This heavy-duty water pump is specifically designed for ISUZU 4HK1 5.2L engines found in NRR, NPR, NPR-HD, and NQR models from 2005-2010. The pump features precision-engineered aluminum construction with a durable cast housing and integrated mounting flange for secure installation. The robust impeller design ensures optimal coolant flow and efficient heat dissipation throughout the engine system. Multiple mounting points and a precision-machined surface provide reliable sealing and proper alignment. This replacement pump includes all necessary mounting positions and maintains the exact specifications of the original equipment to ensure proper fit and function. The carefully balanced assembly helps maintain smooth operation while the corrosion-resistant finish provides long-lasting durability under demanding conditions.