Fuel rails / regulators

Adjustable fuel pressure regulator 2.0 to 5.0 bar. 

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 928 - 1980 to 1986 (non CIS)

Replaces Bosch 0280160262, 0280160232, 0280160215, Porsche 92811019802, 92811019801, 92811019800, 92811019826 (2.5 Bar no vacuum line connected)

Most of these regulators are original and now nearly 40 years old so they are prone to leak or fail causing all sorts of running and tuning issues.  They are easy to replace, albeit a little bit fiddly being at the front of the manifold for the 3.2ltr engine. To suit the lower operating fuel pressure of the 3.2 Motronic, we use an adjustable fuel pressure regulator.  This simple and elegant design uses steel O-Ring boss sealing adapters to the manifold. 

Easily replaceable fuel pressure regulator.
Spare outlet for fuel pressure gauge or sensor.
The adjustable fuel pressure regulator has been tested with Bosch 044 fuel pumps, but the upper limit of fuel flow rate has not been tested.

Kit Includes:

• Porsche 911 3.2 Carrera / early 928 (non CIS) OEM fitting kit - SPA adjustable fuel pressure regulator
• Fuel pressure regulator body x 1
• 2.0 to 5.0 adjustable fuel pressure regulator instead of fixed regulator x 1
• Adapter fittings to fit OEM hose and fuel rail ends x 2
• Hose Tail fitting to fit factory return line x 1
• ORB Plug x 1

This kit must use the adjustable fuel pressure regulator as Bosch does not produce a standard 2.5bar pressure regulator in this form.  

Please Note
Other fittings and options such as fuel pressure sensors, or fuel pressure gauges available upon request.
We have also developed fuel pressure dampers for the 3.2 and 928 engines, check out our site for the product details.
The fuel pressure regulator needs to be adjusted and set on the car after installation to ensure the operating conditions meet the factory specifications.  A fuel pressure gauge and fittings to adapt to the factory fuel rails is required to be able to complete this procedure.  The regulators are not shipped pre-set to the 2.5bar operating pressure.

We can also provide a solution for early 944 replacing Porsche part number 94411019801, Bosch part number 0280160214,

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Related, superseded, cross reference or alternative numbers for comparison.

92811019826

The product you are viewing cross references to these numbers

Adjustable fuel pressure regulator with JIC / AN fittings. Porsche 911 EFI upgrade

Fits:
Porsche 911  - 1974 to 1983 (CIS to EFI upgrade)

This is the Motorsport/Custom version of our fuel pressure regulator that uses AN6 JIC fittings and plugs to suit aftermarket fuel lines and fuel rail configurations when converting from CIS to EFI, or removing the later model fuel injection systems for an alternative custom setup.

Our adjustable fuel pressure regulator uses the latest Bosch regulators and is adjustable from 2.0 to 5.0 Bar pressures. This simple and elegant design uses O-Ring boss sealing adapters to the manifold with multiple options for hose connections.  Ultimate hose layout flexibility is achieved through multiple port orientations and options so this allows for standard 3.2, 964, or 993 fuel hose configurations, or, for dead head configurations where there is a single feed line to each fuel rail and no return line from the rail, only this regulator.  

Easy to replace regulator with Bosch OEM reliability

3 outlet ports for flexible hose, fitting, gauge, sensor port options - now or for the future

This kit is perfect for any EFI conversion on any of the air cooled 6 cylinder engines.  These can be combined with our fuel rails that fit to either our 2 bolt adapters, or the 964/993 intake stacks

The Bosch regulator is rated to a maximum fuel flow of 200lpm.  The adjustable pressure regulator flows more, but we have not yet measured its upper limits, but it has been proven to work with a Bosch 044 fuel pump.

Kit Includes:

• Fuel pressure regulator body x 1
• 2.0 to 5.0 adjustable fuel pressure regulator instead of fixed regulator x 1
• AN6 JIC fittings x 4
• ORB Plugs x 2

Mounting bracket to breather cover x 1

Applications
Any custom hose solution with AN/JIC Fittings for any vehicle with custom hosing and mounting.
Any 911 2.7/3.0 when removing the CIS and installing your own EFI solution.

