This heavy-duty steel rear hub bearing nut set is designed specifically for ISUZU NPR, NPR-HD, NQR, and NRR truck models with 4HE1 4.8L and 4HK1 5.2L engines from 1998-2025. Each nut is manufactured to precise OEM specifications, ensuring perfect fitment and reliable performance. These precision-engineered components are essential for maintaining proper wheel hub alignment and smooth operation of your vehicle's rear axle assembly. The industrial-grade steel construction provides exceptional durability and load-bearing capacity. Installation is straightforward , making it an ideal replacement part for professional mechanics and fleet maintenance operations.