The Multiquip 335412100 is a genuine OEM Idler Pinion Shaft designed for MQD2H, MQD3H, MQD2HA, and MQD3HA diaphragm pumps. As a direct Multiquip OEM component, 335412100 is manufactured to the same specifications as the original part, ensuring a precise drop-in fit with no guesswork on compatibility. Whether you are performing scheduled maintenance or replacing a worn shaft on a working pump, this is the correct part for your MQD series diaphragm pump. DHS Equipment stocks genuine Multiquip OEM parts so you can get your equipment back in service fast.
Key Features
- Genuine OEM Shaft Integrity — Manufactured to Multiquip's original material and dimensional tolerances, ensuring the shaft transmits drive force through the gear train without flex or premature wear.
- Direct-Fit Replacement — Engineered to install in the same position as the original idler pinion shaft, aligning correctly with mating gears without machining or shimming.
- Confirmed Fitment for MQD Series Diaphragm Pumps — Verified compatible with MQD2H, MQD3H, MQD2HA, and MQD3HA diaphragm pump models.
- Sustained Drive Transmission — A correctly functioning idler pinion shaft maintains smooth, consistent power transfer through the pump's drive system, keeping diaphragm stroke rate and output flow at rated capacity.
- Verified Part Number — Order with confidence knowing 335412100 is the exact Multiquip OEM part number for this component across all covered MQD pump models.
The idler pinion shaft is a core component of a diaphragm pump's mechanical drive train, transmitting rotational power between gears to drive the diaphragm back and forth and create the pumping action. It sits between the drive gear and the output mechanism, acting as an intermediate transfer point that keeps the entire drive system in proper timing and alignment. When this shaft wears, bends, or fails, the pump loses consistent diaphragm stroke, resulting in reduced flow output, irregular pumping cycles, or a complete loss of pump function.
Part Details
| Part Number | 335412100 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Idler Pinion Shaft |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2H |
| Diaphragm Pumps | MQD3H |
| 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.
