The Wacker Neuson Plug is a genuine OEM component designed for the CUB200, CUB300, CUB400, and CUB700 series indirect fired air heaters, as well as the HI110D, HI110HDD, HI200D, HI200HDD, HI300D, and HI300HDD indirect air heater models. As a factory-sourced part, the meets the exact material and dimensional specifications set during original equipment production, ensuring a direct fit with no guesswork on installation. This plug is compatible across a broad range of Wacker Neuson indirect air heater configurations, including portable, skid-mounted, and mobile units running on diesel, natural gas, or LP fuel. When your heater is down on a cold-weather jobsite, sourcing the correct OEM plug by part number gets you back to full heating output fast.
Key Features
- Genuine OEM Sealing Integrity — Factory-sourced plug material is rated to withstand the thermal cycling and pressure conditions specific to indirect fired air heater systems, ensuring a secure, leak-free seal over repeated use.
- Direct-Fit Installation — Engineered to the original port dimensions and thread spec, this plug seats correctly first time without modification or adapters.
- Broad Model Coverage — Compatible with CUB200, CUB300, CUB400, CUB700, HI110D, HI110HDD, HI200D, HI200HDD, HI300D, and HI300HDD series indirect air heaters — including portable, skid-mounted, mobile, and genset-equipped configurations.
- Heating System Continuity — A properly seated plug maintains correct fluid or air circuit pressure within the heater system; a failed or missing plug can cause pressure loss, fluid leaks, or combustion inefficiency that shuts down heat output entirely.
- Fuel System Safety Relevance — On diesel, NG, and LP-fueled heaters, a compromised plug in a fuel or combustion circuit poses a fire and carbon monoxide risk. Using the correct OEM-spec plug is a straightforward safeguard for operators working in enclosed or semi-enclosed spaces.
A plug in an indirect fired air heater serves as a closure component — sealing off ports, passages, or fluid circuits that are not in active use or that require pressure containment during operation. In heater systems that cycle between high and low temperatures in demanding outdoor environments, plugs must maintain their seal under thermal expansion and contraction. When a plug fails, cracks, or is improperly seated, it can allow fuel, combustion gases, or hydraulic fluid to escape — reducing heater efficiency, triggering shutdown faults, or creating a hazardous condition for operators nearby.
Part Details
| Part Number | 5000170389 |
|---|---|
| Old Part Number | 0170389 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Skid Mounted-Indirect Fired Ai r Heater, NG/LP | CUB700 | 5000620208, 5000620213, 5000620687, 5000620207 |
| Skid Mounted-Indirect Fired Ai r Heater, NG/LP | CUB400 | 5000620206, 5000620211, 5000620212, 5000620615 |
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| 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 |
| Mobile Indirect Fired Air Heat er, Diesel w/Genset | CUB700GM | 5000620759 |
| Mobile Indirect Fired Air Heat er, Diesel | CUB700M | 5000620758 |
| Accessories | Accessories | 5100024710 |
| HI 200D Indirect Air Heater | HI200D | 5200011877 |
| HI 200HD D Indirect Air Heater, Diesel | HI200HDD | 5200011878 |
| Portable Indirect Air Heater-D iesel w/37 Gal Tank | CUB300 | 5000620233 |
| Portable Indirect Air Heater, Diesel | CUB200 | 5000620204, 5000620262 |
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.
