Wacker Neuson 5000073890 Fitting Key

The Wacker Neuson is a genuine OEM Fitting Key designed for the CRT and CT series ride-on and walk-behind concrete power trowels. This small but critical component is sourced directly from Wacker Neuson, ensuring it meets the exact dimensional and material standards required for proper installation and function across the trowel lineup. As a genuine OEM part, the is manufactured to the same specification as the original, giving you confidence that the fit and function will be correct the first time. Fitment covers an extensive range of CRT ride-on trowels — including the CRT36-24A, CRT36-25, CRT36-26A, CRT48-31V, CRT48-33K, CRT48-34V, CRT48-35L, CRT48-35V, CRT48-37V, CRT48-57K, and CRTv36-26A series — as well as CT walk-behind trowels in 30-inch, 36-inch, and 48-inch configurations across the CT30, CT36, and CT48 model families.

Key Features

• Genuine OEM Dimensional Accuracy — Manufactured to Wacker Neuson's original specification, ensuring the key seats correctly in the keyway without slop or binding that could compromise the rotating assembly.
• Drop-In Replacement — Matches the original profile exactly, dropping into the existing keyway slot without modification to surrounding components.
• Broad Trowel Family Coverage — A single part number covers CRT ride-on trowels (36-inch and 48-inch), CT walk-behind trowels (30-inch, 36-inch, and 48-inch), and multiple engine and drive configurations within those families.
• Torque Transfer Integrity — A correctly fitted key maintains solid torque transfer between the shaft and the driven component; a worn or missing key allows relative rotation that accelerates wear and damages mating surfaces.
• Corrosion-Resistant Construction — Built to withstand the wet, slurry-heavy environment of concrete finishing work where moisture and alkaline contact are routine.

A fitting key is a small, precisely machined component that sits in a keyway — a slot cut into both a shaft and its mating hub or collar — to lock the two together rotationally. On a concrete trowel, this connection is essential for transmitting drive force from the gearbox or motor shaft to the rotating pan or pitch-change assembly; without it, power cannot be reliably transferred and the driven component will slip or spin freely. When a fitting key shears, deforms, or works loose, the result is lost drive, accelerated wear in the keyway itself, and potential damage to more expensive surrounding components — making prompt replacement with the correct OEM part the most cost-effective course of action.

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.