Bosch 4000psi Fluid Pressure and Temperature Sensor Thread: M10 x 1.0

High-Pressure Precision: Bosch 4000psi Dual Parameter Sensor

In high-pressure fluid systems—specifically direct-injection fuel rails, high-pressure hydraulics, or nitrous systems—standard sensors lack the resolution and physical strength to survive. The Bosch 4000psi Fluid Pressure and Temperature Sensor is a professional-grade integrated solution designed for extreme duty cycles. Featuring a robust M10 x 1.0 thread, this sensor provides simultaneous reporting of both fluid pressure and fluid temperature through a single port. It is a mandatory component for builders of DI-equipped LS-swaps and high-power nitrous racing engines where absolute detonation protection is required through pressure-based fueling compensations.

Engineering Principles: Integrated Piezoresistive Sensing

The sensor utilizes an advanced piezoresistive sensing element for pressure and an integrated NTC thermistor for temperature. This Analogue-to-Digital interface allows the standalone ECU integration to monitor manifold-referenced fuel rail pressures up to 4060 PSI. This resolution is vital for modern engine management systems (such as Haltech Elite or Nexus) to calculate the mass flow of direct injectors accurately. The -40°C to 140°C temperature range ensures that the ECU can also compensate for fluid density changes as fuel or hydraulic oil heats up, providing a bedrock of consistency for your fuel map calibration.

Operational Benefits for Competition Systems

Combining two measurements into one M10 x 1.0 port significantly reduces plumbing complexity and potential leak points in high-pressure systems. For motorsport applications, this sensor enables sophisticated “Safety Shutdown” logic; if the ECU detects a sudden drop in direct-injection rail pressure, it can instantly retard Ignition Timing or cut fuel to prevent a catastrophic lean-out. Additionally, the temperature data is essential for monitoring the efficiency of fluid coolers or identifying pump cavitation. The sensor’s internal circuitry is shielded against EMI, ensuring that the critical high-pressure data remains pristine even when routed near high-voltage ignition components.

Fitment and Component Integration

This high-pressure sensor is designed for harness integration in professional race vehicles and includes the matching plug, pins, and seals. Due to the metric M10 thread, an adaptor (like HT-010922) may be required for installation into 1/8 NPT ports. It is universally compatible with standalone ECUs that support a 0-5V pressure scale and NTC temperature curves. Proper installation is critical: the sensor should be mounted in a location free from excessive engine-block vibration, often requiring a remote-mount hose (like HT-039103) in high-vibration environments to protect the internal sensing diaphragm from mechanical fatigue.

Technical Specifications Table

Summary & Includes

The Bosch 4000psi Dual Sensor is the ultimate data acquisition node for high-pressure systems. Includes: 1 x Bosch Dual Parameter Sensor and a complete Connector Set. Note: Crucial for direct-injection fueling and high-pressure hydraulic monitoring.