The Wacker Neuson 5200021618 is a genuine OEM Fuel Pump designed for the APT4T and APT4S series self-priming trash pumps, covering both standard and cold weather configurations. As a direct OEM replacement, this part is manufactured to the same specifications as the original component, ensuring a correct fit across the full range of compatible APT4T and APT4S models. Fitment includes the APT4T Pump with Electric Brake, APT4T Pump with Surge Brake, APT4S Pump with Skid, and their respective cold weather variants. Verify your model number and machine number before ordering to confirm compatibility.
Key Features
- Genuine OEM Fuel Delivery Integrity — Manufactured to the original flow rate and pressure specifications required by the APT4T and APT4S engine systems, ensuring consistent fuel supply without adaptation.
- Direct-Fit Replacement — Mounts using the original hardware points and fuel line connections, making installation straightforward for technicians familiar with the APT series platform.
- Broad APT Series Coverage — Compatible with APT4T (Electric Brake, Surge Brake) and APT4S (Skid) models in both standard and cold weather configurations.
- Sustained Engine Performance — A correctly functioning fuel pump maintains steady engine operation under load; a worn or failing pump leads to hard starting, rough running, and reduced pumping output.
- Fuel System Safety — A properly sealed OEM fuel pump prevents fuel leaks at the pump body and connections, reducing fire and hazard risk on the worksite.
The fuel pump draws fuel from the tank and delivers it at the correct pressure and volume to the engine's carburetor or fuel system. On trash pump applications like the APT4T and APT4S, consistent fuel delivery is critical to maintaining engine speed and pumping performance under variable load conditions. When the fuel pump weakens or fails, the engine may struggle to start, run erratically, or stall under load — interrupting dewatering operations and potentially causing unplanned downtime.
Part Details
| Part Number | 5200021618 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fuel Pump |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4T Pump, Electric Brake | APT4T | 5200019644, 5200019643 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
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.
