Construction machinery For 326-4635 3264635 Pump Head CAT 320D 323D Excavator Engine Parts

Construction machinery For 326-4635 3264635 Pump Head CAT 320D 323D Excavator Engine Parts

Specification

Description

Advantage

Perfect Fit: Manufactured strictly per original dimensional standards for direct plug-and-play installation without extra machining;
Fully Pre-assembled Unit: Plungers, springs, solenoid valve and seals are all pre-installed to cut maintenance time significantly;
Heavy-duty Cast Housing: Wear and corrosion resistant, withstand long-term high-pressure fuel impact under dusty, extreme temperature construction site conditions;
Standard Sealed Oil Circuits: Original-grade port and sealing structure to eliminate oil leakage and pressure loss issues;
Wide Compatibility: Fits two mainstream excavator models 320D and 323D, reducing spare parts inventory pressure;
Rigorous Factory Inspection: Every pump head undergoes bench testing on pressure, flow and electronic control performance for ultra-low defect rate.

Performance

Stable High-pressure Fuel Supply: Micron-level precision machining on plunger matching clearance delivers consistent injection pressure, ensuring steady engine power without speed drop or weak output;
Sensitive Electronic Control: Matched solenoid valve realizes accurate signal transmission and precise injection timing control for superior fuel atomization and lower fuel consumption;
Long Service Life: Combination of high-hardness plungers and heavy-duty springs minimizes abrasion during reciprocating motion, with service life comparable to original standard parts;
Excellent Pressure Stabilization: Minimal oil pressure drop under fluctuating load, maintaining continuous stable fuel supply during climbing and heavy-load operations;
Reliable Cold Start Performance: Optimized sealing structure adapts to low-temperature environments, achieving smooth cold startup and reducing white smoke and hard-start failures;
Improved Impurity Resistance: Polished internal oil passages prevent diesel residue buildup, lowering risks of pump sticking and injector blockage.

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