Caterpillar high-pressure fuel pump 4768769, designed for C9 engines, plays a key role in fuel pressurization and distribution. It pressurizes low-pressure fuel to 1800-2000bar through precise cooperation of plunger pairs, and delivers it to each cylinder injector according to valve timing via distribution valve. Its pressure control accuracy (error ≤±20bar) directly affects fuel atomization quality and engine power stability, compatible with Caterpillar 336D, 345D excavators and C9 generator sets.
The pump features high-strength cast iron housing and alloy steel plungers, with high-pressure resistance up to 2500bar. Built-in pressure compensation valve automatically adjusts fuel supply pressure to adapt to different working conditions. The drive end adopts roller bearing design with wear rate ≤0.01mm/1000 hours, service life over 15,000 hours under normal conditions, and is equipped with fuel lubrication channel without additional maintenance.
As a professional supplier, Ningbo Qiuning Trading Co., Ltd. provides both original and aftermarket 4768769 high-pressure fuel pumps. Original products strictly follow Caterpillar technical specifications, each undergoing 100-hour high-pressure test (pressure fluctuation ≤15bar), suitable for heavy-duty operations requiring high power output; Aftermarket products pass 500-hour bench tests, with pressure control accuracy reaching over 90% of the original, priced at 60%-70% of the original, meeting regular maintenance and budget-limited scenarios, both with 12-month warranty.
Calibrate the timing phase between pump and engine (error ≤1°) during installation. It is recommended to replace fuel filter every 2000 hours to prevent plunger wear from impurities. We have sufficient inventory, supporting global delivery within 48 hours, and our technical team can provide pressure test standards and installation guidance. Welcome to consult and purchase:
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