When your vehicle uses a Cummins engine with the PowerTraxx setup, one of the components that quietly keeps your emissions system running correctly is the DEF (Diesel Exhaust Fluid) head unit. The OEM TR1700-596-01 version ensures fluid level, temperature, and dosing data stay accurate. If this unit fails or drifts, you could face warning lights, SCR system errors, or even engine derates — all of which can bring operations to a halt.
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Monitors DEF tank level, fluid temperature, and urea concentration (quality), sending precise data to the engine control module
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Controls DEF dosing into the exhaust stream so that the SCR (Selective Catalytic Reduction) system can reduce NOx emissions properly
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Built to the OEM TR1700-596-01 specification to guarantee compatibility with PowerTraxx Cummins configurations
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Helps prevent emissions warning codes, system faults, and engine power derates triggered by bad or inconsistent sensor readings
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Designed to stand up to harsh conditions — vibration, thermal cycling, and exposure to DEF’s chemical properties
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Replacement is made simpler when using an OEM-matched unit, reducing downtime and restoring system integrity
Because the DEF head unit plays a central role in maintaining emissions accuracy, replacing it with the correct version is not just a repair—it’s restoring the backbone of your aftertreatment system. The PowerTraxx Cummins DEF Head Unit (OEM TR1700-596-01) gets you back on track with confidence, keeping your vehicle compliant and reliable on every route.