The Multiquip 0521070740 Key is a genuine OEM replacement built for MQ series trash pumps. Sourced directly from Multiquip, this part is manufactured to the same specification as the original, ensuring a correct, secure fit every time. If your pump is showing signs of shaft slippage, power loss, or drive failure, replacing a worn or damaged key is often the first step in restoring full operation. Keep a spare on hand — it is a small part with a big impact on machine performance.
Key Features
- Genuine OEM Construction — Manufactured to exact Multiquip tolerances, ensuring the key seats fully in the keyway without play or slop that could lead to shaft damage.
- Direct Replacement for MQ Trash Pumps — Part number this part installs directly into MQ series trash pump assemblies with no modification to the shaft or hub required.
- Confirmed Fitment — Designed for MQ series trash pumps; verify your model against part number 0521070740 before ordering.
- Protects Shaft and Impeller Integrity — A correctly fitted key locks the impeller or drive component to the shaft, preventing rotational slippage that can score keyways and cause costly secondary damage.
- Critical Safety Function — A failed or missing key can cause sudden loss of pump drive, resulting in unexpected machine stoppage during fluid transfer operations.
A key is a small, precision-machined component that sits in a slot — called a keyway — machined into both a shaft and a mating hub, such as an impeller or pulley. Its job is to lock the two components together rotationally so that torque from the engine is transferred cleanly to the pump impeller. When a key shears, wears, or goes missing, the shaft spins freely inside the hub and the pump loses all drive, even though the engine continues to run. Replacing the key promptly prevents the keyway itself from being wallowed out, which would require a far more expensive shaft or impeller replacement.
Part Details
| Part Number | 0521070740 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Key |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Trash Pumps | MQ41TDH |
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.
