The Wacker Neuson Return Pipe is a genuine OEM component designed for the HP252 and Pureheat Hydronic Heater series, including Oil Burner, Gas Burner, and Diesel-powered configurations. As a direct OEM part, the is manufactured to the exact specifications of the original, ensuring a proper fit within the hydronic heating circuit without the need for modification or improvisation. This return pipe is compatible across the Pureheat line — covering Hydronic Air Heater Diesel variants as well as the standard Pureheat Hydronic Heater models — making it a reliable sourcing choice when servicing multiple units in a fleet. Keep your heating system operating as designed by replacing worn or damaged components with the correct Wacker Neuson part.
Key Features
- Genuine OEM Fluid-Path Integrity — Manufactured to exact original dimensions and material specifications, maintaining leak-free performance within the hydronic circuit.
- Direct Drop-In Replacement — Engineered to connect to the existing fittings and routing points in the Pureheat and HP252 hydronic systems, restoring the original plumbing layout.
- Broad Pureheat Series Compatibility — Fits the HP252, Pureheat Hydronic Heater Oil Burner, Pureheat Hydronic Heater Gas Burner, and Hydronic Air Heater Diesel models in a single part number.
- Sustained Heating Output — A correctly functioning return pipe keeps coolant or heat-transfer fluid cycling through the system efficiently; a cracked or blocked pipe can cause overheating, uneven heat distribution, or complete system shutdown.
- Fuel and Fluid System Safety — As part of the pressurized fluid circuit in a combustion-based heater, a sound return pipe is critical to preventing leaks that could create fire or fluid hazard on the jobsite.
The return pipe is a key component in the hydronic heating circuit, responsible for routing heat-transfer fluid back from the heat exchanger or distribution points to the heater unit for reheating and recirculation. Without a properly functioning return pipe, fluid flow through the system becomes restricted or lost entirely, causing the heater to lose efficiency or overheat. Over time, exposure to elevated temperatures, pressure cycling, and thermal expansion can cause the pipe to crack, corrode, or develop leaks — making timely replacement essential to keeping the heating system safe and fully operational.
Part Details
| Part Number | 5000165991 |
|---|---|
| Old Part Number | 0165991 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Return Pipe |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HP252 | HP252 | 5000620249 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190, 5000620220 |
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.
