The Wacker Neuson Plug is a genuine OEM component designed for the HI and HDR series indirect and direct-fired air heaters, including the HI 110D, HI 200D, HI 300D, HI 400HD G, HI 110HD D, HI 200HD D, HI 300HD D, HI 400HD D, HI 35, HI 90, HI 90HD, HI 120, HI 120HD, HDR 45, HDR 115, HDR 155, HD 50, HD 70, and MC5200 Mobile Drying Systems. As a genuine Wacker Neuson OEM part, the is manufactured to the same standards as the original, ensuring a direct, trouble-free installation into any compatible unit. This plug seals a designated port or passage within the heater assembly, maintaining correct pressure, fluid containment, or airflow routing depending on its location in the system. Keeping this small but critical component in good condition helps protect the heater's internal components and supports consistent, safe operation across demanding jobsite conditions.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to exact Wacker Neuson specifications, ensuring the plug maintains a secure, leak-free seal within the heater assembly without the risk of dimensional mismatch.
- Direct Drop-In Installation — Matches the original thread form, diameter, and seating profile for straightforward installation with no reworking of the port or surrounding hardware.
- Broad HI and HDR Series Coverage — Compatible with a wide range of Wacker Neuson indirect and direct-fired air heaters, including HI 110D through HI 400HD G and HDR 45 through HDR 155, as well as HD and MC5200 units.
- Protects Heater System Performance — A correctly seated plug prevents unwanted fluid or pressure loss at the plugged port, allowing the heater to maintain proper operating parameters and deliver rated heat output.
- Fuel and Fluid System Compliance — Used in heater assemblies that handle diesel fuel or pressurized fluid circuits, making correct material grade and thread integrity essential for safe, code-compliant operation.
A plug in a heater assembly seals off an unused or service port within the fuel, fluid, or pneumatic circuit — preventing leaks, maintaining system pressure, and keeping contaminants out of sensitive internal passages. In diesel-fired indirect air heaters like the HI and HDR series, these ports are subject to heat cycling and vibration, which can cause a worn or improperly fitted plug to weep fuel or lose pressure over time. Replacing a damaged plug promptly with the correct OEM part, such as the Wacker Neuson 5000183973, restores the integrity of the circuit and prevents more serious downstream damage to the heater's fuel delivery or combustion components.
Part Details
| Part Number | 5000183973 |
|---|---|
| Old Part Number | 0183973 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Drying System | MC5200 | 5000620201, 5000620232 |
| HI 400HD G Indirect Air Heater | HI400HD G | 5000620701 |
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
| HI 110HD D Indirect Air Heater, Diesel | HI110HD D | 5000620864 |
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
| HI 110D, HEATER-INDIRECT, DIESEL, -20° | HI110D | 5000620915 |
| HI 200 D Indirect Air Heater | HI200D | 5000620865, 5200011877 |
| 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 |
| HDR 45 | HDR45 | 5200013800 |
| HD 50 | HD50 | 5200019335 |
| 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.
