Gillig Cummins DEF Head Unit

Emission System Essential: Gillig Cummins DEF Head Unit (OEM 83-01151-000)

What is it?
The Gillig Cummins OEM 83-01151-000 is a precision-engineered DEF (Diesel Exhaust Fluid) Head Unit designed specifically for Cummins-powered Gillig transit buses. It’s responsible for accurately monitoring DEF levels and ensuring correct fluid delivery into emissions systems, helping maintain clean operation and regulatory compliance.

Why choose OEM 83-01151-000?
Manufactured to Gillig and Cummins OEM standards, this DEF Head Unit delivers the fit, reliability, and durability you expect from genuine parts. Opting for OEM 83-01151-000 helps prevent costly malfunctions—such as sensor faults or SCR system errors—that can lead to engine derating or downtime. Trust in a solution built for your vehicle’s emission control requirements.

Key Benefits
✅ Engineered specifically for Gillig buses with Cummins engines
✅ Precise DEF monitoring and consistent SCR system operation
✅ Helps avoid emissions-related engine derates or fault codes
✅ Built to tolerate temperature extremes and fluid exposure
✅ Direct-fit OEM construction for efficient, hassle-free replacement

Applications
Ideal for Gillig transit vehicles that use Cummins engines and employ SCR (Selective Catalytic Reduction) systems. Whether your fleet includes clean-diesel, hybrid-diesel, or CNG models, this part ensures smooth emissions control during extended routes.

Installation Notes
Before installation, power down the engine and allow it to cool fully. Clean the area around the DEF tank and unit to prevent contamination. Replace any worn seals or gaskets, then install the new unit and torque to Cummins or Gillig specifications. Afterward, run a system check to confirm proper DEF level detection and monitor for error codes or fluid leaks.

Final Thoughts
When your Gillig fleet demands dependable DEF system operation, the OEM83-01151-000 DEF Head Unit offers a reliable replacement you can trust. With OEM precision, compatibility, and long-life performance, it helps keep your buses emission-compliant and on schedule. Tamerx has this part in stock and ready to ship.