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Heater hoses & pipes

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DISPLAYING 1 to 8 (of 8 products)
Special Order item
99657276502
Product Information
Product Information
Grommet heater pipe. 

Fits:
Porsche 986 Boxster -1997 to 2004
Porsche 987 Boxster - 2005 to 2012
Porsche 987 Cayman - 2005 to 2012

Porsche 996 -1997 to 2005
Porsche 997 - 2005 to 2012

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Diagram ref no 8



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99657276502
99657276502
99657276501

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99657226303
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Product Information
Heater hose gasket for Right-hand drive cars (RHD).

Fits:
For Right-hand drive cars (RHD)
Porsche 986 Boxster 1998-04
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 996 1998-05
Porsche 997.1 2005-08
Porsche 997.2 2009-12

Diagram ref no 1

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99657226303
99657226303

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99657226302
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Heater hose gasket for left-hand drive cars (LHD).

Fits:
For left-hand drive cars (LHD)
Porsche 986 Boxster 1998-04
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 996 1998-05
Porsche 997.1 2005-08
Porsche 997.2 2009-12

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Diagram ref no 1

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99657226302
99657226302

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Special Order item
99757255501
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Product Information
Heater hose, Return.

Fits:
For RHD cars
Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Porsche 996 GT3 1999-05
Porsche 986 Boxster 1997-05
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 200-12
Porsche 987C.1 Cayman 2006-08
Porsche 987C.2 Cayman 2009-12
Porsche 997.1 Carrera 2005-08
Porsche 997.1 Turbo 2007-10
Porsche 997 GT3 2007-11
Porsche 997.2 Carrera 2009-12
Porsche 997.2 Turbo 2010-13

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Diagram ref no 2

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99757255501
99657258501
99657258505
99757255501

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Special Order item
99757255301
Product Information
Product Information
Heater hose, Supply.

Fits:
For RHD cars
Porsche 986 Boxster 1997-04
Porsche 996 Boxster 1998-05

Porsche 987 Boxster 2005-08
Porsche 987.2 Boxster 2009-12

Porsche 987C Cayman 2006-08
Porsche 987C.2 Cayman 2009-12

Porsche 997.1 Carrera 2005-08
Porsche 997.2 Carrera 2009-12
Porsche 997.2 Turbo 2010-13

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Diagram ref no 1



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99757255301
99757255301
99657258305
99657258301

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9P1129487
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Product Information
Vacuum Line Connector. 

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 - 1997 to 2005
Porsche 997 - 2005 to 2012
Porsche 991.1 - 2012 to 2016
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012

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Diagram ref no 2 and 13



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9P1129487
92857471707
9P1129487
92857471705
92857471703
92857471706

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9P1129487/1
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Product Information

OE Match vacuum pipe connector for selected Porsche 911 generations, Boxster 986 and Boxster / Cayman 987 applications. Intended for repairs to the connecting sections of vacuum pipework.

Fits

Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 - 1997 to 2005
Porsche 997 - 2005 to 2012 correct
Porsche 991.1 - 2012 to 2016
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012

Check fitment for your specific vehicle (model, year, engine) before ordering.

Diagram ref no 2 & 13

What This Product Does

The connector joins vacuum pipework at the relevant connection point. Its role is to maintain the connection rather than generate vacuum or operate an actuator.

Functions

  • Connects sections of vacuum pipework.
  • Provides a replacement for a damaged or leaking connection.
  • Supports continuity of the connected vacuum circuit.

Technical Details

  • Brand: OE Match.
  • 9P1129487 is identified as a distributing piece and moulded hose in the 911 Carrera diagrams.
  • 911 Carrera L-Jetronic II applications: 930.20/21/26, 1984–86; 930.20/25/26, 1987–89. Air-injection diagrams also identify 930.26, including AUS, CH and S applications for 1984–86.
  • 92857471705 is identified as a protective tube in the supplied 964 and 993 diagrams.
  • 964 diagram applications: M64.01/02/03, 1989–94; 964 Turbo M30.69 and M64.50, 1991–94.
  • 993 Carrera/4 diagram applications: M64.05/06/07/08, 1994–98. Diagram quantities vary by application and position; they do not establish the quantity supplied.

Symptoms of Fault

  • Visible cracks or deterioration around the connection.
  • Hissing near the vacuum pipe joint.
  • Leakage identified during vacuum testing.
  • Irregular operation of the connected vacuum-controlled component.
  • Unstable idle where the leaking circuit affects the intake system.

