The Multiquip 771433-01 Key 7X7X18 is a genuine OEM component designed for ST4, ST6, ST41230, ST41460, ST61230, and ST61460 submersible pump models. As a direct OEM replacement, this key is manufactured to the exact dimensions required to maintain proper shaft-to-impeller alignment and torque transfer in Multiquip submersible pump applications. Sourced directly through the Multiquip parts program, 771433-01 ensures you are installing the correct part the first time.
Key Features
- Exact OEM Dimensions — Manufactured to the precise 7x7x18 mm profile, ensuring correct seating in the keyway without shimming or modification.
- Direct Shaft Fit — Drops into the shaft keyway on compatible Multiquip submersible pumps, restoring the drive connection between the motor shaft and impeller.
- Broad Submersible Pump Coverage — Confirmed fitment for ST4, ST6, ST41230, ST41460, ST61230, and ST61460 Multiquip submersible pump models.
- Torque Transfer Integrity — A correctly sized key locks the impeller to the shaft so the pump delivers full flow and pressure — a worn or missing key causes impeller slip and immediate loss of pumping performance.
- Genuine OEM Sourcing — Supplied as an authorized Multiquip OEM part, so material grade and dimensional tolerances match the original production specification.
A drive key is a small but critical component that locks a rotating part — in this case the impeller — to the motor shaft by fitting into matching keyways cut into both components. When the key is in place, torque from the motor shaft is transferred directly to the impeller, driving water flow. If the key shears, deforms, or goes missing, the shaft spins freely inside the impeller hub and the pump loses the ability to move water, even though the motor continues to run. Replacing a worn or damaged key with the correct 7x7x18 mm OEM part restores full mechanical engagement and protects both the shaft and the impeller hub from further wear.
Need help confirming this is the right part for your machine? Contact DHS Equipment and our team will verify fitment against your model and serial number before you order.
Part Details
| Part Number | 771433-01 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Key 7X7X18 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Submersible Pumps | ST6 |
| Submersible Pumps | ST4 |
| Submersible Pumps | ST41230/ST41460 |
| Submersible Pumps | ST61230/ST61460 |
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.
