904-862 Vacuum Pump with Pulley for Isuzu NPR Fleet Supply
904-862 Vacuum Pump with Pulley — replacement for Isuzu NPR and NPR-HD (1995–2020) across diesel, gas, CNG, and bi-fuel configurations. Precision-cast aluminum housing with hardened steel vanes and FKM seals rated to 150°C supports extended service intervals under continuous urban and construction loads. Monitor vacuum drop and brake assist fade as early wear indicators before scheduling replacement Evaluate hoses and check valves alongside pump service to prevent repeat failures within the same maintenance cycle Fleet stocking supported with replacement interval guidance provided per model year and engine variant.