The Wacker Neuson Gearbox is a genuine OEM component designed for the PDT2A, PDT2, PDI2A(I), PDT3A, PDT3, PDI3A, and PDI3A(I) series diaphragm pumps. As a direct OEM replacement, this gearbox is manufactured to the same specifications as the original unit installed at the factory, ensuring correct gear ratios, shaft alignment, and housing tolerances right out of the box. This part covers a broad range of Wacker Neuson 2-inch and 3-inch diaphragm pump models, making it a versatile stock item for service fleets and rental operations. Confirm your model number against the fitment list before ordering to ensure a match.
Key Features
- Genuine OEM Gear Tolerancing — manufactured to the same mesh tolerances and load ratings as the original, maintaining correct power transfer from the engine to the diaphragm drive mechanism.
- Direct Housing-Match Replacement — bolt pattern, shaft dimensions, and housing geometry match the original, so the unit seats and fastens without modification to the pump frame.
- Broad Diaphragm Pump Fitment — compatible with PDT2A, PDT2, PDI2A(I), PDT3A, PDT3, PDI3A, and PDI3A(I) models, spanning both 2-inch and 3-inch discharge diaphragm pump families.
- Sustained Pumping Output — a correctly functioning gearbox maintains the precise eccentric drive motion that the diaphragm depends on; a worn or damaged gearbox causes erratic flow, reduced output, and accelerated diaphragm wear.
- Verified OEM Part Number — part number 5000180266 is the factory-assigned Wacker Neuson reference, giving you confidence that you are installing the correct unit for your specific pump model.
The gearbox in a diaphragm pump converts rotational engine power into the reciprocating motion that drives the diaphragm back and forth, creating the suction and discharge action that moves fluid through the pump. It is a core mechanical link between the engine and the pumping assembly, and its internal gears must maintain precise engagement to deliver consistent flow rates and pressure. When the gearbox wears or fails, the diaphragm stroke becomes inconsistent or stops entirely, resulting in loss of prime, reduced output, or complete pump failure — making timely replacement essential to keeping dewatering and fluid transfer operations running.
Part Details
| Part Number | 5000180266 |
|---|---|
| Old Part Number | 0180266 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Gearbox |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT2A | PDT2A | 5000620769 |
| PDT2 Pump, Diaphragm | PDT2 | 5000620770 |
| PDI2A(I) | PDI2A(I) | 5000620772 |
| PDT3A | PDT3A | 5000620773 |
| PDT3 | PDT3 | 5000620774 |
| PDI3A | PDI3A | 5000620775 |
| PDI3A(I) | PDI3A(I) | 5000620776 |
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.
