The Wacker Neuson Nipple is a genuine OEM component designed for the HI-series indirect-fired diesel air heaters and HDR-series direct-fired radiant heaters. This OEM part is sourced directly through Wacker Neuson's authorized supply chain, ensuring it meets the exact specifications of the original component installed at the factory. Fitment covers a wide range of HI and HDR heater models, including the HI 110D, HI 110HD D, HI 200D, HI 200HD D, HI 300D, HI 300HD D, HI 400HD D, HI 90, HI 90HD, HI 120, HI 120HD, HI 35, HD 70, HDR 115, and HDR 155. When a fuel or fluid nipple fails or begins to leak, replacing it promptly with the correct OEM part keeps your heating equipment running safely and efficiently on the jobsite.
Key Features
- Genuine OEM Construction — Manufactured to Wacker Neuson's exact dimensional and material standards for fuel and fluid line connections in diesel and direct-fired heater applications.
- Exact-Thread, Drop-In Replacement — Matches the original nipple's thread form and seating geometry, allowing a straightforward swap without chasing threads or sourcing adapters.
- Broad HI and HDR Series Coverage — Verified fit across the HI 35 through HI 400HD D indirect heater range and the HDR 115 and HDR 155 direct-fired radiant heater models.
- Leak-Free Fuel and Fluid Delivery — A correctly seated nipple maintains pressure integrity in the heater's fuel supply circuit, supporting consistent ignition and steady heat output in cold-weather operations.
- Fuel System Integrity — On diesel-fired heating equipment, a damaged or corroded nipple can introduce air into the fuel line or allow fuel seepage; replacing with this OEM part restores a sealed, code-compliant fuel connection.
A nipple is a short threaded fitting used to join sections of pipe, hose, or tubing within a machine's fuel, fluid, or air circuit. In Wacker Neuson HI-series indirect air heaters and HDR-series radiant heaters, the nipple forms a critical connection point in the fuel delivery or combustion air pathway, ensuring that diesel fuel or combustion gases move through the system without leakage or pressure loss. When a nipple cracks, corrodes, or strips its threads, the result can be fuel weeping, air ingestion into the fuel line, or combustion irregularity — all of which reduce heating efficiency and can create a safety hazard in an enclosed or temporary-heat application. Replacing the worn fitting with part number 5000183945 restores a clean, sealed connection and returns the heater to full operational condition.
Part Details
| Part Number | 5000183945 |
|---|---|
| Old Part Number | 0183945 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nipple |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
| HI 110HD D Indirect Air Heater, Diesel | HI110HD D | 5000620864 |
| HI 200 D Indirect Air Heater | HI200D | 5000620865, 5200011877 |
| HI 110D, HEATER-INDIRECT, DIESEL, -20° | HI110D | 5000620915 |
| HI 200HD D Indirect Air Heater | HI200HDD | 5000620916, 5200011878 |
| HDR 155 Direct Fired Radiant Heater | HDR155 | 5200007530 |
| HDR 115 Direct Fired Radiant Heater | HDR115 | 5100018592 |
| HD 70 | HD70 | 5200019336 |
| HI35 | HI35 | 5200019337 |
| HI 90 | HI90 | 5200019340 |
| HI 90HD | HI90HD | 5200019341 |
| HI 120 | HI120 | 5200019342 |
| HI 120HD | HI120HD | 5200019343 |
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.
