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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

Hoses / Pipes / Sleeves

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DISPLAYING 17 to 19 (of 19 products)
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91111088502/1
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Rubber sleeve inlet manifold. 
6 required per car

oematch

Fits:
Porsche 911 / 911S - 1974 to 1977

For cars with K-Jetronic fuel injection

Click 'Zoom in' for large parts diagram.
Diagram ref no 8



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91111088502
91111088502
911 110 885 02

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91111088502
Product Information
Product Information
Rubber sleeve inlet manifold. 
6 required per car

porsche

Fits:
Porsche 911 / 911S - 1974 to 1977

For cars with K-Jetronic fuel injection

Click 'Zoom in' for large parts diagram.
Diagram ref no 8



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Related, superseded, cross reference or alternative numbers for comparison.

91111088502
91111088502

The product you are viewing cross references to these numbers
99918128150/1
Product Information
Product Information

Vacuum Hose 3.2x7mm
Sold per metre

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 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1975-1977 3.0L Turbo (930)

 
Diagram ref no 49-50

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.

99918128150
99918128150

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DISPLAYING 17 to 19 (of 19 products)
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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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