The Multiquip 336009401 Crank is a genuine OEM component designed for MQD2H and MQD3H diaphragm pumps. Sourced directly from Multiquip, this crank meets the exact engineering tolerances required to keep your pump operating with consistent, reliable stroke cycles. It is a direct-fit replacement for the original crank assembly used in MQD2H and MQD3H models, ensuring correct engagement with the drive mechanism without any guesswork. When your diaphragm pump crank wears or fails, replacing it with the correct OEM part is the fastest way to restore full pump performance on the job.
Key Features
- Genuine OEM Tolerancing — Manufactured to Multiquip's exact dimensional specifications for the crank mechanism, ensuring consistent stroke geometry and smooth power transfer through the pump drive.
- Direct-Fit Installation — Engineered to drop into the original crank position on MQD2H and MQD3H pumps, aligning correctly with drive shaft and connecting rod interfaces.
- Confirmed Fitment — Compatible with Multiquip MQD2H and MQD3H diaphragm pump models; verify your model before ordering to ensure a correct match.
- Consistent Pump Stroke Output — A properly functioning crank maintains even, predictable diaphragm displacement, which directly supports stable flow rate and pressure output from the pump.
- OEM Part Number Assurance — Part number 336009401 is the Multiquip-designated crank for these pump models, eliminating compatibility uncertainty when sourcing a replacement.
The crank in a diaphragm pump converts rotational motion from the engine or motor into the back-and-forth linear movement that drives the diaphragm. This reciprocating action is what creates the suction and discharge strokes that move fluid through the pump. When the crank wears, bends, or fails, the diaphragm stroke becomes irregular or stops entirely, resulting in reduced flow, pressure loss, or complete pump failure — making prompt replacement with a correctly specified part essential to restoring full operation.
Part Details
| Part Number | 336009401 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Crank |
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.
