Hoses / Pipes / Sleeves

Hose 8 x 14mm Wastegate, Warm Up Regulator & Coolant Expansion Tank
Sold per metre

High-quality hose designed for multiple Porsche applications, including the warm-up regulator (WUR) and turbocharger wastegate systems on the Porsche 911, as well as the coolant expansion bottle on the Porsche 928.

This versatile hose supports both fuel/air control systems and coolant circulation, making it an essential component for maintaining proper engine performance, boost control, and cooling system efficiency.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 928 4.5L 1978-82
• Porsche 928S 4.7L 1981-83
• Porsche 928S2 4.7L 1984-86
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95

Diagram ref no 16 and 46  

Supplied per metre, this hose allows precise length replacement and flexible routing, making it ideal for maintenance, repair, or restoration of Porsche engine bay systems. Manufactured to OEM specifications for durability and reliable performance.

Key Features

• 8mm internal diameter, 14mm outer diameter
• Suitable for Porsche 911 and Porsche 928
• Part number 99918170950
• Multi-use: WUR, wastegate, and coolant expansion systems
• Sold per metre for custom length applications
• Resistant to heat, pressure, and fluid exposure
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose is used across several critical systems.

It helps to:
• Supply air or pressure signals to the warm-up regulator (WUR)
• Support turbocharger wastegate operation and boost control
• Transport coolant to/from the expansion bottle (928)
• Maintain system pressure and fluid flow
• Ensure reliable engine and turbo performance

Why Replace Hoses

Hoses degrade over time due to heat, pressure, and fluid exposure.

Common issues include:
• Cracking or splitting
• Boost or vacuum leaks affecting performance
• Coolant leaks leading to overheating
• Hardening and reduced flexibility

Replacing worn hoses ensures safe operation and restores system efficiency.

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Related, superseded, cross reference or alternative numbers for comparison.

99918170950

The product you are viewing cross references to these numbers

Air Injection Pump to Injection Pump Filter Hose 

High-quality air injection pump to injection pump filter hose designed for Porsche 911 Turbo and 964 Turbo models.

This hose forms part of the secondary air injection (emissions) system, connecting the air injection pump to the injection pump filter. It ensures proper airflow delivery within the system, supporting emissions control and efficient engine operation.

Fits:

• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93

Diagram ref no 18  

Manufactured to OEM specifications, this hose provides durability, flexibility, and resistance to heat and engine bay conditions, making it ideal for maintaining or restoring Porsche turbo emissions systems.

Key Features

• Air injection pump to filter hose
• Suitable for Porsche 911 Turbo and 964 Turbo
• Part number 99923900440
• Designed for emissions / secondary air system
• Ensures proper airflow and system efficiency
• Resistant to heat and engine bay conditions
• OEM-style fit and performance

Function and Purpose

This hose is a key component within the air injection system.

It helps to:
• Connect the air injection pump to the filter
• Deliver air efficiently through the emissions system
• Support proper combustion and emissions control
• Maintain correct airflow within the system
• Ensure reliable engine and environmental performance

Why Replace Air Injection Hoses

Over time, hoses within the emissions system degrade due to heat and exposure.

Common issues include:
• Cracking or splitting
• Air leaks affecting emissions performance
• Hardening and loss of flexibility
• Reduced system efficiency

Replacing worn hoses ensures proper emissions system function and engine performance.

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

99923900440

The product you are viewing cross references to these numbers

Air Injection Pump to Injection Pump Filter Hose 

High-quality air injection pump to injection pump filter hose designed for Porsche 911 Turbo and 964 Turbo models.

This hose forms part of the secondary air injection (emissions) system, connecting the air injection pump to the injection pump filter. It ensures proper airflow delivery within the system, supporting emissions control and efficient engine operation.

Fits:

• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93

Diagram ref no 18  

Manufactured to OEM specifications, this hose provides durability, flexibility, and resistance to heat and engine bay conditions, making it ideal for maintaining or restoring Porsche turbo emissions systems.

Key Features

• Air injection pump to filter hose
• Suitable for Porsche 911 Turbo and 964 Turbo
• Part number 99923900440
• Designed for emissions / secondary air system
• Ensures proper airflow and system efficiency
• Resistant to heat and engine bay conditions
• OEM-style fit and performance

Function and Purpose

This hose is a key component within the air injection system.

