Caterpillar fuel injection pump 463-1678 Caterpillar 320D2 fuel pump Delphi DP310 injection pump 9521A030H CAT engine parts

◆ Product Overview
A high-precision Delphi DP310 series fuel injection pump designed as the direct OEM replacement for the Caterpillar 320D2 excavator. This genuine-quality component corresponds to part numbers 463-1678 and 9521A030H, ensuring accurate fuel metering, optimal combustion, and restoration of factory-rated engine performance and efficiency for demanding earthmoving operations.

◆ OEM Part Numbers
✓ 463-1678 (Caterpillar Number)
✓ 9521A030H (Delphi Number)

◆ Compatible Equipment
✓ Caterpillar 320D2 Excavator

◆ Product Specifications
✓ Condition: 100% New or Premium Remanufactured (As Specified)
✓ Type: Delphi DP310 Series High-Pressure Injection Pump
✓ Application: Excavator Diesel Engine
✓ Calibration: Pre-set to Caterpillar factory specifications for fuel delivery, timing, and pressure.

◆ Key Features
✓ Genuine CAT/Delphi Replacement: Exact interchange for the specified Caterpillar and Delphi part numbers, ensuring perfect compatibility and performance.
✓ Precision Fuel Delivery: Ensures correct injection timing and quantity for maximum engine torque, power, and fuel economy.
✓ Robust Construction: Built to withstand the high pressures, vibrations, and harsh environmental conditions of an excavator.
✓ Performance Restoration: Effectively addresses engine issues such as power loss, excessive smoke, poor throttle response, and hard starting.

◆ Quality Assurance
✓ Comprehensive Bench Testing: Each pump is tested to verify correct flow rates, pressure curves, and governor function.
✓ Leak & Pressure Integrity Tested: All seals and internal components are validated for reliability.
✓ Calibration Certified: Set to meet Caterpillar's stringent standards for performance and emissions.

◆ Installation Applications
✓ Complete replacement of a failed or underperforming injection pump on Caterpillar 320D2 excavators.
✓ Major fuel system overhaul during engine rebuild or scheduled major service.
✓ Correction of diagnostic trouble codes related to fuel pressure and delivery.
✓ Preventive maintenance to ensure long-term reliability and minimize unscheduled downtime.

◆ Service Advantages
✓ Restores Full Engine Performance: Returns the excavator to its rated digging force and productivity.
✓ Protects Your Investment: Proper fuel system function is essential for the longevity of your high-value CAT machine.
✓ Ensures Job Site Uptime: A reliable pump minimizes disruptions and keeps projects on schedule.
✓ OEM-Level Quality: Provides the same performance and durability as the original Caterpillar-supplied part.