The Multiquip 1803521221 Liner Ring is a genuine OEM component designed for the QP205SH centrifugal pump. Sourced directly from Multiquip, this part meets the original engineering specifications for your equipment, ensuring a proper fit within the pump housing. If you are servicing a QP205SH, verifying you have the correct liner ring — part number 1803521221 — is the critical first step to restoring full pump performance.
Key Features
- Genuine OEM Material Grade — Manufactured to the original wear-resistance specifications required for continuous contact between the impeller and pump casing, maintaining tight running clearances over time.
- Direct Housing Fit — Engineered to seat precisely within the QP205SH pump casing without modification, restoring the original clearance geometry between the impeller and volute.
- Confirmed QP205SH Fitment — Verified compatibility with the Multiquip QP205SH centrifugal pump series.
- Pump Efficiency Restored — A correctly fitted liner ring maintains the close clearance needed to maximize discharge pressure and flow rate; a worn ring causes recirculation losses and significant output drop.
- Genuine OEM Assurance — Carries Multiquip's OEM part status, so you know the geometry, material, and finish match what left the factory — critical for a wear component that directly affects pump output.
The liner ring sits between the rotating impeller and the pump casing, forming a close-tolerance seal that forces fluid toward the discharge outlet rather than allowing it to recirculate back to the suction side. This clearance is what gives a centrifugal pump its pressure and flow efficiency. As the liner ring wears, that clearance grows, causing the pump to work harder while delivering less water — leading to reduced output, increased fuel consumption, and eventual inability to prime. Replacing the liner ring with a correct OEM part like the Multiquip 1803521221 restores the original hydraulic efficiency and extends the working life of the impeller and casing.
For fitment questions or to confirm this part is right for your machine, contact the DHS Equipment parts team for support.
Part Details
| Part Number | 1803521221 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Liner Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Centrifugal Pumps | QP205SH |
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.
