Multiquip 12091 Pump Actuator Rod

The Multiquip 12091 Pump Actuator Rod is a genuine OEM component designed for STH hydrostatic ride-on trowels. As a direct OEM replacement, it meets the same specifications as the original part and installs in place of the worn or damaged rod without modification. This part is sourced directly through Multiquip's authorized parts network, ensuring you receive the correct component for your machine. If your trowel is showing inconsistent blade pitch response or sluggish drive behavior, the pump actuator rod should be among the first components inspected.

Key Features

• Genuine OEM Construction — Manufactured to the same tolerances as the original rod, ensuring correct stroke length and actuation force for the hydraulic pump.
• Direct Drop-In Replacement — Engineered to connect directly to the existing pump linkage on STH hydrostatic ride-on trowels, simplifying the swap during service.
• STH Trowel Compatibility — Confirmed fitment for the STH series hydrostatic ride-on trowel family; always cross-reference your model code before ordering.
• Maintains Hydraulic Response — A correctly functioning actuator rod delivers smooth, consistent pump input, keeping blade pitch and drive control predictable under load.
• Hydraulic System Integrity — Using the correct OEM rod prevents slop or misalignment in the pump linkage that can lead to uneven hydraulic output or accelerated wear on connected components.

The pump actuator rod is a mechanical link in the hydraulic control circuit of a hydrostatic ride-on trowel. It transmits operator input through the control linkage to the hydraulic pump, varying pump displacement to control blade pitch and machine drive. When this rod bends, wears at its connection points, or fails entirely, the trowel may respond erratically to operator commands, lose drive force, or become difficult to control — directly affecting finish quality and operator safety on the slab.

For questions about fitment or to confirm this is the correct part for your STH trowel, contact the DHS Equipment parts team before ordering.

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.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.