The Wacker Neuson Plug Threaded is a genuine OEM component designed for the APT4S and APT4T pump series, including standard, surge brake, electric brake, and cold weather variants. As a factory-sourced part, it meets the exact specifications of the original — ensuring a correct, secure fit with no guesswork. Compatible across the full APT4 pump lineup, this plug threads directly into the designated port on both skid-mounted and cold weather-configured units. Keep a spare on hand so pump servicing stays on schedule.
Key Features
- Genuine OEM Thread Integrity — Manufactured to Wacker Neuson's original thread pitch and material specification, so the plug seats and seals exactly as designed.
- Direct Threaded Installation — Threads straight into the original port without recutting or chasing — no adapters or modifications needed.
- Broad APT4 Series Coverage — Fits the APT4S Pump with Skid, APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, and all corresponding cold weather variants.
- Maintains Fluid Containment — A correctly seated threaded plug prevents fluid loss, contamination ingress, and pressure drop in the pump circuit — a worn or cross-threaded plug risks leaks that compromise pump output.
- Fluid System Integrity — Properly sealing open ports is essential to maintaining hydraulic and fluid system pressure; using the correct OEM plug eliminates the risk of incompatible thread forms causing slow leaks or port damage.
A threaded plug is used to seal an open or unused port in a pump housing or fluid circuit. It keeps contaminants out and prevents fluid from escaping during operation, transport, or service. When a threaded plug is missing, damaged, or incorrectly fitted, it can cause fluid leaks, pressure loss, and potential pump damage — making it a small part with a significant impact on overall system reliability.
Part Details
| Part Number | 5200020227 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug Threaded |
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.