The Adapt Motorsport Advanced Fuel Rail Kit combines fuel distribution, Bosch pressure regulation and pulse damping for Porsche 911 Carrera 3.2 applications. It is offered in single- and dual-regulator configurations for custom fuel-system installations.

Fits:

• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50

What This Product Does

Opening and closing fuel injectors generate pressure pulses within the fuel circuit. The integrated damper helps control these fluctuations, while the replaceable Bosch module regulates rail pressure. Combining these components within the rail reduces the need to mount separate regulator and damper units, simplifying the number of hoses and connections required.

Functions

• Distributes fuel between the engine injectors
• Controls rail pressure through a replaceable Bosch regulator module
• Helps suppress pressure pulses created by injector operation
• Reduces the number of external fittings and potential leakage points
• Allows the fuel-hose layout to be tailored to the installation

Technical Details

• Available for Carrera 3.2 manifolds 
• Supplied with a 3.8-bar regulator.
• Single version pairs one regulator-and-damper rail with one conventional fuel rail
• Dual version uses two rails, each incorporating its own regulator and damper
• Rated regulator flow is 200 lph per module, giving a combined 400 lph with the dual arrangement
• ORB ports use O-ring seals; AN6 JIC unions and end plugs are included, with fasteners and manifold adapters supplied for the Carrera 3.2 option

Why Replacement Matters

This kit is intended for bespoke or upgraded fuel systems where integrated pressure management can make the installation more compact and easier to service. The Bosch modules can be removed independently, allowing a worn regulator to be renewed or the pressure specification to be changed without replacing the complete rail.

Installation Notes

• Bespoke fuel hoses must be made to suit the vehicle and selected configuration
• The dual-regulator layout requires additional hose routing compared with the single version
• Each regulator is limited to 200 lph; a Bosch 044 pump is stated at 275 lph and therefore exceeds the capacity of one regulator
• Pump output, injector requirements and regulator capacity must be considered together when specifying the complete system

FAQs

• Is the pressure regulator serviceable?
  Yes. The rail accepts replaceable Bosch regulator modules, so the module can be renewed separately.
• How do the two kit layouts differ?
  The single arrangement includes one integrated rail and one standard rail. The dual arrangement employs two integrated rails for a combined regulator rating of 400 lph.
• Will the original fuel hoses fit?
  No. Custom hoses are necessary for installation.
• Can a different operating pressure be selected?
  Yes. The normal specification is 3.8 bar, with regulator options stated from 3.0 to 4.0 bar.

Check fitment for your specific vehicle, engine and planned fuel-system configuration before ordering.

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

AMS9050290-

The product you are viewing cross references to these numbers

Billet aluminium fuel rail set,  Anodised Black.

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989

Our billet and anodised fuel rail kit bolts directly to the standard 3.2 intake manifold.  
Using O ring fittings to the fuel rail, and AN 6 JIC fittings this allows for a very flexible choice of fuel hose arrangements.  

Replicate the factory 964 system, or the 993 system, or really simplify and use a dead head system. 

Rails are shipped with a combination of fittings or plugs.

This set makes it very easy to add fuel pressure sensing to the rails for those that want to tune, log or use protection strategies in your aftermarket ECU setup.

Check out our matching fuel pressure regulator to complete your fuel system today

Kit Includes:

• Fuel Rails x 2
• ORB to JIC Fittings x 4
• ORB Plugs x 2
• Anodised support adapters x 2
• Screws to fix to factory intake adaptors

Please Note
Cars with factory air conditioning compressors will need to use the supplied plugs to close the rear end of the fuel rails, and opt for a common "dead head" fuel hose arrangement.

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

93011030704

The product you are viewing cross references to these numbers

The CNC-machined and anodised fuel rail kit by Adapt Motorsport is designed for Porsche 964 and 993 3.6ltr engines using the standard intake adaptors. It can also mount to Adapt Motorsport two-bolt adaptors for earlier 2.7, 3.0 and 3.2ltr Porsche 911 engines.

