The Wacker Neuson is a genuine OEM Retaining Ring designed for the PDT and PDI series diaphragm pumps, including the PDT3A, PDT3, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) models. As a direct OEM part, the is manufactured to the exact dimensional and material specifications Wacker Neuson requires, ensuring correct fitment within the pump assembly without modification. This retaining ring is the correct factory component for keeping internal pump elements securely seated during operation, making it an essential part of any diaphragm pump service or rebuild. Whether you are restoring a PDT2A on a smaller site or overhauling a PDT3A in heavy continuous-duty use, this is the part Wacker Neuson specifies for the job.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to the exact diameter and groove-depth tolerances required for secure retention inside Wacker Neuson PDT and PDI diaphragm pump assemblies.
- Drop-In Replacement — Seats directly into the original retaining groove with no reworking of surrounding components; engineered to the same snap-fit specification as the part it replaces.
- Broad PDT/PDI Series Coverage — A single part number covers PDT3A, PDT3, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) diaphragm pump configurations, simplifying parts inventory across your fleet.
- Maintains Internal Component Alignment — Holds critical pump internals in their correct axial position; a worn or missing retaining ring allows components to shift, causing accelerated wear or pump failure.
- Essential Rebuild Component — A standard replacement item during diaphragm pump overhauls; stocking part 5000179880 keeps rebuild kits complete and pumps back in service faster.
A retaining ring is a precision fastening component that locks rotating or stationary internal parts in place within a bore or on a shaft by snapping into a machined groove. In a diaphragm pump, it secures key internals — such as drive or valve components — so they remain correctly positioned under the cyclical pressure loads generated during pumping. When a retaining ring becomes worn, corroded, or damaged, the components it holds can shift axially or disengage entirely, leading to loss of pump output, internal damage, or complete pump failure. Replacing it at the first sign of wear or during any scheduled pump service is the most cost-effective way to maintain consistent pump performance.
Part Details
| Part Number | 5000179880 |
|---|---|
| Old Part Number | 0179880 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Retaining Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT3A | PDT3A | 5000620773, 5100075507 |
| PDT3 | PDT3 | 5000620774 |
| PDI3A | PDI3A | 5000620775, 5100075508 |
| PDI3A(I) | PDI3A(I) | 5000620776, 5100075509 |
| PDT2A | PDT2A | 5100075510 |
| PDI2A(I) PUMP | PDI2A(I) | 5100075511 |
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.
