Multiquip 43057 Tandem Pump 28CC EP Control

The Multiquip 43057 Tandem Pump 28CC EP Control is a genuine OEM hydraulic pump assembly designed for the STXDF series super-sized hydrostatic ride-on power trowels. As a direct OEM replacement, this part meets the original engineering specifications set by Multiquip, ensuring correct hydraulic output and system pressure for the STXDF dual-fuel platform. Sourced directly through authorized channels, part number 43057 is the correct service replacement for operators maintaining or rebuilding the hydraulic drive system on their STXDF trowel.

Key Features

• Genuine OEM Hydraulic Specification — Built to the original pump displacement and electrohydraulic proportional (EP) control calibration required by the STXDF hydraulic system, not a generic substitute.
• Tandem Configuration — Dual-pump tandem design delivers independent hydraulic circuits in a single assembly, matching the original mounting footprint and port arrangement for a direct swap.
• STXDF Series Compatibility — Confirmed fitment for Whiteman STXDF super-sized hydrostatic ride-on trowels with dual-fuel capability.
• EP Control Precision — Electrohydraulic proportional control maintains smooth, responsive blade pitch and drive adjustment — a worn or leaking pump causes erratic trowel blade response and loss of machine control.
• Hydraulic System Integrity — A failed tandem pump can result in complete loss of drive or blade function; using the correct OEM 43057 assembly restores full hydraulic circuit operation to both systems simultaneously.

The tandem pump on the STXDF ride-on trowel serves as the heart of the machine's hydraulic system, supplying pressurized fluid to two independent circuits — typically one for blade pitch control and one for ground drive — from a single shaft-driven assembly. The electrohydraulic proportional (EP) control allows the operator to modulate output smoothly and precisely, which is critical for achieving a consistent finish on large concrete slabs. When this pump wears, develops internal bypass, or fails outright, the trowel loses the ability to accurately control blade angle or forward motion, making replacement with the correct OEM unit essential for safe and effective operation.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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