The Multiquip 337009096 is a genuine OEM Gearbox Assembly Complete 3-Inch designed for MQD2HA and MQD3HA diaphragm pumps. As a direct OEM replacement sourced from Multiquip, this assembly ships with input and output half components etched with identifiers starting with 337, ensuring you receive the correct configuration for your machine. This assembly is confirmed to fit both MQD2HA and MQD3HA models, making it the dependable choice when a full gearbox replacement is required. Ordering the correct OEM assembly eliminates guesswork and keeps your diaphragm pump operating at rated capacity.
Key Features
- Complete OEM Gearbox Assembly — Supplied as a fully assembled unit with matched input and output halves, so you replace the entire gearbox in one service event rather than sourcing individual components separately.
- 3-Inch Input/Output Configuration — Sized specifically for the 3-inch drive interface on MQD-series diaphragm pumps, ensuring proper torque transfer between the drive motor and pump mechanism without adaptation.
- Etched Identification (Starts W/ 337) — Input and output half components are factory-etched with identifiers beginning with 337, making part verification straightforward during inspection and reassembly.
- Verified Fitment for MQD2HA and MQD3HA — Confirmed compatible with both MQD2HA and MQD3HA Multiquip diaphragm pump models, so you can order with confidence against your machine's model code.
- Sustained Pump Output — A correctly functioning gearbox maintains the drive ratio needed to deliver consistent diaphragm stroke rate; a worn or damaged gearbox causes loss of flow, erratic pumping cycles, and accelerated wear on surrounding drivetrain components.
The gearbox assembly is the mechanical heart of a diaphragm pump's drive system, converting motor output into the reciprocating motion that moves the diaphragm and pushes fluid through the pump. When the gearbox wears or fails, the pump loses its ability to maintain a consistent stroke, resulting in reduced flow rates, irregular discharge, or a complete stoppage. Replacing the full assembly rather than individual internal gears ensures all mating surfaces are correctly toleranced and properly aligned from the first stroke after installation.
Part Details
| Part Number | 337009096 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Gearbox Assembly Complete 3-Inch Input/Output |
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.
Multiquip
Multiquip 337040290 Gearbox Assembly Complete 3-Inch Input/Output Half Etched Starts With 335
