Mercedes-Benz (2007-10) “46011421079” EGR Cooler

Precision Remanufacturing for Early EPA07 SystemsThe Mercedes-Benz 46011421079 EGR Cooler is a fully remanufactured exhaust gas recirculation unit built to OEM standards for 2007–2010 MBE4000 and early DD15 engines. Designed during the transition between Mercedes-Benz’s heavy-duty MBE program and Detroit Diesel’s DD-series launch, this cooler restores the factory performance required by Freightliner Columbia, Century, and early Cascadia applications.Each core is completely disassembled, inspected, and chemically treated to remove embedded carbon, oil residue, and coolant scaling. Turbo Kings’ remanufacturing process begins with a hot alkaline soak using a proprietary detergent blend formulated to loosen soot and sludge without attacking the cooler’s brazed joints or internal fins. The goal is to restore full gas-flow and coolant-flow uniformity throughout every passage.Following the detergent bath, each unit enters a 48-hour acid descaling cycle using a balanced citric and phosphoric solution that removes oxidation and mineral buildup from years of service. This descaling restores the metal’s thermal conductivity and prevents hot-spot development during high-load operation. The component is then neutralized and oven-cured, producing a clean, corrosion-free surface ready for inspection and assembly.All welds, joints, and seams are visually and pressure-tested. Where fatigue or pitting is found, the unit undergoes precision TIG-weld repair using stainless filler rod matched to OEM alloy grade. Once re-assembled, every cooler is pressure-tested to 125 PSI to confirm complete separation between coolant and exhaust gas paths — ensuring durability and emissions compliance equal to or better than new.What Makes a Turbo Kings Rebuild DifferentTurbo Kings’ process goes beyond basic cleaning. Each EGR cooler is engineer-validated for internal flow balance, not just leak-tested. Our alkaline and acid stages operate on strict temperature and time parameters, guaranteeing carbon removal without metal thinning or erosion. Welded surfaces are resurfaced and stress-relieved after TIG repair to prevent premature cracking.Every cooler receives a final dimensional check for flange flatness and port geometry to ensure perfect bolt-up and gasket seal on the MBE4000 head. By restoring both the structure and the thermal efficiency, Turbo Kings guarantees consistent exhaust-gas temperatures and coolant recovery under heavy-duty cycles.Why Fleets and Owner-Operators Trust Turbo KingsOEM Fitment Guarantee – Direct replacement for Mercedes-Benz MBE4000 / Early DD15 (2007–2010)Pressure-Tested to 125 PSI – Verifies coolant/exhaust isolation under loadChemical Dual-Stage Cleaning – Removes soot, sludge, and scalingTIG-Weld Reinforced – Repairs high-stress joints to OEM tolerance6-Month Warranty – Coverage for unlimited mileage, labor-backed by Turbo Kings quality controlEach unit is serialized, documented, and validated before packaging to maintain full traceability.Our Process at a GlanceDisassembly & Visual Inspection – Identify cracks, corrosion, and deformationHot Alkaline Cleaning – Dissolves carbon and oil residue48-Hour Acid Descale – Restores internal heat-transfer efficiencyTIG-Weld Reinforcement – Repairs weak or fatigued sectionsPressure Test (125 PSI) – Confirms 100 % coolant/exhaust isolationNeutralization & Oven Cure – Seals surfaces against oxidation