Cummins DEF Head Unit : OEM ASP-908-2317-297

Restore Emissions System Accuracy with a Trusted DEF Head Unit

What Is It?

The Cummins DEF Head Unit (OEM ASP-908-2317-297) is an emissions-critical component designed to manage Diesel Exhaust Fluid (DEF) within Selective Catalytic Reduction (SCR) systems. This unit integrates DEF level sensing, temperature monitoring, and fluid suction into a single assembly, making it essential for precise system feedback and fluid delivery.

Why Choose OEM ASP-908-2317-297?

The OEM ASP-908-2317-297 is built to exact Cummins specifications, offering a reliable, factory-matched fit for your DEF system. Using this OEM unit ensures accurate communication with the engine control module and reduces the likelihood of error codes, system malfunctions, or DEF-related issues that can impact operation.

Key Benefits

✅ Integrated Functionality: Monitors DEF level, temperature, and draws fluid from the tank
✅ OEM-Certified Fit: Built to Cummins standards for compatibility and reliability
✅ Resistant Construction: Withstands DEF exposure, vibration, and extreme operating conditions
✅ Quick Installation: Fits directly into factory DEF tanks and connects to original wiring
✅ Helps Maintain Compliance: Supports proper DEF dosing and emissions system health

Applications

This DEF head unit is ideal for Cummins-powered vehicles using SCR systems, including commercial trucks, buses, construction equipment, and off-highway machinery. It supports model years and applications requiring precision DEF management and emissions data accuracy.

Installation Notes

Before installation, check the DEF tank, connectors, and suction area for contamination. The unit is a direct-fit replacement and requires no special tools. Once installed, technicians should conduct a diagnostic scan to clear fault codes and confirm successful communication with the vehicle’s ECU.

Final Thoughts

The OEM ASP-908-2317-297 DEF Head Unit is a reliable solution for restoring full DEF system function in Cummins SCR applications. With its precise fit and multi-function design, it helps ensure uninterrupted emissions control and system stability—essential for keeping your equipment road-ready and compliant.