Cummins ISB 6.7L DEF Head Unit 2013-2021: OEM 213330

Keep DEF Flowing Right: Cummins ISB 6.7L DEF Head Unit – OEM 213330

What is it?
The Cummins DEF Head Unit (OEM 213330) is a genuine component that sits at the top of the Diesel Exhaust Fluid (DEF) tank. It includes sensors and fluid connections that monitor DEF level, temperature, and supply flow to the dosing system. This unit ensures the proper delivery and regulation of DEF to the engine’s aftertreatment system.

Why Choose OEM 213330?
OEM 213330 is engineered for Cummins ISB 6.7L engines from 2013 to 2021, delivering accurate readings and reliable DEF supply. Unlike aftermarket versions, this OEM head unit maintains proper sensor calibration and integration with the engine control module (ECM), preventing false codes and system failures.

Key Benefits
✅ Direct-fit for Cummins ISB 6.7L engines from 2013–2021—no modifications required.
✅ Monitors and regulates DEF fluid levels, temperature, and supply flow.
✅ Built to withstand chemical exposure and harsh operating environments.
✅ Meets Cummins OEM standards for emissions system communication.
✅ Installs easily into factory DEF tanks with plug-and-play sensor connections.

Applications
This DEF head unit is used in Cummins ISB 6.7L-equipped vehicles such as medium-duty trucks, buses, and off-road equipment. It plays a key role in managing DEF system operation, ensuring accurate fluid data and dependable delivery for proper SCR function and emissions compliance.

Installation Notes
Always begin installation with the vehicle off and battery disconnected. The DEF tank should be drained or partially emptied before removing the old head unit. Carefully inspect the tank, seals, and connectors before installing the new unit. Use Cummins-approved procedures to ensure leak-free operation and sensor calibration.

Final Thoughts
The Cummins OEM 213330 DEF Head Unit is essential for maintaining accurate DEF system function on ISB 6.7L engines. With OEM-quality construction and exact-fit installation, it helps prevent system errors, ensures compliance, and keeps your engine operating reliably.