The Wacker Neuson Diaphragm is a genuine OEM component designed for the P35 Wet Screed Power Unit and PG1 Dewatering Pump series. As a direct factory replacement, this diaphragm is produced to the exact material and dimensional specifications required by these machines, ensuring a drop-in installation with no guesswork. Sourcing the correct OEM diaphragm matters — an ill-fitting or degraded diaphragm can disrupt fluid or air displacement, leading to inconsistent output and potential equipment damage. Keep part number on hand as a service spare to stay ahead of wear-related failures.
Key Features
- OEM-Grade Membrane Material — Manufactured to Wacker Neuson's exact material specification, delivering the flex fatigue resistance and sealing performance this diaphragm application demands.
- Direct-Swap Installation — Matches the original mounting profile and port dimensions exactly, seating into position the same way the factory part does — no trimming, stretching, or adaptation needed.
- Verified Fitment for P35 and PG1 Series — Confirmed for the P35 Wet Screed Power Unit and PG1 Dewatering Pump, covering both concrete finishing and fluid transfer applications.
- Restores Full Displacement Efficiency — A correctly functioning diaphragm maintains consistent pump stroke and output pressure; a cracked or hardened unit causes pressure drop, uneven flow, and accelerated wear on surrounding components.
- Fuel and Fluid System Integrity — In carburetor and pump diaphragm applications, correct sealing is critical to prevent fuel or fluid ingestion into unintended chambers — making OEM material grade a genuine safety consideration.
A diaphragm is a flexible membrane that creates the reciprocating pressure needed to move fuel, air, or fluid through a pump or carburetor circuit. It flexes under mechanical or vacuum load with each cycle, pushing fluid through inlet and outlet valves in a controlled, one-directional flow. When the diaphragm hardens, cracks, or develops pinholes, the pumping circuit loses prime and pressure — resulting in hard starting, weak output, or complete pump failure until the membrane is replaced.
Part Details
| Part Number | 5000207439 |
|---|---|
| Old Part Number | 0207439 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diaphragm |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Wet Screed Power Unit | P35 | 5000620006 |
| Dewatering Pump | PG1 | 5200019694 |
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.
