Meeting current EURO emissions standards is not the job of a single component – it’s the combined function of several systems working together: exhaust gas recirculation reducing combustion temperature and NOx formation, SCR systems converting NOx using precisely dosed AdBlue, and oil cooling systems managing the additional thermal load these processes create. When any one of these components fails, the consequence isn’t limited to a fault code – it can mean coolant contamination, accelerated engine wear, or complete loss of emissions compliance.
HEPU® Emission & Aftertreatment Systems brings together the components responsible for this function: EGR and EGR coolers, oil coolers, AdBlue dosing modules, and AdBlue tanks – each manufactured to OE specification.
EGR systems route a portion of exhaust gas back into the intake to lower combustion temperature and reduce NOx formation – but this also means the EGR cooler, which uses engine coolant to cool the recirculated exhaust gas, sits at the intersection of the exhaust and cooling systems. When an EGR cooler develops an internal leak, the symptoms mimic a blown cylinder head gasket almost exactly: boiling coolant in the expansion tank, combustion gas bubbles in the cooling system, and fluid loss without any visible external leak. Diagnosing this correctly – rather than proceeding straight to cylinder head work – saves hours of unnecessary labour and significant cost.
The same emissions systems that reduce NOx also accelerate soot contamination in engine oil, placing additional demand on oil cooling performance. And AdBlue dosing components, responsible for metering urea solution into the exhaust stream with high precision, are highly sensitive to fluid purity – low-quality AdBlue is one of the most common causes of dosing module and injector failure in modern diesel applications.
Use the HEPU® parts catalogue to find the correct emission and aftertreatment component for your application.
