incorrect fuel-air ratios, poor performance, or even turbocharger strain. Replacing worn or cracked hoses and pipes ensures proper airflow, efficient combustion, and reliable performance.

Benefits of replacement include:

  • Restored air pressure and engine response.
  • Improved turbo efficiency and power delivery.
  • Enhanced fuel economy and reduced emissions.
  • Long-term reliability with manufacturer-quality materials.

All hoses, pipes, and sleeves available at Design911 are crafted from high-temperature silicone, reinforced rubber, or aluminium alloys for superior sealing, flexibility, and strength — ensuring dependable performance under demanding conditions.

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