The Wacker Neuson Brush is a genuine OEM Brush designed for the APT4S and APT4T pump series, including standard, cold weather, surge brake, and electric brake configurations. Sourced directly from Wacker Neuson, this part meets the same specifications as the original component installed at the factory. It fits across the full range of APT4S and APT4T variants, making it the correct choice whether you're servicing a skid-mounted unit or a cold weather model. Keep part number on hand to minimize unplanned service interruptions on your pump equipment.
Key Features
- OEM Electrical Contact Integrity — Manufactured to the original carbon composition and dimensional spec, ensuring consistent contact pressure and conductivity across the brush's service life.
- Drop-In Replacement — Matches the original brush holder slot dimensions on APT4S and APT4T pumps, so installation follows the same procedure as the factory-fitted part.
- Broad APT Series Fitment — Compatible with APT4S Pump with Skid, APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, and all corresponding cold weather variants.
- Sustained Motor Output — A worn brush causes arcing, voltage drop, and erratic motor behavior; replacing with a correct OEM brush restores smooth, full-power pump operation.
- Electrical Safety Compliance — Using the correct OEM brush material and profile helps prevent excessive heat buildup at the commutator, protecting the motor winding and surrounding electrical components.
A brush is a small carbon or graphite block that maintains continuous electrical contact with the rotating commutator inside an electric motor. As the commutator spins, the brush transfers current to and from the rotor windings, enabling the motor to generate torque and drive the pump. Over time, brushes wear down through normal friction against the commutator surface — when a brush becomes too short or develops uneven contact, the motor may spark heavily, lose power, overheat, or fail to start altogether. Replacing a worn brush promptly with the correct part protects the commutator from scoring damage and keeps the motor running at full efficiency.
Part Details
| Part Number | 5200020243 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Brush |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| 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.
