The Wacker Neuson 5200021789 is a genuine OEM Connector designed for the APT4T, APT6T, and APT8T pump series. This part covers a wide range of configurations, including surge brake and electric brake variants as well as standard and cold weather models across all three pump sizes. As a direct OEM replacement, the 5200021789 is manufactured to the same specifications as the original component installed at the factory, ensuring correct mating and secure connection with existing wiring and hardware. Verify your model number against the fitment list before ordering to confirm compatibility with your specific unit.
Key Features
- Genuine OEM Electrical Integrity — Manufactured to original connector specifications, ensuring correct contact rating, pin alignment, and secure locking engagement for the APT pump electrical system.
- Drop-In Replacement — Matches the original connector interface, allowing direct installation without reworking wiring harnesses or sourcing adapter hardware.
- Broad APT Series Fitment — Compatible with APT4T, APT6T, and APT8T pumps in both surge brake and electric brake configurations, including standard and cold weather variants.
- Consistent Electrical Connection — A properly seated connector maintains stable signal and power delivery to the brake system; a loose or damaged connector can cause intermittent brake faults or complete brake circuit failure.
- Brake System Safety Relevance — Because this connector serves the brake circuit on trailered pump units, using a correctly rated OEM connector helps ensure the brake system responds as intended during towing operations.
The connector on the APT pump series provides the electrical interface between the machine's wiring harness and its brake control circuit — whether that system uses a surge brake or electric brake configuration. It carries the signals and current needed for the brake system to function correctly during transport. When a connector becomes corroded, cracked, or loses its locking retention, the electrical connection becomes unreliable, which can result in inconsistent brake engagement or a complete loss of brake circuit continuity — a critical concern on any trailered equipment.
Part Details
| Part Number | 5200021789 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Connector |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6T Pump, Electric Brake, Cold Weather | APT6T CW | 5200019795, 5200019794 |
| APT6T Pump, Electric Brake | APT6T | 5200019647, 5200019646 |
| APT8T Pump, Electric Brake, Cold Weather | APT8T CW | 5200019797, 5200019796 |
| APT4T Pump, Electric Brake, Cold Weather | APT4T CW | 5200019793, 5200019792 |
| APT8T Pump, Surge Brake | APT8T | 5200019648, 5200019649 |
| APT4T Pump, Electric Brake | APT4T | 5200019644, 5200019643 |
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.
