Genuine Nanyue Fuel Injection Pump B4A71D-Z (D7002-1111100A-493) for Yuchai YC4D80-T20 YC4108

Genuine Hengyang Nanyue Fuel Injection Pump, model B4A71D-Z. This 4P110 series mechanical pump is a critical assembly, specifically carrying the part number D7002-1111100A-493. It is engineered as original equipment for Yuchai Diesel Engines, including the widely used YC4D80-T20 and YC4108 pump series. As an authentic Nanyue product, it guarantees the rugged construction and precise fuel metering required for agricultural machinery, generators, and construction equipment.

The B4A71D-Z serves as the primary component for fuel pressurization and distribution within the engine. It is designed to deliver diesel at exact intervals, ensuring optimal combustion efficiency and engine longevity. Because this B4A71D-Z pump is manufactured to Yuchai’s stringent technical specifications, it maintains the specific torque characteristics and power output required for Tier 2 (T20) emission-standard engines. Its mechanical governor and high-pressure plungers are built to withstand varying fuel qualities and harsh operating environments.

Replacing a failing or low-pressure pump with this genuine B4A71D-Z unit is essential for resolving issues such as engine hunting, power loss under load, or excessive exhaust smoke. Using an original Nanyue assembly instead of generic alternatives ensures a direct-fit installation and prevents potential damage to the engine’s timing gear system. This pump comes factory-calibrated and sealed, ready to restore the dependable performance of your Yuchai-powered equipment.

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Contact:
Alex
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Email: alex@grockdiesel.com / xiaoliang8687@gmail.com