The Multiquip 0191190544 is a genuine OEM Impeller Bolt 5/16-24 UNF x 25 designed for QP2TZ, QP2TB, and QP2TH series pumps. As an authorized Multiquip OEM part, the 0191190544 delivers the exact thread specification and dimensional tolerances required to properly secure the impeller within the pump housing. This bolt is a direct-fit replacement verified for compatibility across QP2TZ, QP2TB, and QP2TH models, ensuring a correct installation without guesswork.
Key Features
- Correct Thread Specification: — Manufactured to the precise 5/16-24 UNF thread standard and 25mm length required by the pump impeller mounting location — no thread chasing or sizing adjustments needed.
- Genuine OEM Construction: — Sourced directly from Multiquip, this bolt meets the original material grade and torque specification used in production, ensuring the impeller is held securely under full pump load.
- Confirmed Multi-Model Fitment: — Verified for use on QP2TZ trash pumps, QP2TB centrifugal pumps, and QP2TH trash pumps, covering multiple pumps within the QP2 platform.
- Critical Retention Component: — A correctly torqued impeller bolt maintains proper impeller engagement with the pump shaft, sustaining full flow rate and discharge pressure; a loose or worn bolt allows impeller slippage and rapid performance loss.
- Wet-End Integrity: — Securing the impeller with the correct fastener prevents cavitation-inducing misalignment and protects surrounding wet-end components from accelerated wear.
The impeller bolt is the primary fastener that locks the impeller onto the pump shaft, transferring rotational energy from the engine into fluid movement. When this bolt is properly torqued, the impeller spins true and maintains consistent pumping output; if it loosens or fails, the impeller can shift on the shaft, causing vibration, loss of prime, reduced flow, and damage to the mechanical seal and volute. Replacing this fastener with the correct OEM specification bolt — part 0191190544 — is essential to restoring full pump performance and protecting the surrounding wet-end assembly.
For questions about fitment or to confirm this part is correct for your specific unit, contact the DHS Equipment team before ordering.
Part Details
| Part Number | 0191190544 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Impeller Bolt 5/16-24 UNF x 25 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Trash Pumps | QP2TZ |
| Trash Pumps | QP2TB |
| Trash Pumps | QP2TH |
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.
