Bosch 68066040AA Turbocharger Boost Pressure Sensor

The Bosch 68066040AA is a precision turbocharger boost pressure sensor designed to monitor intake manifold pressure in turbocharged diesel engines. This OEM-quality sensor measures absolute air pressure and temperature to provide the engine control unit with critical data for optimizing fuel injection, controlling turbocharger boost levels, and reducing emissions.

Key Features:

• OEM part number 68066040AA with Bosch internal number 0261230193
• Direct replacement for diesel turbo applications
• Measures absolute pressure for precise engine management
• Integrated temperature sensor for accurate air density calculations
• 3-terminal electrical connector design
• Engineered for durability in high-temperature turbocharger environments

This sensor installs in the intake manifold between the turbocharger and engine, where it continuously monitors boost pressure to help the ECU maintain optimal air-fuel ratios and prevent overboost conditions. Cross-references include OEM numbers A0061531528, A0061539928, and 71775581.