The Wacker Neuson Arm is a genuine OEM component designed for the PDT3A, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) series diaphragm pumps. As a direct OEM replacement, this arm is manufactured to the same specifications as the original part, ensuring a correct, trouble-free installation with no guesswork on fitment. Sourced directly from Wacker Neuson, part number carries the same quality assurance as the pump it was built for. Whether you're completing a scheduled service or replacing a worn component, this arm keeps your pump operating as intended.
Key Features
- Genuine OEM Integrity — Manufactured to Wacker Neuson's original design tolerances, so the arm maintains the precise movement and mechanical linkage the pump's diaphragm system depends on.
- Drop-In Replacement — Matches the original mounting points and connection geometry, allowing straightforward installation without reworking adjacent components.
- Broad Series Compatibility — Fits PDT3A, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) Wacker Neuson diaphragm pump models, covering both direct and indirect drive variants in the lineup.
- Sustained Pump Output — A correctly functioning arm maintains consistent diaphragm stroke, preserving the pump's rated flow and suction performance. A worn or damaged arm leads to erratic pumping action and reduced output.
The arm is a mechanical linkage component within a diaphragm pump's drive assembly. It transfers motion from the drive mechanism to the diaphragm, creating the reciprocating action that draws in and expels fluid with each cycle. When the arm wears, bends, or fails, the diaphragm stroke becomes inconsistent or stops entirely, resulting in lost prime, reduced flow, or complete pump failure. Replacing a worn arm promptly restores full pumping capacity and prevents secondary damage to surrounding drive components.
Part Details
| Part Number | 5100075621 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Arm |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT3A | PDT3A | 5100075507 |
| PDI3A | PDI3A | 5100075508 |
| PDI3A(I) PUMP DIAPHRAGM | PDI3A(I) | 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.
