The Wacker Neuson 5200021823 is a genuine OEM Isolator Pad designed for the APT4T and APT4S series trailer-mounted pumps. This direct OEM replacement is sourced and verified for the full APT4T and APT4S lineup, covering Electric Brake, Surge Brake, standard, and Cold Weather configurations. As a genuine Wacker Neuson part, the 5200021823 meets original design specifications for material grade and compression characteristics — keeping vibration isolation working the way the machine was engineered. Confirm your model number against the fitment list before ordering to ensure a correct application match.
Key Features
- Engineered Vibration Damping: — Manufactured to the original material and compression spec, this isolator pad absorbs pump vibration at the mounting interface — not a generic rubber pad cut to size.
- Genuine OEM Part: — Sourced directly from Wacker Neuson, this is the same isolator pad installed at the factory — no guesswork on grade or durometer.
- Broad APT4 Series Coverage: — Fits APT4T (Electric Brake and Surge Brake) and APT4S (standard and Cold Weather) trailer pump configurations, including all Cold Weather variants.
- Drop-In Mounting Compatibility: — Matches original hole pattern and pad dimensions for the APT4T and APT4S frame mounting points — installs in place of the worn pad without modification.
- Protects Structural Integrity: — A degraded isolator pad transfers pump vibration directly into the trailer frame, accelerating wear on fasteners, mounts, and surrounding components. Replacing it on schedule prevents progressive structural damage.
An isolator pad sits between the pump unit and its mounting frame, absorbing the operational vibration generated by the pump during use. By cushioning this contact point, the pad protects the trailer frame, mounting hardware, and connected components from the cumulative stress of continuous vibration. When an isolator pad hardens, cracks, or collapses, vibration transfers unchecked into the frame — leading to loosened fasteners, accelerated wear on nearby parts, and increased noise during operation. Replacing a worn isolator pad restores the designed level of vibration isolation and helps maintain the structural health of the entire pump assembly.
Part Details
| Part Number | 5200021823 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Isolator Pad |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4T Pump, Electric Brake | APT4T | 5200019644, 5200019643 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| 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.
