Multiquip 21301 Rod Pump Actuator M25

The Multiquip 21301 Rod Pump Actuator M25 is a genuine OEM replacement component designed for Whiteman hydrostatic ride-on power trowels, including the HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTXD6i, HTXG6DF, STX55J6, STX55Y6, and STXD6i. As a direct OEM part, the 21301 is manufactured to the same specification as the original, ensuring proper fitment and function within the hydraulic control system. If you are servicing a Whiteman HTX or STX series ride-on trowel, this is the correct actuator rod for your machine. DHS Equipment stocks this part direct from Multiquip, so you can order with confidence.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original specification for the M25 pump actuator system, ensuring the rod meets the dimensional and material tolerances required for proper hydraulic response.
• Direct Drop-In Replacement — Engineered to install in place of the original rod without modification, connecting directly to the pump actuator linkage on HTX and STX series trowels.
• Broad HTX and STX Series Fitment — Confirmed compatible with HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTXD6i, HTXG6DF, STX55J6, STX55Y6, and STXD6i Whiteman ride-on power trowels.
• Consistent Blade Pitch Control — A correctly functioning actuator rod maintains precise hydraulic input to the pump, allowing the operator to reliably adjust blade pitch and drive response during finishing operations.
• Verified Multiquip Part Number — Sold under the exact Multiquip part number 21301, eliminating guesswork when cross-referencing your machine's parts manual.

The pump actuator rod is a critical link in the hydraulic control circuit of a hydrostatic ride-on trowel. It transfers mechanical input from the operator controls to the hydraulic pump, which in turn regulates blade pitch and machine movement. When this rod is worn, bent, or damaged, the trowel may respond sluggishly, lose consistent blade angle control, or behave unpredictably — directly affecting the quality of the finished concrete surface. Replacing a worn actuator rod promptly restores precise, responsive control to the machine.

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.