Dongfeng KC Radiator Assembly 3405080-K26B0 in stocked

Engineered for maximum thermal performance, this power steering cooler features a multi-core aluminum finned design that significantly enhances heat transfer efficiency. The cooler’s core consists of 12-15 parallel aluminum tubes (depending on configuration) surrounded by dense, corrugated aluminum fins—creating a large heat dissipation area (up to 0.8 m²) that effectively reduces power steering fluid temperature. Rigorous testing shows it can lower fluid temperature by 25-35°C under heavy-load conditions (e.g., uphill driving, frequent steering adjustments in construction sites), maintaining fluid viscosity within the optimal range (30-40 cSt at 40°C). This prevents fluid degradation (oxidation, viscosity loss) and protects critical steering components (pump, rack, hoses) from overheating-related wear, extending the power steering system’s service life by 30%+ compared to systems without proper cooling

The 3405080-K26B0 cooler is constructed entirely from high-grade 3003 aluminum alloy, selected for its excellent thermal conductivity, mechanical strength, and corrosion resistance. The aluminum core and fins undergo a multi-step surface treatment process—including degreasing, etching, and chromate conversion coating—followed by a clear powder coat finish, which forms a protective barrier against road salts, moisture, and industrial contaminants. This coating prevents aluminum oxidation (white rust) even in harsh environments (e.g., coastal areas, winter road conditions). The cooler’s end tanks, also made of aluminum, are welded to the core using a high-temperature brazing process, ensuring leak-proof joints that can withstand operating pressures up to 1.2 MPa (174 psi)—well above the typical working pressure of Dongfeng KC’s power steering system (0.6-0.8 MPa)

To ensure reliable operation under varying conditions, the cooler integrates two key safety features: a built-in pressure relief valve and a burst-resistant core structure. The pressure relief valve, set to activate at 1.5 MPa, prevents excessive pressure buildup in the power steering system caused by fluid expansion or blockages (e.g., clogged hoses), protecting the cooler and steering components from damage. The core’s aluminum tubes are designed with a thickened wall (0.8-1.0 mm) and reinforced fin-to-tube connections, enabling the cooler to withstand mechanical vibrations (common in heavy-duty truck operation) and minor impacts without tube deformation or fin detachment. Additionally, the cooler’s flow path is optimized to minimize pressure drop (≤0.1 MPa at maximum flow rate), ensuring consistent fluid circulation and preventing steering lag—critical for maintaining precise handling of Dongfeng KC trucks, especially when carrying heavy loads

Designed for user convenience, the 3405080-K26B0 cooler supports straightforward installation that aligns with Dongfeng KC’s original mounting layout. It comes with pre-drilled mounting brackets and compatible hardware (bolts, washers) that match the truck’s existing engine bay mounting points, allowing mechanics to complete installation in 30-45 minutes using standard tools. The cooler’s inlet and outlet ports are equipped with quick-connect fittings (compatible with Dongfeng’s original hoses) or threaded connections with O-ring seals, ensuring secure, leak-proof attachment without the need for additional sealants. For maintenance, the cooler’s smooth aluminum fins and exterior surfaces are easy to clean—occasional rinsing with water (to remove dust, bugs, or road debris) is sufficient to maintain heat dissipation efficiency, as the powder coat finish prevents dirt buildup. Unlike liquid-cooled coolers, it requires no additional fluids or filters, reducing long-term maintenance costs and ensuring hassle-free operation throughout its service life (typically 100,000+ kilometers under normal use)