The Wacker Neuson is a genuine OEM O-Ring designed for the HI750GM, HI900DGM, and CUB700GM series indirect-fired air heaters. As a factory-sourced component, it is manufactured to the exact material and dimensional specifications required by Wacker Neuson for these diesel-fired heating units. This O-Ring is a direct-fit replacement — no trimming, modification, or adaptation needed to seat it correctly in the assembly. Confirmed fitment spans multiple HI750GM and HI900DGM configurations, including surge brake, mobile, and cold-weather variants, as well as the CUB700GM diesel genset heater.
Key Features
- OEM Material Specification — Manufactured to Wacker Neuson's exact compound and durometer rating, ensuring the correct compression and sealing performance in a high-temperature, diesel-fuel-exposed environment.
- Drop-In Fitment — Matches the original groove dimensions precisely, seating cleanly without reworking the mating surfaces or housing.
- Broad HI-Series Compatibility — Fits HI750GM, HI750GM HD, HI900DGM, and CUB700GM configurations, covering standard, surge brake, mobile, and extreme cold-weather (-40°) variants.
- Fuel and Fluid Seal Integrity — A correctly seated O-Ring maintains the pressure boundary within the heater's fuel or fluid circuit; a failed or degraded O-Ring leads to leaks, pressure loss, and unreliable heat output on the jobsite.
- Fuel System Safety — On diesel-fired heating equipment, maintaining a leak-free fuel circuit is essential to safe operation; using a correctly rated OEM O-Ring supports the integrity of that seal over repeated heat cycles.
An O-Ring creates a static or dynamic pressure seal between two mating components in a fuel, fluid, or air circuit. In indirect-fired diesel air heaters like the HI750GM and HI900DGM series, O-Rings are critical to maintaining leak-free connections within the fuel delivery and fluid handling systems that keep the burner operating efficiently and safely. When an O-Ring hardens, cracks, or loses its compression set — whether from heat cycling, chemical exposure, or age — it can allow fuel or fluid to bypass the seal, resulting in leaks, inconsistent burner performance, or a complete shutdown of the heating unit.
Part Details
| Part Number | 5000182019 |
|---|---|
| Old Part Number | 0182019 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
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.
