The Multiquip 335412200 Input Pinion is a genuine OEM component designed for MQD2H and MQD3H diaphragm pumps. As an authorized OEM part, it is produced to the exact specifications of the original, ensuring a direct, accurate fit within the pump's drive train. This pinion is confirmed compatible with MQD2H and MQD3H series diaphragm pumps, making it the correct choice when the original component requires replacement. Sourced directly through Multiquip's OEM supply chain, the 335412200 delivers the precision fit that keeps your pump performing as intended.
Key Features
- Genuine OEM Gear Precision — Manufactured to exact tooth profile and hardness specifications, ensuring proper mesh and load transfer within the drive assembly.
- Direct Drive Train Fit — Engineered to seat and engage exactly as the original pinion, with no reworking of the gear housing or drive shaft required.
- Confirmed Fitment — Compatible with MQD2H and MQD3H Multiquip diaphragm pumps; verify your model before ordering.
- Sustained Pump Output — A correctly functioning input pinion transfers rotational force to the pump mechanism consistently, maintaining steady flow rate and pressure delivery across the full duty cycle.
- Protects Adjacent Components — A worn or damaged pinion accelerates wear on mating gears and the drive shaft; replacing it promptly prevents cascading damage to the wider gear train.
The input pinion is a critical gear within the diaphragm pump's drive system, responsible for transmitting rotational power from the engine or motor input shaft into the pump mechanism. It meshes with the broader gear train to convert and transfer torque, directly driving the diaphragm's reciprocating action that moves fluid through the pump. When the input pinion is worn, chipped, or fails, the drive train loses efficiency or stops transmitting power altogether, resulting in reduced flow, irregular pumping cycles, or complete pump stoppage.
Part Details
| Part Number | 335412200 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Input Pinion |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2H |
| Diaphragm Pumps | MQD3H |
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.
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