The Wacker Neuson is a genuine OEM Thermostat Gasket designed for the HI750GM, CUB700GM, and HI900DGM series indirect-fired air heaters. As a factory-sourced component, it is manufactured to the exact material and dimensional tolerances of the original part, ensuring a proper seal at the thermostat housing every time. This gasket is confirmed to fit multiple HI-series configurations, including surge brake, mobile diesel with genset, and heavy-duty variants. When it's time to service the thermostat on your Wacker Neuson indirect heater, part number is the correct OEM replacement to reach for.
Key Features
- OEM-Grade Sealing Material — Manufactured from materials matched to the original thermostat gasket specification, providing the compression resistance and heat tolerance required in indirect-fired heater applications.
- Drop-In Thermostat Housing Fit — Seats directly against the thermostat housing on HI-series heaters with no trimming or reworking of the mating surfaces needed.
- Broad HI-Series Compatibility — Fits HI750GM, HI750GM HD Mobile, CUB700GM, and HI900DGM models across standard, surge brake, and electric configurations.
- Prevents Coolant and Heat Loss — A correctly sealed thermostat housing keeps the heating circuit operating at the right temperature range, maintaining consistent heat output in cold-weather jobsite conditions.
- Fuel System Integrity — A failed or compressed gasket at the thermostat housing can allow coolant migration or combustion-circuit leakage; replacing this gasket restores the sealed boundary that keeps the heater running safely.
The thermostat gasket forms a pressure-tight seal between the thermostat and its housing within the heater's engine cooling or heating circuit. It prevents coolant or heated fluid from bypassing the thermostat seat, which is critical for maintaining the correct operating temperature in a diesel indirect-fired air heater. When this gasket deteriorates, compresses unevenly, or fails, the result can be fluid seepage at the housing joint, erratic temperature regulation, or overheating — all of which impair the heater's ability to deliver reliable warmth in demanding cold-weather conditions.
Part Details
| Part Number | 5000182025 |
|---|---|
| Old Part Number | 0182025 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Thermostat Gasket |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI750 DGM HEATER-INDIRECT | HI750GM | 5000620859, 5000620930 |
| HI 750GM HD-Mobile Indirect Ai r Heater-Surge, -40 | HI750GMHD | 5000620969 |
| Mobile Indirect Fired Air Heat er, Diesel w/Genset | CUB700GM | 5000620759 |
| HI900 Heater-DGM,Srg,-40 | HI900DGM | 5200014221, 5200014222, 5200014165, 5200014166 |
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.