Fits

• Porsche 911 964 3.6L with standard intake adaptors
• Porsche 911 993 3.6L with standard intake adaptors
• Earlier Porsche 911 2.7L, 3.0L and 3.2L engines fitted with Adapt Motorsport two-bolt intake adaptors

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

What This Product Does

This twin-rail kit provides configurable fuel connections using O-ring ports and AN-6 JIC fittings. It supports hose arrangements based on the factory 964 or 993 system, as well as a simplified dead-head configuration, and allows fuel-pressure sensing to be added for compatible aftermarket ECU tuning, data logging or protection strategies.

Functions

• Mounts directly to standard Porsche 964 and 993 intake adaptors
• Supports factory-style 964 or 993 fuel-hose layouts
• Allows a dead-head fuel-system arrangement
• Provides connection points for fuel-pressure sensing
• Uses removable fittings and plugs for flexible installation

Technical Details

• CNC-machined and anodised construction
• AN-6 JIC fittings with O-ring fuel-rail connections
• Product references: AMS9050032 and AMS9050033
• Kit includes two fuel rails
• Includes four ORB-to-JIC fittings, two ORB plugs and mounting screws for factory intake adaptors
• Cars with factory air-conditioning compressors must use the supplied plugs to close the rear ends of the rails and use a dead-head fuel-hose layout

Why Replacement Matters

This kit provides a serviceable and adaptable rail arrangement for compatible standard or modified fuel systems. Its interchangeable fittings and plugs allow the installation to be configured around the selected hose layout, intake adaptors and pressure-sensing requirements.

FAQs

• Can the kit reproduce the factory fuel layout? It can be arranged in a factory-style 964 or 993 configuration, or installed as a simplified dead-head system.
• Does it fit earlier Porsche 911 engines? It fits 2.7L, 3.0L and 3.2L engines when used with the compatible Adapt Motorsport two-bolt intake adaptors.
• Can a fuel-pressure sensor be installed? Yes, the rail arrangement allows pressure sensing to be added for compatible aftermarket ECU systems.
• What is supplied? The kit contains two rails, four ORB-to-JIC fittings, two ORB plugs and screws for attachment to factory intake adaptors.
• Is there a special requirement for cars with air conditioning? Cars retaining the factory compressor must close the rear rail ports with the supplied plugs and use a dead-head hose arrangement.

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

93011045900

The product you are viewing cross references to these numbers

This Adapt Motorsport fixed 3.0 bar fuel pressure regulator kit is a direct-fit solution for the early 1987 Porsche 928 S4. It may also be used as a pressure upgrade for the 1984–89 Porsche 911 Carrera 3.2 and 1980–86 non-CIS 928 when accompanied by suitable engine-management retuning.

Fits:

• Porsche 911 1984-1986 3.2L -  upgrade from 2.5 to 3.0 bar; retuning required
• Porsche 911 1987-1989 3.2L G50 -  upgrade from 2.5 to 3.0 bar; retuning required
• Porsche 928S4 5.0L 1987

What This Product Does

The regulator maintains a fixed 3.0 bar fuel pressure without a connected vacuum reference line. The supplied body and adapters allow the Bosch regulator to connect to the relevant factory fuel rail, supply hose and return line.

Functions

• Controls fuel-system pressure at a fixed 3.0 bar setting
• Connects the Bosch regulator to the original fuel rail and hose ends
• Retains connection to the factory fuel return line
• Provides a replacement for the specified Porsche and Bosch references
• Supports suitably retuned 2.5-to-3.0 bar upgrade applications

Technical Details

• Regulator type: fixed-pressure Bosch unit
• Nominal pressure: 3.0 bar
• Vacuum reference: no vacuum line connected
• Kit contents: one regulator body, one Bosch regulator, two OEM-end adapter fittings, one return-line hose-tail fitting and one ORB plug
• Porsche reference: 92811019802
• Bosch references: 0280160232 and 0280160262

Symptoms of Fault

• Difficult starting when the engine is hot
• Rough, unstable or hunting idle
• Rich running, black exhaust smoke or increased fuel consumption
• Hesitation when applying the throttle
• Misfiring or weak running under load
• Fuel odour or leakage near the regulator
• Fuel pressure that is incorrect, unstable or falls too quickly after shutdown

Why Replacement Matters

An ageing or defective regulator can allow fuel pressure to move outside the intended specification, affecting starting, idle quality and fuelling. This Porsche-specific fitting kit provides the components needed to install a modern fixed-pressure Bosch regulator while retaining the relevant factory hose, rail and return-line connections. On vehicles originally configured for 2.5 bar, the change to 3.0 bar must be matched by appropriate chip or ECU retuning rather than treated as a direct standard-pressure replacement.

