The Wacker Neuson Nipple Fitting is a genuine OEM component designed for the E-Series and HSH-Series hydronic surface heaters and ground heaters, including the E1100, E2200, E3000, E3000 ES, E5000, HSH350, HSH650, HSH700, Pureheat, HP252, S3000, and E700M families. As a direct OEM replacement, the is manufactured to the same specifications as the original part installed at the factory, ensuring a correct, leak-free connection within the fluid circuit. Whether you are servicing a ground heater on an active cold-weather pour or maintaining a hydronic surface heater between seasons, this fitting delivers the precise thread form and material integrity the system demands.
Key Features
- OEM Thread Form and Material Integrity — Manufactured to exact Wacker Neuson specifications, ensuring the correct thread pitch, sealing surface, and pressure rating for hydronic fluid circuits.
- Drop-In Replacement — Matches the original port geometry and connection type, allowing straightforward installation without rework to surrounding hose or manifold connections.
- Broad HSH and E-Series Fitment — Compatible across E1100, E2200, E3000, E3000 ES, E5000, HSH350, HSH650, HSH700, HP252, S3000, E700M, and Pureheat hydronic heater models.
- Leak-Free Fluid Circuit Performance — A correctly seated nipple fitting maintains system pressure and prevents glycol or water loss that would reduce heating output and lead to pump cavitation.
- Genuine OEM Confidence — Sourced directly from Wacker Neuson, this part carries the same part number — 5000168331 — used by authorized dealers and service centers worldwide.
A nipple fitting is a short threaded connector used to join two sections of pipe, hose, or manifold ports within a hydronic heating system's fluid circuit. In ground heaters and hydronic surface heaters, the fitting carries pressurized heated fluid between the boiler, pump, and distribution hose — meaning a cracked, corroded, or cross-threaded fitting can cause glycol leaks that depressurize the system and halt heat transfer entirely. Replacing a worn or damaged nipple fitting promptly restores circuit integrity and keeps the heating system operating at full output in demanding cold-weather concrete curing and ground thawing applications.
Part Details
| Part Number | 5000168331 |
|---|---|
| Old Part Number | 0168331 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nipple Fitting |
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 |
| E5000 GROUND HEATER, W/GAS BURNER | E5000 | 5000620898, 5000620897, 5000620899 |
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
| HP252 | HP252 | 5000620249 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190, 5000620220 |
| E1100 GROUND HEATER | E1100 | 5000620172, 5000620244, 5200001676 |
| E3000 ES Hydronic Surface Heater | E3000ES | 5000620968, 5000620967 |
| Hydronic Surface Heater w/ Gen erator, 3000 ft hose | S3000 | 5000620218, 5000620182 |
| HSH650 | HSH650 | 5000620991 |
| 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.
