The Multiquip 213400002 Plunger Arm is a genuine OEM component designed for MQD2HA and MQD3HA diaphragm pumps. Sourced directly from Multiquip, this part meets the same specifications as the original, ensuring a correct installation with no guesswork on fitment. If you're servicing an MQD2HA or MQD3HA unit, part 213400002 is the confirmed direct replacement for the plunger arm position. DHS Equipment stocks genuine Multiquip parts so you can get your pump back in service with confidence.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original design tolerances, ensuring the arm delivers the correct stroke geometry and load bearing required for consistent diaphragm actuation.
- Direct Drop-In Replacement — Matches the original mounting points and pivot dimensions on MQD2HA and MQD3HA pumps, allowing straightforward installation during scheduled maintenance or emergency repair.
- Confirmed Fitment — Verified for MQD2HA and MQD3HA Multiquip diaphragm pump models; always cross-reference your unit's model code before ordering.
- Sustained Pumping Output — A correctly functioning plunger arm maintains full diaphragm travel, preserving rated flow and discharge pressure; a worn or bent arm causes reduced output and uneven pump stroke.
- Durable Under Cyclic Load — Built to handle the repetitive reciprocating forces inherent to diaphragm pump operation, resisting fatigue and deformation over extended service intervals.
The plunger arm is a critical mechanical link in a diaphragm pump's drive system. It converts rotational motion from the engine-driven eccentric into the back-and-forth stroke that flexes the diaphragm, which in turn draws fluid in and pushes it out through the discharge port. When the plunger arm is worn, bent, or broken, the diaphragm loses proper actuation — resulting in weak suction, reduced flow rate, or complete pump failure. Replacing a damaged plunger arm with a genuine Multiquip part restores full stroke travel and returns the pump to its intended performance level.
Part Details
| Part Number | 213400002 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Plunger Arm |
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.
