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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 12 (of 12 products)
Special Order item
99978204190
Product Information
Product Information
Air intake hose.

porsche

Fits:
Porsche 993 Carrera 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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99978204190
99978204190

The product you are viewing cross references to these numbers
99978204190/1
Product Information
Product Information
Air intake hose.

oematch

Fits:
Porsche 993 C2/C4 3.6-3.8 10/93-09/97
Porsche 993 RS 3.8 06/95-09/97

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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99978204190
99978204190

The product you are viewing cross references to these numbers
Special Order item
96411051504
Product Information
Product Information
Breather hose air intake system. 

porsche

Fits:
Porsche 964 Carrera 2 / Carrera 4 - 1989 to 1994
Porsche 993  Carrera 2 / Carrera 4  - 1994 to 1995
Porsche 993 turbo - 1994 to 1997

Click 'Zoom in' for large parts diagram.
Diagram ref no 36



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96411051504
96411051504
96411051502

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Special Order item
96411027800
Product Information
Product Information
Choke piece air intake breather system.

porsche

Fits:
Porsche 964 Carrera 2 / Carrera 4 - 1989 to 1994
Porsche 993  Carrera 2 / Carrera 4  - 1994 to 1998
Porsche 993 RS - 1994 to 1997

Click 'Zoom in' for large parts diagram.
Diagram ref no 31



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96411027800
96411027800

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Special Order item
99311054302
Product Information
Product Information
Hose. Bleeder valve to intake connector.

porsche

Fits:
Porsche 993 C2 / C4 1994-95
Porsche 993 Turbo 1994-98

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

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99311054302
99311054302
99311054300

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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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99951255400
99951255400

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Special Order item
99310722352
Product Information
Product Information
Intake air distributor oil pipe.

porsche

Fits:
Porsche 993 Turbo 3.6L 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 45

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99310722352
99310722352
99310722351

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Special Order item
99918106841
Product Information
Product Information
Intake vacuum hose - Check valve to Venturi tube.

porsche

Fits:
Porsche 911 Carrera 3.2L 1984-89
Porsche 964 C2 / C4 3.6L 1989-94
Porsche 993 C2 / C4 3.6L 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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99918106841
99918106841

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Special Order item
99311068300
Product Information
Product Information
Rubber Sleeve For Intake Manifold.
Sold Each.
x6 Required Per Car.


Fits:
Porsche 993 Carrera RS 1994>>1997
Cars With Engine Codes:
6420

Diagram Ref No 26

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99311068300
99311068300

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Special Order item
99311036851
Product Information
Product Information
Rubber sleeve, Air mass meter to intake manifold.

porsche

Fits
Porsche 993 Turbo 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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99311036851
99311036851

The product you are viewing cross references to these numbers
99611068650/1
Product Information
Product Information

Silicone coupler sleeve set for GT3 intake manifold plenum to throttle body. 
Sold as a set of 4

Fits:
Porsche 964 - 1989 to 1994 (with GT3 inlet upgrade)
Porsche 993 - 1994 to 1998 (with GT3 inlet upgrade)
Porsche 996 - 1997 to 2005 (with GT3 inlet upgrade)

The original rubber couplers for Porsche 996 and 997 GT3 models have become increasingly costly and hard to source, and many enthusiasts opt to avoid them for high-performance applications like hot rods or track cars due to their limited heat resistance.

Our precision-molded OEM+ silicone sleeves are the perfect direct replacement, offering double the temperature resistance of the original rubber couplers along with an enhanced appearance. These high-quality sleeves are essential for replacing worn-out rubber parts and are ideal for air-cooled hot rods undergoing a modern DBW (Drive-By-Wire) conversion using a GT3 intake plenum.

This set includes four silicone sleeves 

Replaces Porsche part number 99611068552 and 99611068650

Diagram ref no 9 and 11



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

99611068650
99611068551
99611068552
99611068553
99611068650

The product you are viewing cross references to these numbers
99611068792/1
Product Information
Product Information

Silicone sleeve set for GT3 intake manifold. Porsche 964 / 993 / 996
Sold as a set of 6

silverlake

Fits:
Porsche 964 - 1989 to 1994 (with GT3 inlet upgrade)
Porsche 993 - 1994 to 1998 (with GT3 inlet upgrade)
Porsche 996 - 1997 to 2005 (with GT3 inlet upgrade)

The original rubber couplers for Porsche 996 and 997 GT3 models have become increasingly costly and hard to source, and many enthusiasts opt to avoid them for high-performance applications like hot rods or track cars due to their limited heat resistance.

Our precision-molded OEM+ silicone sleeves are the perfect direct replacement, offering double the temperature resistance of the original rubber couplers along with an enhanced appearance. These high-quality sleeves are essential for replacing worn-out rubber parts and are ideal for air-cooled hot rods undergoing a modern DBW (Drive-By-Wire) conversion using a GT3 intake plenum.

This set includes six (6) silicone sleeves 

Replaces Porsche part numbers 99611068792 and 99611068790



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99611068792
99611068792
99611068790

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DISPLAYING 1 to 12 (of 12 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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