Original Cummins engine spare parts water pump C5520883

Built to deliver reliable heat dissipation for high-power Cummins engines, this water pump features a precision-engineered centrifugal impeller with 6 curved blades—optimized via computational fluid dynamics (CFD) to maximize coolant flow. It achieves a rated flow rate of 85 L/min at 1500rpm, 20% higher than aftermarket pumps, ensuring uniform coolant distribution across the engine’s cylinder head and block. The pump maintains a stable pressure of 0.15-0.25MPa, preventing cavitation and ensuring efficient heat transfer even under extreme loads (e.g., climbing slopes with full cargo). By keeping the engine temperature within the optimal 82-90℃ range, it reduces thermal wear on piston rings and cylinder liners by 30%, while improving fuel efficiency by 2-3% compared to inefficient pumps that cause overheating or undercooling

Crafted for the rigorous operating conditions of heavy-duty engines, the C5520883 water pump uses high-grade materials for exceptional durability. The impeller is made of nodular cast iron (GG40) with a corrosion-resistant ceramic coating, resisting erosion from coolant impurities and extending service life by 50% compared to aluminum impellers. The pump housing is die-cast from ADC12 aluminum alloy with a powder-coated finish, providing both lightweight strength and rust resistance. The shaft is made of 42CrMo alloy steel, heat-treated to HRC55-60 for wear resistance, and supported by double-row deep-groove ball bearings (SKF brand) that handle radial and axial loads without failure. These premium components enable the pump to withstand 250,000km of service without maintenance, matching the engine’s overhaul cycle

To address the common issue of coolant leakage in water pumps, C5520883 integrates a dual-seal system that ensures zero leakage. The primary seal is a mechanical face seal with silicon carbide stationary and carbon rotating rings—providing a tight, wear-resistant barrier that handles high temperatures (up to 120℃) and pressure fluctuations. The secondary seal is an EPDM rubber O-ring with a stainless steel spring, acting as a backup to prevent coolant seepage if the primary seal wears. The seal assembly is pre-lubricated at the factory, eliminating dry friction during initial startup. Additionally, the pump’s mounting flange features a precision-machined surface (flatness ≤0.05mm) that mates perfectly with the engine block, further enhancing the leak-proof performance—coolant loss is limited to ≤0.1L per 10,000km, far below industry standards

As a genuine Cummins component, the water pump offers hassle-free installation and guaranteed quality. It comes fully assembled with all necessary hardware—mounting bolts, gaskets, and pulley—eliminating the need for separate parts sourcing. The pulley is pre-aligned with the pump shaft, ensuring proper belt tension and avoiding premature belt wear. Installation requires only standard tools, and a qualified technician can complete replacement in 2 hours—40% faster than aftermarket pumps that require modification. Each unit undergoes 100% factory testing, including flow rate measurement, pressure testing, and leak detection, and carries a unique serial number for traceability. Backed by a 2-year/200,000km Cummins official warranty, it minimizes the risk of premature failure and reduces long-term maintenance costs for fleet operators, ensuring maximum vehicle uptime