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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://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Hoses / Pipes / Sleeves

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DISPLAYING 1 to 11 (of 11 products)
DO88-KIT143S
Product Information
Product Information
Silicone air injection hose kit. Made from high quality silicone rubber with 3 layer polyester reinforcement.

doeighteight

To Fit:
Porsche 911 (930 Turbo) 1978 to 1989 all models with 3.3L Turbo engine

Hoses included:
• Air injection pump / Diverter valve - OEM ref 93011311801
• Diverter valve / Exhuast air tube - OEM ref 93011318100
• Diverter valve / Atmosphere - OEM ref 93011318200

Please refer to the product images for confirmation of position of the hoses.

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Related, superseded, cross reference or alternative numbers for comparison.

DO88-KIT143S
93011311801
93011318100
93011318200

The product you are viewing cross references to these numbers
CLAMP-KIT143
Product Information
Product Information
Stainless steel clamp kit for air injection hoses.

doeighteight

To Fit:
For Hose Kit #DO88-KIT143S
Porsche 911 (930 Turbo) 1978 to 1989 all models with 3.3L Turbo engine

Kit of 6 clamps:
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimize impact on hose surface.

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Related, superseded, cross reference or alternative numbers for comparison.

CLAMP-KIT143
93011311801
93011318100
93011318200

The product you are viewing cross references to these numbers
Special Order item
93011304302
Product Information
Product Information
Air Injection Pipe.

porsche

Fits:
Porsche 911 TURBO 1978-89
Porsche 964 TURBO 1991-94

Click 'Zoom in' for large parts diagram.
Diagram ref no 15

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Related, superseded, cross reference or alternative numbers for comparison.

93011304302
93011304302

The product you are viewing cross references to these numbers
93011304302/1
Product Information
Product Information
Air Injection Pipe.

Fits:
Porsche 911 TURBO 1978-89
Porsche 964 TURBO 1991-94

Diagram ref no 15

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Related, superseded, cross reference or alternative numbers for comparison.

93011304302
93011304302

The product you are viewing cross references to these numbers
Special Order item
PCG239094A
Product Information
Product Information
Hose. Auxiliary air regulator to air filter box.
18 x 26 x 180

Fits:
Porsche 930 (911) Turbo 3.3L 1983-89


Diagram ref no 53

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

PCG239094A
99923900940
PCG239094A

The product you are viewing cross references to these numbers
Special Order item
99923903440
Product Information
Product Information
Hose. Warm-up valve to Air filter box. (shorten to 120 mm).
7.3 x 3

porsche

Fits:
Porsche 930 (911) Turbo 3.3L 1983-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 26

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

99923903440
99923903440
99923900640

The product you are viewing cross references to these numbers
CLAMP-KIT142
Product Information
Product Information
Stainless steel clamp kit for K Jetronic hoses.

doeighteight

To Fit:
For K Jetronic Hose Kit #DO88-KIT142S
Porsche 911 (930 Turbo) 1978 to 1989 all models with 3.3L Turbo engine

Kit of 12 clamps

The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimize impact on hose surface.

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

CLAMP-KIT142
99918128450
93011017101
99923900740
99923901140
93011033503
93011033500
99923900940
PCG239094A

The product you are viewing cross references to these numbers
DO88-KIT142S
Product Information
Product Information
Silicone K-Jetronic hose kit. Made from high quality silicone rubber with 3 layer polyester reinforcement.

doeighteight

To Fit:
Porsche 911 (930 Turbo) 1978 to 1989 all models with 3.3L Turbo engine

Hoses included:
• Y-connection on lower intake manifold / Valve on upper intake manifold - OEM ref 99918128450
• Vacuum limiter / Upper intake manifold - OEM ref 93011017101
• Vacuum limiter / Y-connection on lower intake manifold - OEM ref 99923900740
• Connection on lower intake manifold / Brake vacuum - OEM ref 99923901140
• Auxiliary air regulator / Throttle body - OEM ref 93011033500 / 93011033503
• Auxiliary air regulator / Air filter box - OEM ref 99923900940

Please refer to the product images for confirmation of position of the hoses.

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

DO88-KIT142S
99918128450
93011017101
99923900740
99923901140
93011033503
93011033500
99923900940
PCG239094A

The product you are viewing cross references to these numbers
CLAMP-KIT145
Product Information
Product Information
Stainless steel clamp kit for Turbo inlet hose kit

doeighteight

To Fit:
For Turbo inlet hose kit #DO88-KIT145S
Porsche 911 (930 Turbo) 1978-1989 with 3.3 Litre Turbo engine

Kit of 6 clamps

The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimize impact on hose surface.

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

CLAMP-KIT145
93011013702
93011015801
93011015801

The product you are viewing cross references to these numbers
DO88-KIT144S
Product Information
Product Information
Silicone turbo vacuum hose kit.
Made from high quality silicone rubber with 3 layer polyester reinforcement.

doeighteight

To Fit:
Porsche 911 (930 Turbo) 1978-1989 with 3.3 Litre Turbo engine


Hoses included:
• Wastegate hose, OEM ref 99923903440
• Warm-up valve / Air filter box, OEM ref 99923900640 / 99923903440
• Warm-up valve / T-connection on throttle body, OEM ref 99923901340
• T-connection on throttle body / Vacuum limiter, OEM ref 99923901340

Please refer to the product images for confirmation of position of the hose.

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

DO88-KIT144S
99923903440
99923903440
99923900640
99923901340
99923901340

The product you are viewing cross references to these numbers
CLAMP-KIT144
Product Information
Product Information
Turbo vacuum hoses clamp kit.

doeighteight

To Fit:
For Turbo vacuum hose kit #DO88-KIT144S
Porsche 911 (930 Turbo) 1978-1989 with 3.3 Litre Turbo engine

Kit of 8 clamps

The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimize impact on hose surface.

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

CLAMP-KIT144
99923903440
99923903440
99923900640
99923901340
99923901340

The product you are viewing cross references to these numbers
DISPLAYING 1 to 11 (of 11 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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