The Bosch Motorsport PST-F-2 measures both fuel rail pressure (0–280 bar absolute) and fuel temperature (−40 to +140 °C) from a single M10×1 sensor, replacing two separate sensor ports on a GDI fuel rail with one fitting. It is the high-pressure counterpart to the PST-1/3/4 air and oil sensors — same output principle, different pressure range and medium.
GDI fuel rail pressure on a motorsport engine operates between 50 and 200+ bar depending on engine speed and load strategy. The PST-F-2’s 280 bar upper range covers the full operating window with headroom for transient over-pressure events. The ratiometric output characteristic (0.5 V = 0 bar, 4.5 V = 280 bar; sensitivity 14.3 mV/bar) connects directly to any ECU analog input calibrated for this curve.
The temperature output is NTC-type — a 4.6 kΩ pull-up resistor between the temperature pin and the 5 V supply is required for correct reading. The 0.2 V and 4.8 V thresholds serve as out-of-range diagnostic check limits in ECU calibration.
A mating 4-pin connector kit is stocked separately.
Technical Specifications
| Property | Value |
|---|---|
| SKU / Part number | 0261545115 (0 261 545 115-U5G) |
| Pressure type | Absolute |
| Pressure range | 0 – 280 bar |
| Pressure sensitivity | 14.3 mV/bar |
| Output at 0 bar | 0.5 V |
| Output at 280 bar | 4.5 V |
| Signal check — low threshold | < 0.2 V = out of range |
| Signal check — high threshold | > 4.8 V = out of range |
| Temperature range | −40 to +140 °C |
| Temperature output | NTC (4.6 kΩ pull-up required) |
| Supply voltage | 5 V |
| Thread | M10×1 |
| Seat type | 45° cone |
| Connector | Compact 4-pin Bosch |
| Pinout | 1 = GND, 2 = Pressure out, 3 = Temperature out, 4 = 5V supply |
| Fuel compatibility | Gasoline, E26, E85 |
Applications
| Application | Notes |
|---|---|
| GDI fuel rail pressure | Primary application — 50–200+ bar operating window |
| HP pump control feedback | Rail pressure loop for high-pressure pump PWM duty |
| Motorsport direct injection | Combined P+T from single fitting |
Related Products
- PST-F-2 Connector Kit — mating 4-pin connector with pins and seals
- HPI5 Injection Power Stage — GDI injector driver companion to PST-F-2 installations
- MS 6.3 EVO ECU — GDI-capable ECU with direct sensor input
- MS 6.4 EVO ECU — GDI-capable ECU with 38 analog inputs
- Bosch Motorsport PST-4 — 0.4–4 bar for boost and oil pressure
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