The Wacker Neuson Flat Washer is a genuine OEM component designed for the PDT2A, PDT2, PDT3A, PDT3, PDI2A(I), PDI3A, and PDI3A(I) series diaphragm pumps. Sourced directly from Wacker Neuson, this washer is manufactured to the same standards as the original hardware installed on the production line. Verified fitment covers both 2-inch and 3-inch PDT and PDI pump variants, making it a straightforward like-for-like swap when servicing or reassembling these units.
Key Features
- Genuine OEM Hardware Consistency — Manufactured to the exact material grade and dimensional tolerances of the original washer, ensuring correct load distribution and seating across fastened joints.
- Drop-In Replacement — Matches the original hole diameter, outer diameter, and thickness so it installs in the same position without modification to surrounding hardware.
- Broad PDT and PDI Series Coverage — Confirmed fit for PDT2A, PDT2, PDT3A, PDT3, PDI2A(I), PDI3A, and PDI3A(I) diaphragm pump models, covering both 2-inch and 3-inch discharge configurations.
- Protects Mating Surfaces — Distributes clamping force evenly across fastener contact points, preventing surface damage, deformation, or loosening under pump vibration and operational load.
- Correct Part for Fluid-System Fastening — Using the correct OEM washer in a pump assembly ensures fastener preload is maintained properly, helping to keep connections secure in wet, high-vibration pump environments.
A flat washer serves as a load-spreading interface between a fastener — such as a bolt head or nut — and the surface it clamps against. In diaphragm pump assemblies like the PDT and PDI series, washers play a critical role in maintaining consistent clamping force across cover plates, housings, and mounting points that are subject to continuous vibration during pumping operation. When a washer becomes deformed, corroded, or lost during service, the fastener can work loose or bite into softer mating surfaces, compromising the integrity of the assembly and potentially leading to leaks or structural play in the pump housing.
Part Details
| Part Number | 5000179866 |
|---|---|
| Old Part Number | 0179866 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flat Washer |
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.
