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Porsche > Boxster 986/987/981 (1997-2016) > Boxster 986 2.5L 1997-99 > Engine Rebuild Parts > Air Intake & Injection >

Hoses / Pipes / Sleeves

Hoses / Pipes / Sleeves

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DISPLAYING 1 to 6 (of 6 products)
Air Guide For Air Cleaner. Porsche 986 Boxster 1997-04 - 98711022001, 9871102000
5
Air Guide For Air Cleaner. Porsche 986 Boxster 1997-04
Special Order item
98711022001
Product Information
Product Information
Air Guide For Air Cleaner.

Fits:
Porsche 986 Boxster 1997>>2004
Cars With Option Codes:
091 - Special Model '50 Years Spyder'

Diagram Ref No 8

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Related, superseded, cross reference or alternative numbers for comparison.

98711022001
98711022001
9871102000

The product you are viewing cross references to these numbers
Hose clamp, 12-22 mm. Porsche 911 / 964 / 993 / 996 / 997 / 986 - 99951255400
1
Hose clamp, 12-22 mm. Porsche 911 / 964 / 993 / 996 / 997 / 986
Special Order item
99951255400
Product Information
Product Information
Hose clamp, 12-22 mm - Various Applications.

porsche

Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 986 Boxster - 1997 to 2004
Porsche 996 - 1997 to 2005
Porsche 997.1 - 2005 to 2008



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Related, superseded, cross reference or alternative numbers for comparison.

99951255400
99951255400

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Intake manifold rubber sleeve. Porsche 996 Carrera / 986 Boxster - 99611068551, 99611068552, 99611068553
3
Intake manifold rubber sleeve. Porsche 996 Carrera / 986 Boxster
Special Order item
99611068553
Product Information
Product Information
Intake manifold to air distributor rubber sleeve, designed to ensure proper sealing and airflow in the intake system. It replaces part numbers 996.110.685.51 and 996.110.685.52. This rubber sleeve provides excellent durability, vibration resistance, and leak-free performance, ensuring smooth engine operation.
Sold each.

Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 986 Boxster 1997 - 2004

Diagram ref no 11

•  Acts as a flexible connector / sleeve within the intake manifold, helping bridge or seal parts of the intake path.
•  Helps ensure proper air flow sealing between sections of the intake manifold or throttle body / related components.
•  Reduces risk of air leaks, which can affect engine performance, idle stability, emissions, or cause unwanted engine behaviour.
•  The rubber material accommodates vibration, thermal expansion & contraction, and slight movement in the intake assembly.

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

99611068553
99611068551
99611068552
99611068553

The product you are viewing cross references to these numbers
Intake manifold rubber sleeve. Porsche 996 Carrera / 986 Boxster - 99611068552, 99611068551, 99611068553 - URO-015118
2
Intake manifold rubber sleeve. Porsche 996 Carrera / 986 Boxster
99611068553/1
Product Information
Product Information
Intake manifold to air distributor rubber sleeve.
This intake manifold sleeve is a high-quality replacement, designed for the Porsche Boxster 986. This rubber sleeve ensures a proper seal between intake components, maintaining smooth airflow and reliable engine performance.
Sold each.

Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 986 Boxster 1997 - 2004

Diagram ref no 11

•  Manufactured from durable, heat-resistant materials, this sleeve offers excellent vibration absorption and long service life.
•  Direct-fit replacement for OE part numbers 996.110.685.51 / .52 / .53
•  Maintains airtight sealing and correct airflow
•  Cost-effective alternative with dependable performance

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

99611068553
99611068552
99611068551
99611068553

The product you are viewing cross references to these numbers
Vacuum Hose 3,5x2mm. Porsche 964 / 986 Boxster / 987.1 Boxster / Cayman / 996 - 00004320499
2
Vacuum Hose 3,5x2mm. Porsche 964 / 986 Boxster / 987.1 Boxster / Cayman / 996
Special Order item
00004320499
Product Information
Product Information

Vacuum Hose - 3.5 x 2mm 

High-quality vacuum hose with 3.5 x 2mm dimensions, designed for Porsche 964, 996, 986 Boxster, and 987.1 Boxster & Cayman models.

