In diesel-powered equipment, precision in your emissions aftertreatment system isn’t optional—it’s essential. The Perkins DEF Head Unit (OEM T434606) acts as the eyes and regulator of your DEF (Diesel Exhaust Fluid) system. For users running Perkins engines, a proper DEF head ensures you're getting accurate fluid level, temperature, and urea concentration readings. When that module drifts or fails, the results are often error codes, emissions warnings, or even engine derates—problems that cost both downtime and money.
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Monitors DEF fluid level, temperature, and concentration and relays correct feedback to the engine control module
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Regulates the dosing of DEF into the exhaust stream to support SCR (Selective Catalytic Reduction) in reducing NOx emissions correctly
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Built to match OEM T434606 specifications, ensuring compatibility, proper fit, and calibration with Perkins systems
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Helps prevent fault codes, emissions warnings, and engine derates that stem from bad or inconsistent sensor signals
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Constructed to handle harsh operating environments: vibration, temperature variations, and exposure to DEF fluid
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Simplifies service with easier install and trusted durability
Having a reliable DEF head unit like the OEM T434606 means your Perkins engines stay clean, compliant, and dependable. Skip the surprises—investing in a high-quality DEF monitor now protects you later from service disruptions and keeps your emissions chain solid.