The Wacker Neuson 5200021657 is a genuine OEM Coupling Kit designed for the APT6T and APT6S pump series, covering electric brake, surge brake, and cold weather configurations. As a factory-sourced component, it meets the same dimensional and material standards as the original part, ensuring a direct, correct installation without guesswork. The 5200021657 is compatible across the full APT6T and APT6S lineup, including skid-mounted and cold weather variants. If your pump is showing signs of drive slippage, vibration, or misalignment between the engine and pump end, replacing the coupling kit restores proper power transfer and protects both the motor and pump from premature wear.
Key Features
- Genuine OEM Construction: — Manufactured to the original coupling geometry and material spec, maintaining correct torque transmission characteristics for the APT6T and APT6S drive train.
- Drop-In Replacement: — Engineered to the same interface dimensions as the original, so it seats correctly between the motor and pump end without reworking mounts or shafts.
- Broad APT6 Series Coverage: — A single part number fits APT6T electric brake, APT6T surge brake, APT6S skid-mounted, and all corresponding cold weather variants.
- Restores Full Pump Output: — A worn or cracked coupling causes power loss, vibration, and uneven pump performance; a fresh coupling kit brings discharge flow and pressure back to operating spec.
- Protects Drivetrain Components: — A correctly functioning coupling absorbs minor shaft misalignment and shock loads, reducing stress transferred to the motor bearings and pump seal.
The coupling kit connects the drive motor to the pump end, transferring rotational power while accommodating minor shaft misalignment and absorbing torsional shock during startup and load changes. When the coupling wears or fails, energy transfer becomes inconsistent, leading to vibration, reduced flow output, and accelerated wear on the motor shaft and pump bearings. Replacing the coupling at the first sign of slippage or noise keeps the pump running at full efficiency and prevents secondary damage to surrounding drivetrain components.
Part Details
| Part Number | 5200021657 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Coupling Kit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6T Pump, Electric Brake | APT6T | 5200019647, 5200019646 |
| APT6T Pump, Electric Brake, Cold Weather | APT6T CW | 5200019795, 5200019794 |
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
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.
