
Zh490c 26kw 4-Cylinder Naturally Aspirated Water-Cooled Marine Diesel Engine with Optional Gearbox and Seawater-Freshwater Cooler. The ZH490C four-cylinder naturally aspirated marine diesel engine delivers 26kW at 1500rpm, designed as a reliable power source for small vessels, workboats, and marine auxiliary equipment. Offering multiple power ratings from 26kW at 1500rpm up to 45kW at 3000rpm, this engine adapts to various marine propulsion and onboard power generation requirements with flexible speed matching. Available with optional marine gearboxes, this engine provides direct power transmission to propellers or pumps, simplifying installation and ensuring efficient power transfer for marine propulsion sy. Equipped with an optional seawater-freshwater heat exchanger, the cooling system efficiently manages engine temperature using raw seawater while protecting the freshwater circuit from corrosion and sc. The dependable 24V electric start system ensures quick and reliable ignition in harsh marine environments, reducing downtime and improving the safety and efficiency of your vessel operations. With fuel consumption at <=241g/kW.h and oil use at <=2.6g/kW.h, this economical marine engine lowers operating costs for fishing boats, patrol vessels, and commercial marine applications. Pressure splash lubrication maintains oil pressure at 0.2-0.4MPa at rated speed and >=0.098MPa at idle, protecting critical components in the robust 205kg marine-grade engine block. Direct injection combustion with a 17:1 or 18:1 compression ratio delivers efficient fuel burning, clean exhaust, and low noise, meeting environmental standards for marine waterway operations. Counterclockwise rotation from the flywheel end with a 3# flywheel housing ensures compatibility with standard marine gearboxes, propeller shafts, and auxiliary equipment for flexible marine power con. Backed by a one-year warranty and global spare parts support, the ZH490C is a cost-effective choice for small vessel propulsion, marine pumps, and auxiliary power systems.