The Wacker Neuson 5200021776 is a genuine OEM Main Wiring Harness designed for the APT4S, APT4T, APT6S, APT6T, APT8S, and APT8T series submersible pump units. As a direct OEM replacement, this harness is manufactured to the same specifications as the original, ensuring correct connector geometry, wire gauge, and routing for a seamless installation. Coverage spans skid-mounted, surge brake, electric brake, and cold weather variants across the full APT pump lineup — making this a single, verified part number for a wide range of configurations. Whether you are servicing a standard unit or a cold weather model, part number 5200021776 is the correct harness for the job.
Key Features
- OEM-Matched Conductor Specs — Built to the same wire gauge and insulation grade as the original harness, maintaining correct current capacity for all pump control and brake circuits.
- Connector-Ready Drop-In Fit — Terminates with factory-matched connectors that mate directly to existing pump and brake control plugs — no splicing, re-pinning, or adapter harnesses needed.
- Broad APT Series Coverage — A single part number covers APT4S, APT4T, APT6S, APT6T, APT8S, and APT8T units, including skid-mounted, surge brake, electric brake, and cold weather variants.
- Full Electrical System Integrity — A damaged or degraded wiring harness can cause intermittent control failures, brake malfunctions, or complete pump shutdown; replacing it with a correct OEM harness restores full system function.
- Brake Circuit Safety — This harness carries the control signals for both electric and surge brake systems; using the correct OEM replacement is essential to maintaining proper brake operation during towing and pump deployment.
The main wiring harness is the central electrical backbone of the APT pump unit, routing power and control signals between the motor, brake system, and any external control connections. It keeps every electrical circuit properly isolated and connected under the demanding wet and outdoor conditions these pumps operate in. When the harness degrades — through abrasion, corrosion, or connection failure — operators can experience erratic pump behavior, brake system faults, or complete loss of electrical function, making timely replacement critical to safe and reliable operation.
Part Details
| Part Number | 5200021776 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Main Wiring Harness |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Electric Brake | APT6T | 5200019647, 5200019646 |
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796, 5200019797 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT8T Pump, Surge Brake | APT8T | 5200019648, 5200019649 |
| APT8S Pump w/Skid, Cold Weather | APT8S CW | 5200019800 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT8S Pump w/Skid | APT8S | 5200018987 |
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.
