BRAND NEW *OEM Quality* FUEL RAIL PRESSURE SENSOR to suit Alfa Romeo 939 932 Brera Spider GT 156 159

Do not let a degrading sensor compromise your European driving experience with erratic flat spots or sudden rough idling. As a local Aussie family business we understand that your Alfa Romeo deserves factory-spec electronic precision. We source our premium sensors directly from global OEM manufacturers to guarantee flawless communication with your vehicle ECU. Ships Daily from our Cranbourne VIC Warehouse. Unsure about fitment? Contact our expert team for friendly advice.

REPLACES PART NUMBERS

55192238
46743211
0261545074
0261545053
0261545006

PACKAGE INCLUDES:

1 X OEM Quality FUEL RAIL PRESSURE SENSOR. (3-PIN PLUG. Oval Connector). Fits on High-pressure Side of Rail

European direct injection platforms are highly sensitive to sensor voltage. Please safely inspect your original fuel rail sensor barrel to confirm the matching Bosch cross reference number. This premium unit utilizes a specific 3-pin connector configuration designed for exact JTS rail geometry.

A fuel rail pressure sensor is a component in a vehicle's fuel system that measures and monitors the fuel pressure in the fuel rail, a pipe or tube that delivers fuel to the fuel injectors. This sensor is an essential part of modern fuel injection systems commonly found in gasoline and diesel engines. Its primary purpose is to provide crucial data to the engine control unit (ECU) or engine control module (ECM) so that the engine can operate efficiently and safely.

Our Fuel Pressure Regulators are:

Application specific for the perfect fit and form
Direct-fit OE replacement ensures proper fit, form, and function, which leads to a trouble-free installation
Premium components and durable materials withstand harsh engine conditions to resist leaks
Designed and manufactured to stringent quality standards at a certified facility, so you can install with confidence
Undergoes extensive testing and validation for proper performance and peak reliability

COMMON QUESTIONS

1. What are the symptoms of a failing sensor on an Alfa JTS?
A worn sensor struggles to monitor rail pressure accurately forcing the vehicle into limp mode or cutting fuel delivery. This causes a loss of power rough idling at traffic lights and triggers the common P0191 diagnostic trouble code.

2. Does this sensor require calibration?
No this is a direct plug-and-play unit designed to perfectly match factory specifications. However you must ensure the vehicle battery is disconnected during fitting to reset the basic sensor circuit loop.

3. How fast is shipping?
We ship daily directly from Cranbourne VIC. Orders placed before 2pm typically leave the warehouse the exact same day.

COMPATIBLE VEHICLES

Alfa Romeo 159 Type 939 (2005-2011) - 1.9L and 2.2L JTS Engines
Alfa Romeo Brera Type 939 (2006-2011) - 2.2L JTS Engines
Alfa Romeo Spider Type 939 (2006-2011) - 2.2L JTS Engines
Alfa Romeo 156 Type 932 (2002-2005) - 2.0L JTS Engines
Alfa Romeo GT Type 937 (2003-2010) - 2.0L JTS Engines
Alfa Romeo GTV Type 916C (2003-2005) - 2.0L JTS Engines
Fiat Various Direct Injection Petrol Applications

What is the difference between a fuel rail pressure sensor and a fuel pressure regulator?

The fuel rail pressure sensor is an electronic sensor that monitors fuel pressure in the rail and reports this data to the ECU in real time. The ECU uses the sensor reading to adjust injector pulse width and pump output. The fuel pressure regulator is a mechanical or electronic valve that physically controls and limits fuel pressure by diverting excess fuel. They work together - the regulator sets the pressure and the sensor monitors it.

What are the symptoms of a faulty fuel rail pressure sensor?

A faulty fuel rail pressure sensor sends incorrect pressure data to the ECU, causing it to miscalculate fuel delivery. Common symptoms include hard starting, engine stalling at idle or under load, poor fuel economy, hesitation under acceleration, engine entering limp mode on diesel vehicles, and a Check Engine light with fuel pressure codes P0190 to P0194. On common rail diesel engines the symptoms can be severe as rail pressure management is critical.

What are the symptoms of a faulty fuel pressure regulator?

A failing regulator causes persistent fuel pressure problems. A regulator that allows pressure to rise too high causes the engine to run rich, producing black smoke, high fuel consumption, and fuel smell from the engine bay. A regulator that allows pressure to drop too low causes hard starting, stalling, hesitation, and loss of power under load. Both conditions affect injector performance and can cause misfires and catalyst damage over time.

Can I drive with a faulty fuel rail pressure sensor or regulator?

You can drive short distances but it is not recommended. A faulty pressure sensor may cause the engine to run incorrectly rich or lean depending on the failure mode. A faulty regulator causing low pressure can leave the vehicle stranded if pressure drops below the minimum required for starting. Continued driving with a fuel pressure fault can also damage fuel injectors and catalytic converters.

How do I know if my fuel pressure problem is the sensor or the regulator?

A faulty sensor will produce incorrect ECU readings without affecting actual fuel pressure - you can verify this by checking actual fuel pressure with a mechanical fuel pressure gauge while the engine is running. If the mechanical gauge reads correctly but the ECU is reporting an incorrect value, the sensor has failed. If the mechanical gauge also reads incorrectly, the fault is in the regulator, pump, or fuel system rather than the sensor.

Do fuel pressure sensors and regulators need programming after replacement?

No programming is required for either component. Both are direct replacement parts that plug directly in. Clear stored fault codes with an OBD2 scanner after replacement and verify the fuel pressure reading in live data matches the specification for your engine. On common rail diesel engines allow several minutes of running time for the system to stabilise before checking live data values.

Identification
SKU	RPS129-55192238
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	RPS129
Reference OEM Number	55192238
Other OEM Numbers	55192238, 46743211
Related Part Numbers	RPS129, V25-72-1190, FRS-013, PRPS1009
Trade Part Numbers	BOSCH: 0261545006, BOSCH: 0261545011
Product Specifics
Product Type	SENSOR
Sensor Type	Fuel Rail Pressure Sensor
Number of pins	3 -pin connector
Connector Shape	oval
Socket colour	Black
Supplementary Article Info	Fits High Pressure Side
Mounting Type	Bolted
Fuel Mixture Formation	Direct Injection
Other Details
Note	Always verify fitment using your vehicle's OEM part number.