The Wacker Neuson Plug is a genuine OEM component designed for the E1250 and HSH380 series hydronic surface heaters. This includes E1250S, E1250B, and E1250P models across LP/NG and Diesel configurations, as well as HSH380S and HSH380B units — with and without generators. As a direct OEM replacement, part number is manufactured to the original specification, ensuring a correct, consistent fit every time it is installed.
Key Features
- Genuine OEM Construction: — Manufactured to Wacker Neuson's original specification, delivering the correct sealing integrity and connection performance expected of a fluid-system plug in a hydronic heating application.
- Drop-In Replacement: — Matches the original port dimensions and thread profile, allowing the plug to seat and seal without modification to the heater's plumbing or housing.
- Broad Series Fitment: — Confirmed fit across E1250S, E1250B, and E1250P hydronic heaters in LP/NG and Diesel configurations, plus HSH380S and HSH380B models with and without integrated generators.
- Maintains Fluid System Integrity: — A properly seated plug prevents fluid loss and pressure drop in the hydronic circuit, keeping heat transfer consistent and protecting the system from contamination or air ingestion.
- Fuel and Fluid Compatibility: — Designed to withstand the thermal and chemical conditions present in a hydronic heating loop, including exposure to glycol-based heat transfer fluids at operating temperatures.
A plug in a hydronic surface heater serves as a closure point within the fluid circuit — sealing off ports, service connections, or bypass paths that are not in active use. When the plug is correctly seated, it maintains the closed-loop pressure needed for efficient heat transfer throughout the system. A cracked, stripped, or missing plug can cause fluid leaks, loss of system pressure, and reduced heating output, ultimately affecting the machine's ability to cure concrete or protect surfaces in cold-weather conditions.
Part Details
| Part Number | 5200022889 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E12540B | E1250B | 5200012353, 5200007613 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359, 5200007614 |
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.
