Product Introduction: SFENG-805 Radiator for Kubota RX303
The SFENG-805 radiator is a precision-engineered heat exchange component specially designed for the Kubota RX303 mini excavator, with OEM reference number RC411-4230-1. Manufactured by Shuangfeng, this radiator delivers reliable cooling performance tailored to the compact construction machinery’s rigorous working demands, solving overheating risks during long-hour excavation, loading and site operation. Its precise dimensional configuration includes a 367×53 header and a 375×351×36 core, matching the original equipment mounting structure perfectly without any modification during installation.
This radiator adopts standardized pipe and port sizes marked on the drawing: a main inlet/outlet diameter of Φ28, plus auxiliary Φ8 ports, which fully align with the Kubota RX303’s original pipeline layout to avoid leakage, pressure loss or fluid circulation blockage. We adopt aluminum alloy raw materials that exceed common industrial standards, with thickened core tubes and sturdy fins that greatly boost structural rigidity. Unlike low-cost alternatives that use thin raw materials to cut costs, our product features outstanding vibration resistance, critical for mini excavators working on uneven, bumpy construction sites. Continuous bumping and engine vibration will not cause fin deformation, crack or coolant leakage, greatly extending the service life of the whole cooling system.
Corrosion resistance is another core strength of the SFENG-805 model. The complete set of water chamber, tubes and fins receives full anti-rust oxidation treatment, making it suitable for diverse harsh environments such as muddy construction yards, dusty mines and coastal projects with salt mist. Even under long-term exposure to moisture, mud and corrosive dust, the radiator maintains stable heat dissipation efficiency and avoids premature rust-through failure, helping machine owners slash maintenance and replacement expenses over time.
Every SFENG-805 radiator goes through multi-round strict quality inspections before delivery, including air tightness pressure testing, heat dissipation efficiency testing and full dimension calibration. Supported by our abundant mold resources and advanced automated production equipment, we guarantee consistent dimensional accuracy for every batch. Our team of experienced skilled workers carries out precision full welding for all joints, eliminating hidden risks of water leakage that often trouble generic aftermarket radiators.
Shuangfeng supports flexible customization based on customer requirements for this Kubota RX303 radiator. We can adjust fin density, core thickness and surface anti-corrosion treatment to fit extra-severe working conditions. With stable supply capacity and factory-direct pricing, the SFENG-805 radiator has become a trusted aftermarket replacement choice for global machinery dealers, repair shops and equipment rental companies. We welcome clients to place bulk orders and arrange factory visits to witness our full production and quality control workflow.
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