The Bosch Motorsport PST-F 1 is a combined 10 bar pressure and temperature sensor that replaces two separate sensors in oil, fuel, and coolant circuits with a single M10×1 fitting. Sold under Bosch Motorsport ordering number 0261 544 01F (Bosch automotive/OEM equivalent 0281006414), it measures liquid gauge pressure (0–10 bar relative) and fluid temperature through independent output channels on a 5-pin Bosch Trapez connector, letting the ECU or data logger acquire both variables from a single harness connection.
The 10 bar range covers engine oil system pressures (typically 2–8 bar at operating conditions), low-side fuel supply pressure, and gearbox/differential oil pressure. Pressure is measured as gauge (relative to atmosphere): the ratiometric output runs from 0.5 V at 0 bar to 4.5 V at 10 bar on a 5 V supply. Both outputs are analog — compatible with any ECU or data acquisition system with 5 V analog inputs.
Technical Specifications
| Property | Value |
|---|---|
| Model | Bosch Motorsport PST-F 1 |
| Motorsport order number | 0261 544 01F |
| Bosch internal designation | F02U.V0U.194-01 |
| OEM / automotive equivalent | 0281006414 |
| Pressure range | 0 – 10 bar gauge (relative) / 145 psi |
| Pressure element | Piezoresistive, silicon diaphragm |
| Temperature range | −40 to +150 °C (160 °C max, 250 h) |
| Temperature element | NTC |
| Supply voltage | 4.75 – 5.25 V (nominal 5 V) |
| Supply current | ≈ 10 mA |
| Output | 0.5 – 4.5 V ratiometric analog |
| Thread / seat | M10×1 male, 45° sealed cone, 27 mm hex |
| Tightening torque | 40 Nm |
| Connector | Bosch Trapez 5-pin (mating kit F02U.B00.751-01) |
| Weight | 36 g |
| Media | Engine oil, gearbox/transmission oil, petrol, diesel, E85, water/coolant |
Connector Pinout
| Pin | Signal |
|---|---|
| 1 | Not used |
| 2 | Pressure signal |
| 3 | Supply +5 V |
| 4 | Ground (0 V) |
| 5 | Temperature signal |
Electrical Output & Calibration
The pressure output is ratiometric to the 5 V supply, with a sensitivity of 400 mV/bar and an offset of 500 mV at Us = 5 V. Configure it in the ECU or logger as a linear 0–10 bar gauge transducer:
V_out = 0.5 V + (0.4 V/bar × pressure)
| Output voltage | Gauge pressure |
|---|---|
| 0.5 V | 0 bar |
| 2.5 V | 5 bar |
| 4.5 V | 10 bar |
The temperature channel is an NTC element — map it to engineering units using the Bosch NTC resistance/temperature characteristic in your ECU or data logger.
Part Numbers & Cross-Reference
| Number | Scheme |
|---|---|
| 0261 544 01F | Bosch Motorsport — current ordering number |
| 0261 230 482 | Bosch Motorsport — superseded |
| 0261 230 340 | Bosch Motorsport — superseded |
| 0281006414 | Bosch automotive/OEM equivalent — fuel only (not validated for oil or coolant) |
| F02U.V0U.194-01 | Bosch internal designation |
Applications
| Application | Notes |
|---|---|
| Engine oil pressure + temperature | Main oil circuit — feed line or gallery |
| Gearbox/transmission oil | Sequential gearbox and differential monitoring |
| Fuel pressure + temperature | Low-side/return PFI fuel circuit |
| Coolant/water pressure | Cooling system pressure monitoring |
| Dry sump oil pressure | Combined P+T on the pressure circuit |
Mating Connector
The sensor mates with the Bosch Trapez 5 Pole Connector KIT for Pressure/Temp sensors (F02U.B00.751-01) — 5-pin Trapez connector body, 4 contacts, 4 wire seals, and 1 blank seal for the unused pin 1.
Related Products
- Bosch Motorsport Combined Pressure Sensor PST 4 (0.4 to 4 bar) — 0.4–4 bar combined P+T for boost and low-pressure oil
- Bosch Motorsport NTC M12-H — standalone temperature sensor if pressure is monitored elsewhere
FAQ
Does it measure gauge or absolute pressure?
Gauge (relative) — it reads 0 bar at atmospheric pressure. The output follows V = 0.5 + 0.4 × bar, so 0.5 V = 0 bar and 4.5 V = 10 bar.
How do I calibrate it in my ECU?
Configure a linear 0–10 bar gauge transducer: 0.5 V = 0 bar, 4.5 V = 10 bar, sensitivity 400 mV/bar on a 5 V ratiometric supply. Map the temperature channel using the Bosch NTC resistance/temperature characteristic.
Which connector mates with the sensor?
The Bosch Trapez 5-pin connector kit, part F02U.B00.751-01 (linked above). Pin 2 carries the pressure signal, pin 3 +5 V, pin 4 ground, pin 5 the temperature signal; pin 1 is unused.
Which fluids can it measure?
Engine oil, gearbox/transmission oil, petrol, diesel, E85, and water/coolant. Bosch has not validated other media.
Is 0281006414 the same sensor as 0261 544 01F?
They share the same body, thread, connector, and 0–10 bar output, but differ in media validation. The Bosch Motorsport 0261 544 01F supplied here is validated for engine oil, gearbox/transmission oil, fuel, and water/coolant. The automotive 0281006414 is a fuel-only part (Ford fuel pressure/temperature application) and is not suitable for oil or coolant circuits — for those, use the motorsport 0261 544 01F.
How does it differ from the PST 1/3/4 sensors?
The PST 1/3/4 sensors are low-pressure boost/manifold sensors (1–4 bar). The PST-F (“fluid”) series is for liquids — PST-F 1 is the 10 bar version; PST-F 2 covers high-pressure fuel at 280/350 bar.
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