FAQs

• Is this a direct replacement for every listed model?
  No. It is specified as a direct 3.0 bar replacement for the early 1987 non-CIS Porsche 928. Earlier 928 and 911 Carrera 3.2 applications require retuning.
• Can it replace Porsche reference 92811019802?
  Yes. This reference is specified for the 3.0 bar application without a connected vacuum line.
• Which Bosch regulators does the kit replace?
  The stated cross-references are Bosch 0280160232 and 0280160262.
• Is the regulator adjustable?
  No. The included Bosch regulator has a fixed 3.0 bar pressure specification.
• Does the kit connect to the factory return line?
  Yes. A hose-tail fitting for the original return line is included.
• Is specialist installation recommended?
  Professional installation and calibration are advisable, particularly when converting a vehicle from 2.5 to 3.0 bar fuel pressure.

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

AMS9050124

The product you are viewing cross references to these numbers

Fuel pressure regulator with JIC fittings. Porsche 911 EFI upgrade

Fits:

Porsche 911  - 1974 to 1983 (CIS to EFI upgrade)

This is the Motorsport/Custom version of our fuel pressure regulator that uses AN6 JIC fittings and plugs to suit aftermarket fuel lines and fuel rail configurations when converting from CIS to EFI, or removing the later model fuel injection systems for an alternative custom setup.

Our fuel pressure regulator uses the latest Bosch regulators and is available in 3.8 Bar pressure. This simple and elegant design uses O-Ring boss sealing adapters to the manifold with multiple options for hose connections.  Ultimate hose layout flexibility is achieved through multiple port orientations and options so this allows for standard 3.2, 964, or 993 fuel hose configurations, or, for dead head configurations where there is a single feed line to each fuel rail and no return line from the rail, only this regulator.  

Easy to replace regulator with Bosch OEM reliability

3 outlet ports for flexible hose, fitting, gauge, sensor port options - now or for the future

This kit is perfect for any EFI conversion on any of the air cooled 6 cylinder engines.  These can be combined with our fuel rails that fit to either our 2 bolt adapters, or the 964/993 intake stacks

The Bosch regulator is rated to a maximum fuel flow of 200lpm.  The adjustable pressure regulator flows more, but we have not yet measured its upper limits, but it has been proven to work with a Bosch 044 fuel pump.

Kit Includes:

• AN 6 fitting kit - Bosch fixed pressure regulator
• Our flexible option uses JIC AN6 fittings, to allow for easy aftermarket lines to be made to suit your installation and hose layout.
• Fuel pressure regulator body x 1
• Bosch 3.8 bar fuel pressure regulator x 1
• AN6 JIC fittings x 4
• ORB Plugs x 2
• Mounting bracket to breather cover x 1

Applications
Any custom hose solution with AN/JIC Fittings for any vehicle with custom hosing and mounting.
Any 911 2.7/3.0 when removing the CIS and installing your own EFI solution.

Mounting bracket fuel pressure regulator. 

Fits
Porsche 911 - 1974 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Our newly released fuel pressure regulator brackets mount to the Adapt Motorsport fuel pressure regulators to the engine breather cover bolts on top of the classic aircooled engines.  
The same as Porsche do for the 964.  

Manufactured from CNC machine aluminium and anodised in a dark silver colour, they really add a nice look to any classic Porsche engine bay.

Please Note
Only the regulator brackets and fasteners are included in the kit, the regulator is shown for reference purposes only and not included.  

We have a range of different regulators that can be ordered.