4394754RX | Genuine Cummins® Inlet Catalyst Module 15L ISX/QSX

Transmit pressure to a sensor

• It carries pressure from a system (like exhaust or air) to a pressure sensor for measurement.

Protect the sensor

• Keeps the sensor away from extreme heat, vibration, or contamination.

Help monitor system performance

• Allows the vehicle or machine computer to monitor pressure levels and detect problems.

Support emissions systems

• In diesel engines, it helps measure exhaust pressure around the Diesel Particulate Filter (DPF) to determine when cleaning (regeneration) is needed.

Improve engine control

• Accurate pressure readings help the engine computer adjust fuel delivery, airflow, and emissions systems.

Check Engine Light

• The engine computer may detect incorrect pressure readings and turn on the warning light.

DPF warning light (in diesel vehicles)

• If the tube is used in the Diesel Particulate Filter system, the truck may show a DPF or emissions warning.

Poor engine performance

• The engine may feel weak, sluggish, or lose power.

Frequent or failed DPF regeneration

• Incorrect pressure readings can cause the system to regenerate too often or not at all.

Excessive exhaust smoke

• Poor pressure measurement may lead to improper fuel and emissions control.

Visible damage to the tube

• The tube may be:

• Cracked

• Blocked with soot

• Melted from exhaust heat

• Disconnected or leaking

Incorrect pressure sensor readings

• Diagnostic scans may show abnormal pressure values.