Precision-Cast High-Strength Cast Iron Oil Pump with Integrated Pressure Regulation Assembly for Perfect Fitment in CAT 3406 Engines

For 161-4111 4N0733 161-4113 Oil Pump CAT 3406 Excavator engine parts

Specification

Description

This oil pump is designed for CAT 3406 series excavator engines, with OEM part numbers 161-4111, 4N0733, and 161-4113. It is precision-cast from high-strength cast iron with strict machining processes, ensuring a compact structure and perfect fit to the original mounting dimensions. Equipped with an integrated pressure regulation assembly, it delivers consistent oil flow to the engine, maintaining lubrication and cooling for all friction components, and serving as a critical part for reliable engine operation.

Advantage

Perfect Fitment: Matches OEM specifications for CAT 3406 engines, enabling direct installation without modification and reducing maintenance time and costs.
Heavy-Duty Durability: Constructed from wear-resistant cast iron with heat-treated gears and shafts, it withstands continuous high-pressure conditions, outlasting standard aftermarket alternatives.
Consistent Pressure Control: The integrated pressure relief valve automatically adjusts oil pressure according to engine speed, preventing premature wear caused by abnormal oil pressure.
Precision Manufacturing: Strict machining tolerances ensure high-precision mating surfaces, eliminating leakage risks and maintaining efficient oil delivery.

Performance

Efficient Oil Delivery: Provides sufficient oil flow across the full engine speed range, meeting lubrication demands under high-load conditions and effectively reducing friction.
Stable Pressure Output: The pressure regulation system responds quickly to engine load changes, maintaining oil pressure within the OEM-specified safe range with minimal fluctuations.
Wear Resistance: Key moving components are surface-hardened to maintain low wear rates even under high-temperature, high-load conditions, with no performance degradation over extended use.
Proven Reliability: Every unit undergoes strict factory testing for pressure, flow, and leakage, ensuring stable operation in the harsh working environments of excavators and other heavy machinery.

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