The Wacker Neuson Nipple Fitting is a genuine OEM component designed for HP252, Pureheat, S3000, and E3000 hydronic heaters and hydronic air heaters. As a genuine OEM part, it is manufactured to the same specification as the original, ensuring a correct, leak-free connection within the fluid circuit. This fitting is compatible across multiple Pureheat configurations — including oil burner, gas burner, and diesel variants — as well as the S3000 Hydronic Surface Heater and E3000 series. Confirming part number against your machine's parts diagram before ordering is always recommended.
Key Features
- OEM-Spec Thread and Sealing Geometry — Manufactured to exact dimensional tolerances so the fitting seats and seals correctly within the hydronic fluid circuit without leaks or improvised adapters.
- Direct Drop-In Connection — Threads and port sizing match the original installation points on HP252, Pureheat, S3000, and E3000 heater plumbing, so the fitting installs straight from the box.
- Broad Heater Family Coverage — A single part number serves the HP252, Pureheat Oil Burner, Pureheat Gas Burner, Pureheat Diesel, S3000 Hydronic Surface Heater, and E3000 series.
- Maintains Fluid System Integrity — A sound nipple fitting keeps the heating fluid circuit pressurized and flowing correctly; a cracked or corroded fitting can cause fluid loss, pressure drop, and heater shutdown.
- Genuine Wacker Neuson OEM Part — Sourced directly through the Wacker Neuson parts network, carrying the same part number — 5000168139 — used by authorized service technicians worldwide.
A nipple fitting is a short threaded connector used to join two sections of pipe or hose within a fluid circuit. In hydronic heaters like the Pureheat and E3000, these fittings are critical links in the loop that circulates heated fluid to surface heaters, air handlers, or distribution hoses. When a nipple fitting corrodes, cracks, or develops a thread failure, the resulting fluid leak disrupts system pressure and can force a heater shutdown — especially in cold-weather concrete curing or ground-thaw applications where continuous heat delivery is essential.
Part Details
| Part Number | 5000168139 |
|---|---|
| Old Part Number | 0168139 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nipple Fitting |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HP252 | HP252 | 5000620249 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190, 5000620220 |
| Hydronic Surface Heater w/ Gen erator, 3000 ft hose | S3000 | 5000620218, 5000620182 |
| E3000 | E3000 | 5100055568, 5100056441, 5100056440 |
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.