It helps to:
• Connect the air injection pump to the filter
• Deliver air efficiently through the emissions system
• Support proper combustion and emissions control
• Maintain correct airflow within the system
• Ensure reliable engine and environmental performance

Why Replace Air Injection Hoses

Over time, hoses within the emissions system degrade due to heat and exposure.

Common issues include:
• Cracking or splitting
• Air leaks affecting emissions performance
• Hardening and loss of flexibility
• Reduced system efficiency

Replacing worn hoses ensures proper emissions system function and engine performance.

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

99923900440

The product you are viewing cross references to these numbers

Air Hose – 19 x 26mm
Sold per metre

High-quality air hose designed for Porsche 911 turbo and 928 models, supplied per metre for flexible installation and precise fitment.

On the 911 Turbo, this hose connects the auxiliary air regulator to the air filter box, supporting proper airflow during engine warm-up. On the Porsche 928, it connects to the air guide housing, ensuring balanced airflow within the intake system.

Fits:

• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 928 4.5L 1978-82
• Porsche 928S 4.7L 1981-83
• Porsche 928S2 4.7L 1984-86

Diagram ref no 53

This hose plays a critical role in idle stabilisation and cold start performance by regulating additional air supply during engine warm-up. Manufactured to OEM specifications, it offers durability, flexibility, and resistance to engine bay heat.

Key Features

• Auxiliary air regulator hose for intake systems
• Suitable for Porsche 911 Turbo and Porsche 928
• Part number PCG239094A
• Sold per metre for custom length applications
• Designed for idle control and airflow regulation
• Resistant to heat and engine bay conditions
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose is an essential component of the intake and idle control system.

It helps to:
• Connect auxiliary air regulator to intake system
• Regulate airflow during cold starts
• Maintain stable idle speed
• Support engine warm-up performance
• Ensure smooth and consistent engine operation

Why Replace Auxiliary Air Hoses

Over time, intake hoses can degrade due to heat and age.

Common issues include:
• Cracking or splitting
• Air leaks causing unstable idle
• Hardening and reduced flexibility
• Reduced airflow efficiency

Replacing worn hoses restores proper intake airflow and engine performance.

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

PCG239094A

The product you are viewing cross references to these numbers

Hose clamp for rubber sleeve between intake pipe on individual cylinders and intake manifold.



Fits:
Porsche 911/911S 1974-77

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

Price is for each.

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

9995122670B

The product you are viewing cross references to these numbers

Hose clip fuel nd air hose. 



Fits:
Porsche 911 - 1974 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 914 - 1970 to 1976
Porsche 924 - 1980 to 1985
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995

Click 'Zoom in' for large parts diagram.
Diagram ref no 29

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

PCG0235692

The product you are viewing cross references to these numbers

Hose – Warm-Up Valve to Air Filter 
Sold per metre

High-quality hose designed for Porsche 911 turbo (930) models from 1983 to 1989, connecting the warm-up valve (warm-up regulator) to the air filter box.

Fits:

• Porsche 911 1978-1989 3.3L Turbo (930

Diagram ref no 26

This hose plays a key role in the Bosch CIS (Continuous Injection System), supporting proper airflow and pressure regulation between the warm-up valve and intake system. It is essential for maintaining correct engine warm-up characteristics and stable fuel delivery.

Sold per metre, this hose allows for custom length replacement, making it ideal for maintenance, repair, or restoration of classic Porsche 911 Turbo fuel and intake systems. Manufactured to OEM specifications for reliable fitment and performance.

Key Features

• Hose for warm-up valve to air filter box connection
• Suitable for Porsche 911 Turbo (1983–1989)
• Part number 99923903440
• Designed for CIS fuel injection systems
• Sold per metre for custom length applications
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose is an important part of the CIS system.

It helps to:
• Connect the warm-up valve to the air intake system
• Maintain correct air and pressure balance
• Support proper engine warm-up operation
• Ensure consistent fuel delivery
• Enable stable engine performance

Why Replace Hoses

Over time, hoses can degrade due to heat and engine bay conditions.

Common issues include:
• Cracking or splitting
• Air leaks affecting engine performance
• Hardening and loss of flexibility
• Reduced efficiency of the CIS system

Replacing worn hoses ensures correct system operation and engine reliability.

