The Wacker Neuson 5200021769 Coupling is a genuine OEM component designed for the APT4S and APT4T pump series. This includes the APT4S Pump with Skid, APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, and all corresponding Cold Weather variants across both families. As a direct OEM replacement, the 5200021769 is manufactured to the same specifications as the original part, ensuring a consistent, reliable installation every time. Keep the APT4 series running at full capacity with this Wacker Neuson-sourced coupling.
Key Features
- Genuine OEM Torque Transmission Integrity — Manufactured to the same material and dimensional tolerances as the original, ensuring proper torque transfer between connected drive components without slippage or misalignment.
- Drop-In Replacement for APT4 Series Pumps — Engineered to match the original mounting interface, so it seats and connects exactly as the factory part did with no improvised fitting required.
- Broad APT4 Family Coverage — Compatible with APT4S Pump with Skid, APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, and all Cold Weather variants of each configuration.
- Protects Pump Drive Components — A correctly functioning coupling absorbs minor shock loads and maintains shaft alignment; a worn or failed coupling accelerates bearing wear and can cause pump drive failure.
- OEM Part Number Verified — Sold under Wacker Neuson part number 5200021769, so you can cross-reference your parts manual and order with confidence.
A coupling connects two rotating shafts or drive components within a pump system, transmitting power from the engine or motor to the pump end while accommodating minor shaft misalignment and dampening vibration. In the APT4S and APT4T pump series, the coupling plays a direct role in maintaining smooth, consistent pump operation. When a coupling wears, cracks, or fails, drive efficiency drops, vibration increases, and surrounding components such as bearings and seals are placed under additional stress that can lead to broader mechanical failure.
Part Details
| Part Number | 5200021769 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Coupling |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
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.
