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 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Cut Off Valve Air Hose - 24 x 4.9mm
Sold per meter
High-quality cut off valve air hose designed for Porsche 964 turbo and 993 turbo models, with a 24x4.9mm
specification for correct fitment within the turbocharger air system.
Fits:
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Diagram ref no 44
This hose connects the cut-off (recirculation) valve within the intake system, playing a critical role in managing boost pressure and airflow during throttle changes. It helps prevent compressor surge and ensures smooth turbo operation by recirculating excess air back into the intake system.
Manufactured to OEM standards, this hose provides durability, flexibility, and resistance to heat and pressure, making it ideal for maintaining performance and reliability in turbocharged Porsche engines.
Key Features
• 24x4.9mm air hose for turbo applications
• Suitable for Porsche 964 Turbo and 993 Turbo
• Part number 00004320498
• Designed for cut-off / recirculation valve systems
• Maintains boost pressure control
• Resistant to heat and pressure
• OEM-style fit and performance
Function and Purpose
This hose is a vital component within the turbo intake system.
It helps to:
• Connect the cut-off (bypass) valve to the intake system
• Manage excess boost pressure
• Prevent turbo compressor surge
• Maintain smooth airflow during throttle transitions
• Support consistent turbo performance
Why Replace Air Hoses
Turbo system hoses are subject to high pressure and temperature.
Common issues include:
• Cracking or splitting
• Boost leaks reducing performance
• Hardening and loss of flexibility
• Reduced turbo efficiency
Replacing worn hoses restores proper boost control and engine performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004320498
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This intake manifold sleeve is a high-quality replacement, designed for the Porsche Boxster 986. This rubber sleeve ensures a proper seal between intake components, maintaining smooth airflow and reliable engine performance.
Sold each.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 986 Boxster 1997 - 2004
Diagram ref no 11
• Manufactured from durable, heat-resistant materials, this sleeve offers excellent vibration absorption and long service life.
• Direct-fit replacement for OE part numbers 996.110.685.51 / .52 / .53
• Maintains airtight sealing and correct airflow
• Cost-effective alternative with dependable performance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611068553
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Vacuum Hose - 3.5 x 2mm
High-quality vacuum hose with 3.5 x 2mm dimensions, designed for Porsche 964, 996, 986 Boxster, and 987.1 Boxster & Cayman models.
This hose is used across various engine systems to maintain
proper vacuum pressure, supporting the operation of intake, fuel, and
emissions-related components. It is essential for ensuring smooth engine
performance and correct system functionality.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Diagram ref no 21
Supplied in 1 metre lengths, this hose allows precise
replacement and routing, making it ideal for maintenance, repair, or
restoration of Porsche vacuum systems. Manufactured to OEM standards for
durability and reliability.
Key Features
• 3.5mm internal diameter, 2mm wall thickness
• Suitable for Porsche 964, 996, 986, and 987.1 models
• Part number 00004320499
• Designed for vacuum system applications
• Supplied in 1 metre lengths
• Flexible and durable construction
• Resistant to heat and engine bay conditions
• OEM-style fit and performance
Function and Purpose
This vacuum hose is a critical part of engine system operation.
It helps to:
• Maintain vacuum pressure across engine systems
• Support intake and fuel system functions
• Enable proper operation of valves and regulators
• Ensure balanced airflow and engine efficiency
• Support emissions control systems
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004320499
The product you are viewing cross references to these numbers