Cummins ISX 15 (2011-16) “4352360NX” EGR Cooler

Precision Remanufacturing for the ISX15 Heavy-Duty PlatformThe Cummins 4352360NX EGR Cooler is fully remanufactured by Turbo Kings to OEM-grade standards, restoring optimal exhaust-gas cooling performance and reliability for 2011–2016 ISX15 engines. Designed to handle the extreme exhaust temperatures and duty cycles of the DEF/DPF-equipped ISX platform, this cooler is rebuilt using controlled, repeatable processes that eliminate internal restriction, cracking, and thermal imbalance.Every core begins with complete disassembly and inspection, allowing access to the coolant passages, exhaust gas channels, and fin stack assemblies. Components undergo a heated alkaline detergent cleaning, which dissolves soot, carbon, and oil residues accumulated from extended EGR operation. This cleaning stage ensures clear flow paths without compromising brazed joints or stainless surfaces.After the detergent stage, the core is immersed in a 48-hour mild acid bath made with a balanced citric- and phosphoric-acid blend. This step gently removes oxidation, scale, and coolant mineral buildup that can obstruct heat transfer or cause localized overheating. Once descaled, all components are chemically neutralized to prevent flash corrosion, then air-purged and dried in a temperature-controlled oven.Units showing cracks, porosity, or fatigue undergo precision TIG-weld re-fabrication using stainless filler matched to Cummins OEM material. Alignment jigs are used to maintain factory geometry and ensure a precise fit. After structural repairs, every EGR cooler is pressure-tested to 125 PSI, submerged in water to verify 100 % coolant-to-exhaust isolation before final assembly and inspection.What Makes a Turbo Kings Rebuild DifferentTurbo Kings rebuilds each ISX cooler with a focus on depth, precision, and consistency. Our alkaline detergent systemremoves oil and soot far beyond the reach of conventional solvent rinses, restoring internal flow and thermal efficiency.The 48-hour acid descaling phase is tightly controlled to protect weld integrity while clearing internal scale and corrosion. Post-treatment, each unit is neutralized and oven-cured to achieve a dry, corrosion-resistant finish.The TIG-weld reconditioning process is performed under controlled temperatures to eliminate stress cracks and reinforce weak sections exposed to continuous high-load conditions. Before packaging, every cooler is inspected for surface flatness, flange alignment, and port precision—ensuring OEM-level fit and durability.This attention to detail delivers long-term stability for fleets operating under severe-duty or stop-and-go cycles where EGR system efficiency is critical.Why Fleets and Owner-Operators Trust Turbo KingsTurbo Kings EGR Coolers are engineered for uptime, reliability, and repeatable performance. Every unit is validated, serialized, and backed by proven results in real-world heavy-duty operation.OEM Fitment Guarantee – Direct replacement for 2011–2016 Cummins ISX15 enginesPressure Tested to 125 PSI – Leak-free verification of coolant/exhaust separationCorrosion-Free Finish – Neutralized and oven-cured post-acid processTIG-Weld Reinforced – Repairs structural fatigue for long-term enduranceWarranty: 6 Months / Unlimited MileageEach cooler meets Turbo Kings’ internal quality thresholds before leaving our facility.Our Process at a GlanceDisassembly & Inspection – Identify cracks, distortion, and internal restrictionHot Alkaline Flush – Dissolves carbon, oil, and debris48-Hour Acid Descale – Removes oxidation and scale buildupTIG-Weld Repair – Rebuilds weakened or fatigued jointsPressure Test (125 PSI) – Submerged validation for cross-leaksNeutralization & Oven Drying – Final corrosion protection and prep