The Wacker Neuson Diaphragm is a genuine OEM component designed for the B 3000 Gasoline Power Unit for Internal Vibrators and PDT2B 50mm/2in Diaphragm Trash Pumps. As a direct factory replacement, it restores the pumping and fluid-transfer function to the exact specification the machine was built around. This part fits multiple configurations of the PDT2B series, covering machine numbers and, as well as the B 3000 power unit platform. If your equipment is losing prime, outputting reduced flow, or leaking at the diaphragm chamber, is the correct OEM replacement to bring performance back to spec.
Key Features
- Genuine OEM Flex Integrity — Manufactured to Wacker Neuson's original material and thickness specification, ensuring the diaphragm flexes under rated pressure cycles without cracking or deforming prematurely.
- Direct-Fit Replacement — Matches the original mounting pattern and port dimensions of the B 3000 and PDT2B assemblies, dropping in place of the factory diaphragm without modification to the housing or retaining hardware.
- Covers Key PDT2B and B 3000 Configurations — A single part number serves the PDT2B 50mm/2in Diaphragm Trash Pump (both production variants) and the B 3000 Gasoline Power Unit for Internal Vibrators.
- Restores Full Flow and Prime Retention — A fatigued or torn diaphragm causes the pump to lose prime, surge, or fail to move fluid entirely; replacing it with part 5000020570 brings displacement volume and flow rate back to designed output.
- Fluid-Containment Safety — A compromised diaphragm can allow pumped media to contact internal mechanical components or leak externally; genuine OEM material integrity keeps fluid routed correctly and protects surrounding components.
The diaphragm is the flexible membrane at the heart of a diaphragm-type pump, alternately expanding and contracting to draw fluid in through the inlet check valve and push it out through the discharge check valve. In the PDT2B trash pump, it handles the movement of water and entrained solids, so fatigue, puncture, or chemical degradation directly kills pump output. In the B 3000 power unit, the diaphragm supports fuel or fluid metering functions critical to reliable engine operation and vibrator performance. When the diaphragm stiffens, tears, or develops pinholes, flow becomes erratic or stops entirely — making timely replacement with part 5000020570 essential to keeping the machine productive.
Part Details
| Part Number | 5000020570 |
|---|---|
| Old Part Number | 0020570 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diaphragm |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Gasoline Power Unit for Intern al Vibrator | B 3000 | 5000005829 |
| 50mm/2in Diaphragm Trash Pump | PDT2B | 5000007612, 5000007613 |
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.
