Shiyan Mingqi Industry and Trade Co., Ltd
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Guangxi Cummins LiuGong QSL9.3 Engine SP230421 Coolant Pump for Excavators – Part No. 5621945/3966841
Guangxi Cummins LiuGong QSL9.3 engine coolant pump — a high-performance, OEM-grade replacement component specifically engineered for heavy-duty excavators equipped with the Cummins QSL9.3 diesel powertrain. This robust and precision-engineered coolant pump, identified by part number SP230421, ensures optimal thermal management, consistent coolant circulation, and extended engine life under demanding operating conditions. It is fully compatible with both Guangxi Cummins and LiuGong-branded machinery and meets strict original equipment specifications for flow rate, pressure tolerance, sealing integrity, and rotational durability. The pump is cross-referenced with two widely recognized service part numbers — 5621945 and 3966841 — facilitating seamless inventory integration and simplified procurement across global service networks. Designed with corrosion-resistant cast iron housing, premium-grade ceramic-mechanical seals, and hardened steel impeller shafts, it delivers exceptional reliabi












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