do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928S2 4.7L 1984-86
Vacuum Hose Distribution Y-Piece – 4mm Vacuum Line
Splitter
Sold each - used in various locations
High-quality vacuum hose distribution Y-piece designed for a wide range of Porsche models including 911, 964, 924S, 944, 968, and 928.
This Y-splitter allows a single vacuum source to be divided into two outlets, enabling efficient routing and connection of vacuum lines within the engine bay or HVAC system. It is specifically designed for vacuum hoses with a 4mm outer diameter, ensuring a secure and precise fit.
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928S2 4.7L 1984-86
Diagram ref no 4
Manufactured to OEM standards, this connector is ideal for maintaining or restoring vacuum system integrity across multiple Porsche applications.
Key Features
• Universal-style vacuum Y-piece connector
• Suitable for Porsche 911, 964, 924S, 944, 968, and 928
• Designed for 4mm outer diameter vacuum hoses
• Enables splitting of vacuum lines
• OEM-style fit and function
• Durable construction for long-term reliability
Function and Purpose
This Y-piece is a critical connector within the vacuum system.
It helps to:
• Split a single vacuum line into two outputs
• Maintain proper vacuum routing
• Ensure consistent vacuum pressure distribution
• Support engine and HVAC system operation
Why Replace Your Vacuum Connector
Over time, vacuum connectors can degrade due to heat and age.
Common issues include:
• Cracked or brittle plastic
• Vacuum leaks
• Poor hose connections
• Engine or HVAC system malfunctions
Replacing the Y-piece restores proper vacuum system function.
• Loose or unsecured temperature sensor
• Incorrect temperature readings
• HVAC system inconsistencies
• Broken or missing connector clips
Replacing the lock piece restores proper sensor stability and function.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92857372702
The product you are viewing cross references to these numbers
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
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
The product you are viewing cross references to these numbers
- Porsche 911 1978-1989 3.3L Turbo (930)
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
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
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
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
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