Detroit Diesel DD13 Cascadia (2010-14) “A4711405675” EGR Cooler

Precision Remanufacturing for the DD13 PlatformThe A4711405675 EGR Cooler is a professionally remanufactured exhaust gas recirculation unit designed for 2010–2014 Detroit Diesel DD13 engines. Built under Turbo Kings’ precision standards, this EGR cooler restores factory performance, coolant flow efficiency, and thermal stability critical to long-haul applications in the Freightliner Cascadia.Each cooler undergoes a complete teardown and multi-stage cleaning process to eliminate internal restrictions and carbon buildup. The core is submerged in a heated alkaline detergent bath, formulated to break down soot, oil residue, and coolant contamination without compromising brazed joints or metal surfaces. This stage ensures every fin, passage, and channel is fully open for proper thermal transfer.Following the alkaline stage, the cooler enters a 48-hour acid-descaling process, using a balanced citric and phosphoric acid blend. This step removes oxidation, scaling, and mineral deposits that accumulate over time, which are common causes of localized hot spots and flow restriction. After acid treatment, the core is chemically neutralized and oven-cured, leaving behind a clean, corrosion-resistant surface ready for inspection and assembly.Units showing cracks or warping are TIG-weld re-fabricated using high-strength stainless filler, restoring the housing to OEM geometry. All welds are verified through pressure testing and surface inspection. Every finished cooler is pressure-tested to 125 PSI to confirm total separation between coolant and exhaust gas paths — a critical validation step to ensure long-term reliability and emissions compliance.What Makes a Turbo Kings Rebuild DifferentTurbo Kings applies an engineering-based process to each DD13 cooler rebuild, emphasizing precision, traceability, and real-world validation. Our alkaline cleaning system is tuned to reach deep into the fin stack, removing embedded carbon beyond what standard solvent systems achieve. The acid-descaling phase restores full internal efficiency while maintaining weld integrity and alloy protection.After cleaning, units are neutralized, oven-cured, and reinforced at critical stress points through controlled TIG-weld repair. This approach eliminates microfractures and fatigue-prone areas that often lead to failure in lower-grade remanufactures.The result is a cooler that performs with OEM-level consistency and efficiency — built for fleets operating in demanding stop-and-go or continuous-duty environments.Why Fleets and Owner-Operators Trust Turbo KingsTurbo Kings EGR Coolers are engineered for performance longevity and field dependability. Each rebuild undergoes individual validation and serial tracking before leaving our facility.OEM Fitment Guarantee – Direct replacement for Detroit Diesel DD13 (2010–2014)Pressure Tested to 125 PSI – Ensures total coolant/exhaust isolationCorrosion-Free Surface – Post-process neutralization and oven cureTIG-Weld Reinforced – Repairs and strengthens high-stress weld seamsWarranty: 6 Months / Unlimited MileageEvery cooler meets OEM flow and pressure standards before packaging and shipment.Our Process at a GlanceDisassembly & Visual Inspection – Identify cracks, leaks, and deformationHot Alkaline Flush – Removes carbon, oil residue, and sludge48-Hour Acid Descale – Clears oxidation and scale depositsTIG-Weld Repair – Reinforces weak points and restores geometryPressure Test (125 PSI) – Confirms 100% coolant/exhaust isolationNeutralization & Oven Cure – Final corrosion prevention and surface prep