Why Replacement Matters

A leaking connection can interrupt vacuum supply to the attached circuit. Renewing a confirmed faulty connector addresses that leak point; adjoining hoses and fittings should also be inspected for deterioration. OE Match develops replacement components around Porsche applications, using original references and application information to guide component selection.

FAQs

Does this replace a vacuum pump or actuator?
No. It is a pipework connector, not a pump, valve or actuator assembly.

Should nearby hoses be inspected?
Yes. Hardened or split hoses can leave the circuit leaking after the connector has been renewed.

Is the same connector used throughout every listed vehicle?
The installation position depends on the application. Compare the original connection and relevant diagram before fitting.



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

9P1129487
92857471707
9P1129487
92857471705
92857471703
92857471706

The product you are viewing cross references to these numbers
Special Order item
99923904040
Product Information
Product Information
Vacuum Line Connector. 

Fits:
Porsche 996 - 1997 to 2005
Porsche 997 - 2005 to 2012
Porsche 991.1 - 2012 to 2016
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012

Click 'Zoom in' for large parts diagram.
Diagram ref no 19



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99923904040
99923904040

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DISPLAYING 1 to 8 (of 8 products)
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About Heater hoses & pipes

Porsche Heater Hoses & Pipes | Reliable Coolant Flow & Cabin Heating Efficiency

Heater hoses and pipes are essential components in your Porsche’s heating and cooling system. They carry heated coolant from the engine to the heater core, enabling warm air circulation throughout the cabin. Without properly functioning hoses and pipes, the heating system cannot deliver consistent temperature control or maintain efficient engine cooling.

At Design911, we supply premium heater hoses and coolant pipes that meet or exceed original engineering standards. Constructed from high-quality rubber, aluminium, or reinforced composite materials, these components ensure leak-free performance, excellent heat resistance, and long-term durability.

Whether you’re restoring a classic 911 or maintaining a modern Porsche with advanced climate control systems, our heater hoses and pipes provide the precision, fitment, and performance required for dependable heating and cooling.

What Do Heater Hoses & Pipes Do?

Heater hoses and pipes form the circulation path that carries hot coolant from the engine to the heater core, allowing the HVAC system to provide warm air inside the cabin.

Core Functions:

  • Transfer heated coolant to the heater core for cabin warming.
  • Maintain proper coolant flow between engine and heating system.
  • Regulate temperature and prevent air pockets in the system.
  • Ensure efficient heat exchange for passenger comfort.
  • Protect against coolant loss and overheating.

A properly functioning set of hoses and pipes is critical for both engine cooling performance and interior heating efficiency.

Why Do Heater Hoses & Pipes Fail or Degrade?

These components endure constant heat, pressure, and vibration. Over time, material fatigue and corrosion can lead to leaks or blockages.

Common Causes of Failure Include:

  • Age-related cracking, swelling, or brittleness of rubber hoses.
  • Corrosion or pinhole leaks in metal pipes.
  • Coolant contamination or chemical degradation.
  • Loose or damaged hose clamps causing leaks.
  • Blockages from scale or debris restricting coolant flow.

When heater hoses or pipes fail, symptoms include coolant leaks, weak cabin heat, overheating, or a sweet smell of antifreeze inside the cabin.

Why Replace Your Porsche Heater Hoses & Pipes?

Replacing worn or damaged heater hoses and pipes restores proper coolant circulation, prevents leaks, and ensures stable heating and engine temperature control.

Key Benefits:

  • Restores efficient coolant flow and cabin heating performance.
  • Prevents leaks, overheating, and engine damage.
  • Improves reliability and system pressure integrity.
  • Resistant to heat, pressure, and corrosion for long lifespan.
  • Direct-fit replacements for Porsche 911, Cayman, Boxster, Panamera, Macan, and Cayenne models.
  • Ideal for maintenance, restorations, or performance upgrades.

It’s recommended to replace heater hoses and clamps during coolant service intervals to maintain maximum system reliability.

Highlights

  • Precision-engineered Porsche heater hoses and coolant pipes.
  • Constructed from high-quality, heat-resistant materials.
  • Direct-fit replacements for Porsche models old and new.
  • Designed for long-term resistance to pressure and corrosion.
  • Ensures reliable heating and engine cooling performance.
  • Ideal for restoration, servicing, and preventative maintenance.       

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