Cummins ISB, ISL Pressure Sensing Tube 2017-2024: OEM 5418426

Essential Pressure Signal Line for Cummins ISB & ISL Engines (2017–2024)

What is it?
The Cummins ISB & ISL Pressure Sensing Tube (2017–2024), identified by OEM part number 5418426, is a pressure signal conduit used on Cummins ISB and ISL diesel engines manufactured from 2017 through 2024. This tube carries differential or absolute pressure signals from intake/exhaust locations to onboard sensors, allowing the engine control unit (ECU) to accurately monitor combustion and emissions system conditions.

Why choose this Pressure Sensing Tube?
Built to meet Cummins’ original specifications for the ISB and ISL platforms, this pressure sensing tube ensures correct routing, fitment, and signal integrity for pressure sensors. When the sensing tube becomes damaged, cracked, blocked, or detached, it can deliver faulty pressure feedback to the ECU, which may cause incorrect combustion adjustment, unexpected system warnings, or irregular emissions behavior. Using the correct OEM-specified tube helps maintain reliable pressure communication and supports coordinated engine and aftertreatment system responses.

Key Benefits
✅ Engineered for Cummins ISB & ISL engines (2017–2024)
✅ Enables accurate pressure feedback to onboard sensors
✅ Supports coordinated combustion and emissions decisions
✅ Direct replacement — no modifications required
✅ Built to withstand intake and exhaust thermal conditions

Applications
This pressure sensing tube is suitable for medium- and heavy-duty commercial vehicles and equipment equipped with Cummins ISB or ISL engines produced between 2017 and 2024. Typical applications include delivery trucks, vocational rigs, regional freight trucks, construction equipment, and industrial diesel platforms where pressure monitoring is critical to performance and emissions control.

Installation Notes
Before servicing, ensure the engine and associated intake/exhaust components are fully cooled to prevent injury. Verify the existing tube is free from severe contamination or damage before removal. Install the replacement tube by routing it correctly between the pressure source and sensor connection, making sure all fittings are secure. After installation, clear any stored fault codes and confirm proper pressure readings using diagnostic tools.

Final Thoughts
If your Cummins ISB or ISL-equipped vehicle is displaying pressure-related fault codes, inconsistent torque response, or unexpected emissions system alerts, replacing a compromised pressure sensing tube with the correct OEM component can help restore accurate pressure feedback and smoother engine operation. The Cummins ISB & ISL Pressure Sensing Tube (OEM 5418426) plays a key role in dependable pressure monitoring and coordinated engine management.