The Wacker Neuson Coupling is a genuine OEM component designed for the E-series and HSH-series hydronic surface heaters and ground heaters, including the E3000, E3000ES, E2200, E1250, E1100, E700M, HSH700, HSH650, HSH380S, and HSH350 models, as well as the DPP33, DPP8.8, and SPP4.4 pump pack units. As a factory-sourced part, the is manufactured to the exact tolerances Wacker Neuson specifies for fluid system integrity in these heating systems. This coupling is a direct-fit replacement that restores the original fluid connection without the need for adaptation or modification. Confirm your model number before ordering to ensure this is the correct coupling for your specific machine configuration.
Key Features
- Exact OEM Fluid System Tolerances — manufactured to Wacker Neuson's original dimensional and pressure specifications, ensuring a leak-free connection in the hydronic circuit.
- Direct-Fit Replacement — engineered to connect precisely into the existing fluid line ports on E-series and HSH-series machines, matching the original coupling interface without rework.
- Broad Model Coverage — a single part number covers a wide range of E3000, E3000ES, E2200, E1250, E1100, HSH700, HSH650, HSH380S, HSH350, and pump pack configurations.
- Maintains Hydronic Circuit Performance — a correctly seated coupling keeps coolant or heated fluid flowing at consistent pressure; a worn or cracked coupling can cause flow loss, pressure drop, and reduced heating output across the hose run.
- Fluid System Safety — a properly sealed coupling prevents hot fluid leaks at connection points, supporting safe operation of the heating system on occupied worksites and under frozen-ground curing applications.
A coupling in a hydronic heating system connects two sections of fluid line, allowing pressurized hot water or glycol solution to flow continuously from the heater unit through the hose network to the heating blankets or ground thaw mats. It must maintain a secure, pressure-tight seal throughout heating cycles; if the coupling cracks, loosens, or degrades, the hydronic circuit loses pressure and heating efficiency drops — or fluid leaks onto the worksite entirely. Replacing a damaged or worn coupling with the correct OEM part restores full-circuit integrity and keeps the system operating at its rated output.
Part Details
| Part Number | 5000168385 |
|---|---|
| Old Part Number | 0168385 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Coupling |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E3000 Hydronic Surface Heater with generator | E3000 | 5000620219, 5000620679, 5000620158, 5000620678, 5200014677, 5200004952, 5100017807, 5100017809, 5200014678, 5200014679, 5200014720, 5100017806, 5100017808, 5200014721, 5100017810, 5100017811, 5100025046, 5100055568, 5100056441, 5100017801, 5100056440, 5100025045 |
| HSH700 | HSH700G | 5000620243 |
| E2200 GROUND HEATER, W/ LIFT BAIL | E2200 | 5000620215, 5000620176, 5000620216, 5000620226, 5100017448, 5100017449 |
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
| DPP33 Dual Pump Pack | DPP33 | 5000620429 |
| SPP4.4 Single Pump Pack | SPP4.4 | 5000620427 |
| DPP8.8 Dual Pump Pack | DPP8.8 | 5000620428 |
| E1250S | E1250S | 5200012355, 5200012354 |
| E1100 GROUND HEATER | E1100 | 5000620172, 5000620244, 5200001676 |
| E3000 ES Hydronic Surface Heater | E3000ES | 5000620968, 5000620967 |
| HSH650 | HSH650 | 5000620991 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| Hydronic Surface Heater, 700m hose | E700M | 5000620195 |
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.
