The Wacker Neuson 5200021829 is a genuine OEM Overflow Bottle designed for APT4T and APT4S series submersible pump trailers, including standard, Cold Weather, Electric Brake, and Surge Brake configurations. As a direct OEM replacement, this part is manufactured to the same specifications as the original, ensuring a correct fit on every supported configuration. Fitment covers the APT4T Pump with Electric Brake, APT4T Pump with Surge Brake, APT4T Pump with Surge Brake Cold Weather, APT4T Pump with Electric Brake Cold Weather, APT4S Pump with Skid, and APT4S Pump with Skid Cold Weather. When your original overflow bottle becomes cracked, damaged, or begins to leak, replacing it promptly with the correct OEM part keeps the cooling and fluid management system functioning as intended.
Key Features
- Genuine OEM Construction — Molded to the same material grade and volume capacity as the original, ensuring proper fluid retention and pressure management within the cooling circuit.
- Direct Bolt-On Replacement — Matches original mounting points and hose connections on APT4T and APT4S pump trailers for a straightforward swap during routine service.
- Broad Configuration Coverage — Compatible with Electric Brake, Surge Brake, standard, and Cold Weather variants across both the APT4T and APT4S platform.
- Protects the Cooling Circuit — A properly functioning overflow bottle maintains correct coolant volume and prevents air ingestion, which can lead to overheating and premature pump motor wear.
- Verified Wacker Neuson Part Number — Sourced directly from Wacker Neuson, so you can order with confidence that 5200021829 is the correct part for your machine configuration.
The overflow bottle serves as a reservoir for excess coolant in the pump's liquid cooling circuit. As the engine or motor reaches operating temperature, coolant expands and flows into the bottle; as the system cools, that fluid is drawn back in, keeping the circuit full and free of air pockets. A cracked or missing overflow bottle disrupts this cycle, causing coolant loss, inconsistent operating temperatures, and the risk of overheating damage to internal components.
Part Details
| Part Number | 5200021829 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Overflow Bottle |
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.
