The Wacker Neuson Washer is a genuine OEM component designed for the PDT and PDI series diaphragm pumps, including the PDT2A, PDT3A, PDI2A(I), PDT3, PDI3A, and PDI3A(I) models. As a factory-original part, it is manufactured to the same specifications as the washer that left the production line, ensuring a consistent, direct fit within the pump assembly. Fitment is verified across multiple machine numbers in both the PDT2 and PDT3 pump families, covering a broad range of diaphragm pump configurations. Keep a spare on hand to support routine maintenance and keep your pump performing at full capacity.
Key Features
- Genuine OEM Construction — Sourced directly from Wacker Neuson, this washer meets the exact material grade and dimensional tolerancing specified for diaphragm pump assemblies — no guesswork on fit or material compatibility.
- Direct Drop-In Replacement — Engineered to seat and torque exactly as the original, this washer installs without modification into the pump assembly hardware stack.
- Broad PDT and PDI Pump Compatibility — Verified fitment across the PDT2A, PDT3A, PDT3, PDI2A(I), PDI3A, and PDI3A(I) diaphragm pump models, covering a wide range of Wacker Neuson pump configurations.
- Maintains Sealing Integrity — A correctly installed washer ensures proper load distribution across fasteners and mating surfaces, preventing fluid leaks and premature wear in the pump housing.
- Part Number 5000179861 Confirmed — Cross-referenced against multiple Wacker Neuson machine numbers in both the 5000 and 5100 series to ensure you receive the right part the first time.
A washer in a diaphragm pump assembly serves as a load-distributing interface between fasteners and the pump's mating surfaces, ensuring even clamping force across housing joints, covers, and fluid passages. Without a properly functioning washer, fasteners can embed unevenly into softer housing materials, leading to loose connections, fluid leaks, and accelerated wear on surrounding components. When a washer becomes deformed, corroded, or missing entirely, the pump's ability to maintain a sealed, pressurized fluid path is compromised — making it a small but critical part of the overall pump's reliability.
Part Details
| Part Number | 5000179861 |
|---|---|
| Old Part Number | 0179861 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Washer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT2A | PDT2A | 5000620769, 5100075510 |
| PDT2 Pump, Diaphragm | PDT2 | 5000620770 |
| PDI2A(I) | PDI2A(I) | 5000620772, 5100075511 |
| PDT3A | PDT3A | 5000620773, 5100075507 |
| PDT3 | PDT3 | 5000620774 |
| PDI3A | PDI3A | 5000620775, 5100075508 |
| PDI3A(I) | PDI3A(I) | 5000620776, 5100075509 |
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.
