The Multiquip 336019090 Plunger Bearing is a genuine OEM component designed for MQD2HA and MQD3HA diaphragm pumps. Sourced directly from Multiquip, this bearing is manufactured to the exact tolerances required for smooth, consistent plunger travel within the pump mechanism. Verified fitment makes it a direct replacement for MQD2HA and MQD3HA units, ensuring correct installation without guesswork. DHS Equipment supplies this part as an authorized Multiquip OEM replacement to keep your pump running at full capacity.
Key Features
- OEM-Grade Precision Tolerancing — Manufactured to Multiquip's exact dimensional specifications, ensuring the plunger moves through its stroke with consistent bearing contact and minimal friction.
- Direct Plunger Housing Fit — Engineered to seat correctly within the MQD2HA and MQD3HA pump housings, allowing straightforward installation without reworking or shimming.
- Confirmed Fitment for MQD2HA and MQD3HA — Verified OEM compatibility across both Multiquip diaphragm pump models, eliminating part substitution risk during servicing.
- Sustained Pump Stroke Integrity — A worn or failed plunger bearing causes lateral play in the plunger, leading to accelerated seal wear and inconsistent fluid output. Replacing it restores full stroke control and flow consistency.
- Genuine OEM Part — Supplied as a genuine Multiquip component, meaning the materials and geometry match the original production specification for this pump family.
The plunger bearing supports the reciprocating plunger inside a diaphragm pump, providing a precision running surface that keeps the plunger aligned and moving smoothly through each stroke. As the plunger cycles, this bearing absorbs lateral forces and reduces friction, which directly affects how evenly the diaphragm flexes and how consistently the pump delivers fluid. When the bearing wears, the plunger develops side-to-side movement that accelerates diaphragm fatigue, degrades seal integrity, and causes uneven or reduced output — making timely bearing replacement critical to maintaining pump performance.
Part Details
| Part Number | 336019090 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Plunger Bearing |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3HA |
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.
