Vacuum Pump with Pulley & Brake Assist Vacuum Pump FIT 1995-2020 Isuzu NPR NPR-HD GAS V8 5.7L 6.0L - Replacement for 8972410351 904-862 97241035 - L96 LQ4 L31 LY6 L05 Engine (1-Pack)

Vehicle & Engine Compatibility Matrix: 1995-2020 FIT Isuzu NPR / NPR-HD (GAS V8 Engines Only) Engine Codes: 5.7L (L05, L31), 6.0L (LQ4, LY6, L96) Replacement Part Numbers: 8972410351, 904-862, 97241035 Technical Specifications: - Component: Vacuum Pump with Integrated Pulley - Material: High-Strength Thermal Alloy - Configuration: Direct Bolt-on / Belt Driven - Application: Brake Assist & Accessory Vacuum Control Operational Characteristics: This Brake Assist Vacuum Pump addresses vacuum loss and internal seal degradation in high-mileage fleet trucks. The assembly is tested for salt spray endurance and thermal stability to maintain its intended pressure geometry. Restores factory-standard vacuum levels for consistent accessory operation and engine management. Installation & Maintenance: Direct mechanical integration with existing factory hardware. [Caution]: Ensure correct belt routing according to the Isuzu V8 engine diagram. Periodic inspection of vacuum hoses is recommended to ensure sustained system integrity. Avoid using aggressive chemical solvents on the pulley surface during seating.

• FIT Isuzu NPR 1995-2020, FIT Isuzu NPR-HD 1995-2020. Specifically engineered for GAS V8 engines including 5.7L (L05, L31) and 6.0L (LQ4, LY6, L96) configurations. Please verify your vehicle’s fuel type is GASOLINE before purchase. Cross-reference OE numbers 8972410351 and 904-862 to ensure a precise mechanical alignment.
• Constructed with a high-temperature resistant alloy housing and precision-sealed internal chambers. This Vacuum Pump with Pulley is tested for environmental exposure and mechanical endurance in commercial fleet environments. The heavy-duty assembly maintains structural integrity across extended duty cycles without the use of sensitive coating agents.
• Designed to address insufficient vacuum pressure and restore factory-spec brake assist characteristics. This unit facilitates the proper redistribution of atmospheric pressure required for engine accessory functions. The internal diaphragm and valving are precision-matched to maintain the intended mechanical vacuum geometry for Isuzu V8 platforms.
• Featuring a pre-installed pulley for a direct-fit integration with the engine’s serpentine belt system. This Brake Assist Vacuum Pump replaces brittle or leaking factory units, restoring the necessary torque-to-vacuum ratio. The physical alignment of the pulley is precision-calibrated to maintain consistent belt tensioning and rotational balance.
• Bolt-on restoration utilizing existing factory mounting locations for commercial truck applications. [Technical Notice]: Verify engine code (e.g., L96, LQ4) on the vehicle emission label prior to installation. Does not require specialized calibration tools. To maintain performance, ensure the vacuum lines are cleared of organic debris during assembly.