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

99923903440

The product you are viewing cross references to these numbers

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

The product you are viewing cross references to these numbers

Hose. Warm-up valve to Air filter box. (shorten to 120 mm).
7.3 x 3

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

Diagram ref no 26

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

99923903440

The product you are viewing cross references to these numbers

Hot air hose, heat exchanger to air filter housing. 35 mm X 780 mm.


Fits:
Porsche 911 / 912 / 914 (1965-1971)

Please note: Two needed for 1968-1969.

Click 'Zoom in' for large parts diagram.
Diagram ref no 16

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

90110829100

The product you are viewing cross references to these numbers

Hot air hose, heat exchanger to air filter housing. 35 mm X 780 mm.
The OE Match Hot Air Hose is a flexible engine ducting hose designed for classic Porsche models. It connects the heat exchanger to the air filter housing, allowing warm air to be directed into the intake system.

Fits:
Porsche 911 / 912 / 914 (1965 - 1971)

Please note: Two needed for 1968-1969.

Diagram ref no 16

The hose channels warm air from the heat exchanger into the air intake system, helping the engine reach optimal operating conditions more quickly. This improves fuel vaporisation and engine efficiency during cold running.

Without proper airflow through this hose, cold start performance and drivability may be affected.

Function
•  Transfers warm air from heat exchanger to air filter housing
•  Supports cold start performance and engine warm-up
•  Improves fuel vaporisation in carburettor/injection systems
•  Maintains correct airflow within intake system

Over time, hot air hoses can become brittle, cracked, or collapsed due to heat and age. This can reduce airflow efficiency and impact engine performance, especially during cold starts.

Replacing the hose restores proper airflow, improves engine efficiency, and helps maintain the correct operation of the intake system - particularly important for classic carburetted engines.

When to replace
•  Cracked, brittle, or split hose
•  Collapsed or restricted airflow
•  Poor cold start performance
•  Missing or disconnected ducting
•  During engine bay restoration or service

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

90110829100

The product you are viewing cross references to these numbers

Idle control valve hose.



Fits:
Porsche 911 Carrera 3.2L 1984-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 38

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

93011058902

The product you are viewing cross references to these numbers

Idle control valve hose.



Fits:
Porsche 911 Carrera 3.2L 1984-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 38

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

93011058902

The product you are viewing cross references to these numbers

Idle control valve hose.



Fits:
Porsche 911 Carrera 3.2L 1984-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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

93011066500

The product you are viewing cross references to these numbers

Idle control valve hose.



Fits:
Porsche 911 Carrera 3.2L 1984-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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

93011066500

The product you are viewing cross references to these numbers

Inlet Manifold Hose - 15 x 3.5mm 

High-quality 15x3.5mm inlet manifold hose designed for Porsche 911 Turbo models, supporting correct airflow within the intake system.

Fits:

• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram ref no 37

This hose connects key intake components, ensuring proper air delivery to the engine and maintaining the balance required for optimal turbocharged performance. Designed to withstand engine bay heat and pressure, it plays a critical role in maintaining stable engine operation and efficiency.

Manufactured to OEM specifications, this hose ensures precise fitment, durability, and reliable performance, making it ideal for maintenance, repair, or restoration of Porsche 911 Turbo intake systems.

Key Features

• 15x3.5mm inlet manifold hose
• Suitable for Porsche 911 Turbo models
• Part number 99918128450
• Designed for air intake system applications
• Ensures secure and leak-free airflow
• Resistant to heat and engine bay conditions
• OEM-style fit and performance

Function and Purpose

This inlet manifold hose is an important part of the intake system.

It helps to:
• Deliver air efficiently to the engine
• Maintain correct air pressure within the intake system
• Support turbocharger and engine performance
• Prevent air leaks that affect running conditions
• Ensure stable and efficient combustion

Why Replace Intake Hoses

Over time, intake hoses can degrade due to heat and pressure.

Common issues include:
• Cracking or splitting
• Air leaks affecting engine performance
• Hardening and loss of flexibility
• Reduced intake efficiency

Replacing worn hoses restores proper airflow and engine performance.

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

99918128450

The product you are viewing cross references to these numbers