Your Vehicle
Porsche // 928 (1978-1995) // 928GT 5.0L 1989-91
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Pressure Valves / Sensors / Dampers / Regulators
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
The Genuine Porsche Fuel Diaphragm Damper (Part Numbers: 93011060201 / 93011060231) is an original equipment fuel system component designed for the Porsche 928 S4, GT and GTS models manufactured between 1987 and 1995. This fuel pressure damper forms part of the engine's fuel injection system, helping absorb pressure pulsations and maintain smooth, consistent fuel delivery to the injectors.
Fits:
Porsche 928 S4 5.0L 1987–1992
Porsche 928 GT 5.0L 1989–1991
Porsche 928 GTS 5.4L 1992–1995
Diagram ref no 3.
Using an internal diaphragm mechanism, the damper reduces fuel pressure fluctuations generated during fuel system operation, supporting stable engine running, smooth acceleration and reliable performance.
Manufactured to Porsche's original specifications, this genuine replacement component provides precise fitment and dependable operation, making it ideal for fuel system repairs, maintenance and restoration.
What Does This Part Do? – Functions
- Pressure Stabilisation: Reduces fuel pressure pulsations within the injection system
- Smooth Fuel Delivery: Helps maintain consistent fuel flow to the injectors.
- Engine Performance: Supports smooth idling and acceleration.
- Fuel System Protection: Dampens pressure fluctuations within the fuel circuit.
- Original Fitment: Maintains factory-correct fuel system specifications.
Why Replace This Part?
Over time, the internal diaphragm can deteriorate due to ageing, continuous fuel pressure and exposure to fuel. A faulty damper may cause excessive fuel pressure fluctuations, rough idling, inconsistent engine performance or fuel leakage.
- Fuel Pressure Fluctuations: Excessive pressure pulsations detected during testing.
- Rough Idling: Uneven engine running associated with fuel pressure instability.
- Poor Acceleration: Hesitation or inconsistent engine response.
- Fuel Leaks: Visible leakage or fuel odour around the damper.
- Fuel System Repairs: During maintenance when the original damper is found defective.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011060231
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
OE Match fuel diaphragm damper for Porsche 928 S4, GT and GTS models from 1987 to 1995. This fuel system component helps smooth pressure fluctuations within the fuel supply system, supporting consistent fuel delivery to the engine.
Fits:
Diagram ref no 3.
Suitable for replacement where part number 93011060201 or 93011060231 is specified.
The fuel diaphragm damper is fitted within the fuel delivery system and uses an internal diaphragm to absorb pressure pulsations generated as fuel moves through the system.
- Helps damp fuel pressure pulsations
- Supports stable fuel delivery
- Helps smooth pressure variations within the fuel system
- Works with the fuel injection system to maintain consistent operation
- Replaces a worn or faulty fuel diaphragm damper
- Suitable for fuel system repair and refurbishment
- Supplied as an OE Match replacement part
- Fuel system pressure irregularities
- Deterioration of the internal diaphragm
- Fuel leakage around the damper
- Age-related fuel system refurbishment
- Damaged or corroded original component
- Fuel injection system servicing
- Fuel diaphragm damper is leaking
- Fuel pressure fluctuations are suspected
- Original component is damaged or deteriorated
- Fuel injection system is being overhauled
- Fuel rail components are being renewed
- Preventative refurbishment is being carried out
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011060231
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 928
Porsche 928 S
Porsche 928 S2
Porsche 928 S4
Porsche 928 GTS
Replaces Porsche part number 92811020200, 92811020222, 92811020201 and Bosch 0280161008, 0280161034
Direct replacement for Porsche 928 '83-95 front pulse damper
A direct replacement for the no longer available OEM Bosch fuel pressure dampers used in many Porsche, Volvo, Mercedes and other makes.
Our fuel pressure damper uses the latest OEM pulse damper to be a direct replacement to the aging and leaking fuel pressure dampers. This simple and elegant design uses steel O-Ring boss sealing adapters to the manifold with multiple options for hose connections.
Easy to replace damper with Bosch OEM reliability
Spare outlet port for fuel pressure sensor.
Kit includes
- Fuel pressure damper body x 1
- Pressure damper x 1
- Custom adapter fittings to fit to Porsche OEM hose ends x 3
- ORB Plug x 1
Please Note
Replacement fuel pressure regulators now also available, check out our website for product details.
The product comes fully assembled and ready to install.
Our fuel pressure dampers do not use a vacuum port. The original vacuum line can be plugged, or removed and capped.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811020201
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 928 S2 / 928 S4 - 1985 to 1995
Replaces Porsche 93011060201, 93011060230 and Bosch 0280161035 and 0280161021
Direct replacement for Porsche 911 Carrera 3.2 '84-89 fuel pressure damper as mounted to the fuel rail.
Direct replacement for Porsche 928 '85-95 Rear pulse damper
Also replacement Renault Alpine A610, V6 77 00 266 953
A direct replacement for the no longer available OEM Bosch fuel pressure dampers used in many Porsche, Volvo, Mercedes and other makes.
Our fuel pressure damper uses the latest OEM pulse damper to be a direct replacement to the aging and leaking fuel pressure dampers. This simple and elegant design uses steel O-Ring boss sealing adapters to the manifold with multiple options for hose connections.
Easy to replace damper with Bosch OEM reliability
Spare outlet port for fuel pressure sensor.
