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- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 928S4 5.0L 1987-92
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