Running a Spartan chassis with a Cummins ISX12? Then one of the unsung heroes (or villains, when it fails) in your emissions system is the DEF head. The Spartan Cummins ISX12 DEF Head Unit, OEM 10071997, plays a pivotal role in ensuring your aftertreatment system operates smoothly—without it, you’re inviting error codes, derates, or even engine shutdowns.
-
Monitors DEF fluid parameters: temperature, concentration, and level, feeding the engine control module real-time data
-
Ensures proper dosing of DEF into the exhaust stream so the SCR (Selective Catalytic Reduction) system can reduce NOx emissions
-
Designed specifically to match OEM tolerances (10071997), providing reliable plug-and-play compatibility
-
Helps prevent emissions faults, engine derates, and system warnings caused by inaccurate or missing sensor data
-
Built to endure harsh operating conditions: thermal cycling, vibration, and exposure to DEF chemicals
-
Straightforward to replace in the field—minimizing downtime and getting you back on the road sooner
When the DEF head in a Spartan Cummins ISX12 begins to degrade, you don’t always see it coming. One day you're running fine, the next you’re flagged with system errors. Keeping the OEM 10071997 unit in working order ensures your vehicle remains emissions-compliant and reliable. Make it a priority in your maintenance schedule—you’ll avoid headaches and costly repairs down the road.

















































































































































































































































