Cummins 4384340 Humidity Sensor

Product Overview

Ensure optimal combustion and emission control with our high-precision Humidity and Ambient Temperature Sensor. Specifically engineered to replace Cummins 4384340 and HPP816E032, this sensor provides real-time atmospheric data to the Engine Control Unit (ECU). By monitoring relative humidity and intake air temperature, it allows the engine to adjust fuel injection and EGR (Exhaust Gas Recirculation) rates, maximizing fuel efficiency while reducing NOx emissions.

Technical Specifications

• Part Name: Humidity & Ambient Temperature Sensor

• Connector Type: Multi-pin sealed automotive connector

• Operational Range: High-sensitivity detection for extreme environments

• Housing: Corrosion-resistant, heavy-duty composite for vibration resistance

Applications & Vehicle Compatibility

This sensor is primarily used in heavy-duty commercial vehicles and industrial engines. It is a direct fit for:

• Engines: Cummins ISX12G, ISL, QSB, QSL, and QSX series.

• Fuel Systems: Specifically compatible with Woodward fuel supply and injection systems.

• Fuel Types: Natural Gas (CNG/LNG) and Diesel heavy-duty truck engines.

• Common Makes: Freightliner, Kenworth, Peterbilt, and DAF trucks equipped with Cummins power plants.

OE Reference Cross-Code

To ensure a perfect fit, this part replaces or is compatible with the following reference numbers:

• Cummins: 4384340

• Manufacturer Refs: HPP816E032, FR2107