This hose is used across various engine systems to maintain proper vacuum pressure, supporting the operation of intake, fuel, and emissions-related components. It is essential for ensuring smooth engine performance and correct system functionality.

Fits:

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche Boxster S 986 3.2L 2003-04
  • Porsche Boxster 987 2.7L 2005-08/08
  • Porsche Boxster 987 S 3.2/3.4L 2005-08/08
  • Porsche 996 C2 3.4L 1997-08/01
  • Porsche 996 C4 3.4L 1997-08/01
  • Porsche 996 C2 3.6L 09/01-2005
  • Porsche 996 C4 3.6L 09/01-2005
  • Porsche 996 C4S 3.6L 09/01-2005
  • Porsche Cayman 2.7L 987C 2006-08
  • Porsche Cayman S 3.4L 987C 2005-08

Diagram ref no 21 

Key Features

• 3.5mm internal diameter, 2mm wall thickness
• Suitable for Porsche 964, 996, 986, and 987.1 models
• Part number 00004320499
• Designed for vacuum system applications
• Supplied in 1 metre lengths
• Flexible and durable construction
• Resistant to heat and engine bay conditions
• OEM-style fit and performance

Function and Purpose

This vacuum hose is a critical part of engine system operation.

It helps to:
• Maintain vacuum pressure across engine systems
• Support intake and fuel system functions
• Enable proper operation of valves and regulators
• Ensure balanced airflow and engine efficiency
• Support emissions control systems



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

00004320499
00004320499

The product you are viewing cross references to these numbers
Vacuum Hose 3,5x2mm. Porsche 964 / 986 Boxster / 987.1 Boxster / Cayman / 996 - 00004320499 - PSE35
2
Vacuum Hose 3,5x2mm. Porsche 964 / 986 Boxster / 987.1 Boxster / Cayman / 996
00004320499/1
Product Information
Product Information

Vacuum Hose - 3.5 x 2mm 

High-quality vacuum hose with 3.5 x 2mm dimensions, designed for Porsche 964, 996, 986 Boxster, and 987.1 Boxster & Cayman models.

This hose is used across various engine systems to maintain proper vacuum pressure, supporting the operation of intake, fuel, and emissions-related components. It is essential for ensuring smooth engine performance and correct system functionality.

Fits:

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche Boxster S 986 3.2L 2003-04
  • Porsche Boxster 987 2.7L 2005-08/08
  • Porsche Boxster 987 S 3.2/3.4L 2005-08/08
  • Porsche 996 C2 3.4L 1997-08/01
  • Porsche 996 C4 3.4L 1997-08/01
  • Porsche 996 C2 3.6L 09/01-2005
  • Porsche 996 C4 3.6L 09/01-2005
  • Porsche 996 C4S 3.6L 09/01-2005
  • Porsche Cayman 2.7L 987C 2006-08
  • Porsche Cayman S 3.4L 987C 2005-08

Diagram ref no 21 

Supplied in 1 metre lengths, this hose allows precise replacement and routing, making it ideal for maintenance, repair, or restoration of Porsche vacuum systems. Manufactured to OEM standards for durability and reliability.

Key Features

• 3.5mm internal diameter, 2mm wall thickness
• Suitable for Porsche 964, 996, 986, and 987.1 models
• Part number 00004320499
• Designed for vacuum system applications
• Supplied in 1 metre lengths
• Flexible and durable construction
• Resistant to heat and engine bay conditions
• OEM-style fit and performance

Function and Purpose

This vacuum hose is a critical part of engine system operation.

It helps to:
• Maintain vacuum pressure across engine systems
• Support intake and fuel system functions
• Enable proper operation of valves and regulators
• Ensure balanced airflow and engine efficiency
• Support emissions control systems



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

00004320499
00004320499

The product you are viewing cross references to these numbers
DISPLAYING 1 to 6 (of 6 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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