The Wacker Neuson Nipple Fitting is a genuine OEM component designed for the HI 770 XHD and Arctic Bear XHD series indirect-fired diesel air heaters. As a direct OEM replacement, this fitting is sourced and manufactured to the same specifications as the original, ensuring a proper connection within the heater's fuel or fluid line system. Compatible across multiple HI 770 XHD and Arctic Bear XHD configurations — including the Arctic Bear HD Mobile Indirect Air Heater — this part covers a wide range of units in the field. When you need a verified, drop-in replacement for your Wacker Neuson indirect heater, part is the correct call.
Key Features
- OEM-Spec Thread and Bore Dimensions — Manufactured to exact internal diameter and thread pitch specifications, ensuring a leak-free seal within the heater's fluid or fuel line circuit.
- Direct Line Connection — Installs in place of the original fitting with no rework to existing line routing or connection points on the HI 770 XHD and Arctic Bear XHD heaters.
- Broad HI Series Fitment — Confirmed fitment across HI 770 XHD, Arctic Bear XHD, and Arctic Bear HD indirect-fired diesel air heater configurations.
- Fuel and Fluid System Integrity — A correctly seated nipple fitting maintains consistent flow and pressure through the heater circuit; a failed or damaged fitting can cause leaks, pressure loss, or heater shutdown in cold-weather operations.
- Fuel System Safety — In diesel heater applications, a properly torqued and sealed fitting is critical to preventing fuel seepage near ignition components — using the correct OEM part supports safe heater operation.
A nipple fitting is a short threaded connector used to join two sections of pipe, hose, or line within a fluid or fuel circuit. In an indirect-fired diesel air heater like the HI 770 XHD, these fittings are integral to maintaining sealed, pressurized flow through the fuel supply or coolant loop. When a nipple fitting corrodes, cracks, or strips its threads, it can introduce air into the fuel line or allow fuel seepage — either of which can interrupt heater operation or create a hazard in cold-environment job site use. Replacing a worn fitting promptly with a verified OEM part like the Wacker Neuson 5000168739 restores circuit integrity and keeps the heater running as intended.
Part Details
| Part Number | 5000168739 |
|---|---|
| Old Part Number | 0168739 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nipple Fitting |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 770 XHD Indirect Air Heater, Diesel, 2x12 | Arctic Bear XHD | 5000620676 |
| HI 770 XHD Indirect Air Heater, Diesel, 1x16 | HI770XHD | 5000620183, 5200003814, 5200004934, 5100049894 |
| HI770XHD Indirect Heater | Arctic Bear XHD NS | 5000620690 |
| Mobile Indirect Air Heater, Di esel | Arctic Bear HD | 5000620197 |
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.
