Multiquip 90745ZE1600 Key 4.78 X4.78X38

The Multiquip 90745ZE1600 Key 4.78 X4.78X38 is a genuine OEM component designed for a wide range of Multiquip and Multiquip portfolio equipment, including plate compactors, walk-behind trowels, concrete mixers, masonry saws, concrete saws, diaphragm pumps, and concrete vibrators. This small but critical drive key is sourced directly from Multiquip, ensuring it meets the exact dimensional and material specifications required for proper shaft-to-hub engagement across compatible models. Confirmed fitment includes MVC-70H, MVC82VHW, MVC88VTHW, JH55C, MC-42S, CMS-44S, FCG1-6HA, MP1455H, and many additional models across the Multiquip lineup. When replacing part 90745ZE1600, always cross-reference your equipment's model code to confirm compatibility before installation.

Key Features

• Genuine OEM Dimensional Accuracy — Machined to the exact 4.78 x 4.78 x 38 mm specification for correct keyway seating without shimming or filing.
• Direct Shaft-to-Hub Engagement — Drops into the keyway slot on compatible shafts across multiple equipment families, restoring positive torque transfer immediately upon installation.
• Broad Multiquip Fleet Coverage — A single part number spans plate compactors (MVC series), walk-behind trowels (JH55C, C-4, CA series), concrete mixers (MC, CMS, WC, EC series), masonry and concrete saws (MP, MS, FCG series), and diaphragm pumps (MQD, SDP series).
• Torque Transmission Integrity — A correctly installed drive key prevents shaft slippage under load, keeping blades, drums, and impellers turning at full rated output.
• Critical Drivetrain Safety — A worn or missing key allows component slippage that can cause sudden loss of drive on saws, trowels, and pump impellers — replacing it promptly is essential to safe operation.

A drive key is a small rectangular piece of hardened metal that sits in a machined slot — called a keyway — cut into both a rotating shaft and the hub of the component mounted to it, such as a blade, drum, sprocket, or impeller. Its job is to lock those two parts together rotationally so that torque from the engine is transferred cleanly without slippage. When a key shears, deforms, or works loose, the mounted component can spin independently of the shaft, causing loss of drive, vibration, accelerated wear on the keyway itself, and potential operator hazard depending on the application. Replacing a damaged key promptly with the correct OEM part restores full drivetrain integrity and prevents secondary damage to the shaft or hub.

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.