Kit includes
- Fuel pressure damper body x 1
- Pressure damper x 1
- Custom adapter fittings to fit to Porsche OEM hose ends x 2
- Custom mounting plug to factory bracket x 1
- ORB Plug x 1
Please Note
Replacement fuel pressure regulators now also available, check out our website for product details.
The product comes fully assembled and ready to install.
Our fuel pressure dampers do not use a vacuum port. The original vacuum line can be plugged, or removed and capped.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011060231
The product you are viewing cross references to these numbers
- 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 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 928 S4 / GT 1988-1991
Porsche 928 GTS 1992-95
Porsche 964 C2 / C4 / RS 1989-94
Click 'Zoom in' for large parts diagram.
Diagram ref no. 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811019825
The product you are viewing cross references to these numbers
- 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 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 928 S4 / GT 1988-1991
Porsche 928 GTS 1992-95
Porsche 964 C2 / C4 / RS 1989-94
Diagram ref no. 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811019825
The product you are viewing cross references to these numbers
- 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 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 964 Carrera 2 - 1989 to 1994
Porsche 964 Carrera 4 - 1989 to 1994
Porsche 964 RS - 1991 to 1993
Porsche 928 S4 / GTS - 07/1988 to 1994
Replaces Bosch 0280160297, and Porsche 92811019825 & 92811019804 & 92811019803 - 3.8 Bar (engine running, no vacuum line connected)
A direct replacement for the OEM Bosch fuel pressure regulators used in many Porsche, Volvo, Mercedes and other makes.
Our fuel pressure regulator uses the latest Bosch regulators and by default is shipped with a 3.8 bar regulator to be a direct replacement. This simple and elegant design uses steel O-Ring boss sealing adapters to the manifold with multiple options for hose connections.
Easy to replace regulator with Bosch OEM reliability
3 outlet ports for flexible hose, fitting, gauge, sensor port options
The Bosch regulator is rated to a maximum fuel flow of 200lpm.
Kit Includes:
- Porsche 964 / late 928 OEM fitting kit
- Fuel pressure regulator body x 1
- Bosch Fuel pressure regulator x 1
- Option for adjustable fuel pressure regulator instead of fixed regulator
- Custom adapter fittings to fit to Porsche OEM hose ends x 3
- ORB Plug x 1
* Mounting bracket not included. Fits to factory regulator bracket or our bracket if required for additional cost
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811019825
The product you are viewing cross references to these numbers
Fuel Pressure Valves, Sensors, Dampers & Regulators – Consistent Fuel Flow for Porsche Performance
Fuel pressure valves, sensors, dampers, and regulators are critical components in your Porsche’s fuel system, ensuring stable fuel pressure and accurate fuel delivery under all driving conditions. Working together, these parts maintain the delicate balance between performance, efficiency, and emissions control that defines Porsche engineering.
At Design911, we offer a comprehensive range of fuel pressure components — including regulators, dampers, pressure relief valves, and sensors — developed to deliver exceptional reliability and precise fitment for Porsche models across generations. Crafted from high-strength alloys, corrosion-resistant materials, and advanced electronics, our components ensure smooth operation and long service life, even under high heat and vibration.
Whether you’re maintaining a modern 992 or restoring a classic 911, these manufacturer-quality components are essential for achieving consistent fuel delivery and flawless performance.
What Do Fuel Pressure Valves, Sensors & Regulators Do?
These components ensure that the engine receives the correct fuel pressure to maintain stable combustion, power output, and throttle response.
Core Functions:
- Fuel
Pressure Regulator: Maintains steady pressure in the fuel rail to
match engine demand.
- Pressure
Sensor: Monitors and relays fuel pressure data to the ECU for precise
adjustments.
- Fuel
Damper: Smooths out fuel pulses and pressure fluctuations.
- Pressure Valve: Prevents over-pressurisation, protecting the fuel system.
Together, they ensure smooth idling, responsive acceleration, and consistent power delivery — key for both performance and fuel economy.
Why Do Fuel Pressure Components Fail?
Due to constant exposure to heat, vibration, and fuel contaminants, these components can wear out over time, leading to erratic fuel pressure and performance issues.
Common Causes of Failure Include:
- Clogging
or contamination from dirty fuel or debris.
- Internal
diaphragm wear in regulators or dampers.
- Corrosion
from moisture or ethanol-based fuels.
- Electrical
failure in pressure sensors.
- Vacuum leaks causing incorrect fuel pressure readings.
Symptoms of failure include rough idling, poor acceleration, stalling, fuel odours, or a check engine light indicating a pressure-related fault.
Why Replace the Fuel Pressure Components?
Replacing worn or malfunctioning fuel pressure components restores proper system regulation, improving performance, fuel efficiency, and drivability. Our precision-fit, manufacturer-quality replacements are built for accuracy and durability, ensuring long-term reliability.
Key Benefits:
- Restores stable fuel pressure and consistent delivery.
- Improves performance, acceleration, and throttle response.
- Reduces fuel consumption and emissions.
- Prevents damage to injectors and fuel pumps.
- Crafted from corrosion-resistant, heat-tolerant materials.
- Direct-fit compatibility for Porsche models of all eras.
Ideal for regular maintenance, rebuilds, and performance upgrades, these components ensure your Porsche operates with the precision it was designed for.
Highlights:
- Comprehensive selection of Porsche fuel pressure regulators, valves, dampers, and sensors.
- Precision-engineered for exact pressure control and reliability.
- Durable construction for long service life.
- Ensures stable fuel delivery and efficient combustion.
- Perfect for performance tuning, restorations, or maintenance.
- Compatible with classic and modern Porsche models