The Wacker Neuson Plug is a genuine OEM component designed for CUB400, CUB700, and CUB700M series indirect fired air heaters. As a direct OEM replacement, this plug is sourced from Wacker Neuson and manufactured to the same specification as the original part installed at the factory. Fitment covers a broad range of CUB-series configurations including skid mounted, portable, and mobile units running on natural gas, LP, and diesel fuel. Verify your model number before ordering to confirm compatibility with your specific heater configuration.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to original specification, ensuring the plug maintains a proper pressure-tight seal within the heater's fuel or fluid circuit — critical in combustion-adjacent applications.
- Direct Drop-In Replacement — Engineered to match the original port thread form and dimensions, allowing straightforward installation without rework or adaptation.
- Broad CUB-Series Compatibility — Fits CUB400, CUB700, and CUB700M indirect fired air heaters across skid mounted, portable, and mobile configurations in NG/LP and diesel variants.
- Supports Continuous Heat Output — A correctly seated plug keeps the heater's internal circuits sealed and pressurized; a damaged or missing plug can cause fluid loss, pressure drop, and heater shutdown on the job.
- Fuel System Safety — In heater applications, a properly installed plug prevents unintended fuel or combustion gas escape, supporting safe heater operation in enclosed or semi-enclosed work environments.
A plug in an indirect fired air heater serves as a sealing fastener that closes off an unused port, access point, or service opening within the unit's fuel delivery, fluid, or combustion circuit. It keeps internal pressure contained and prevents contaminants from entering the system. When a plug is cracked, stripped, or missing, the heater may lose system pressure, leak fuel or fluid, or fail to ignite and sustain a burner flame — all of which interrupt heat delivery and can create a safety hazard on site.
Part Details
| Part Number | 5000172559 |
|---|---|
| Old Part Number | 0172559 |
| 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 |
| Mobile Indirect Fired Air Heat er, Diesel | CUB700M | 5000620758 |
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.
