The Wacker Neuson is a genuine OEM Tandem Hydraulic Axle designed for HI750 and HI900 series indirect-fired air heaters, including the HI750GM, HI750GMHD, HI750G, HI900DGM, and related mobile indirect heater configurations. As a factory-sourced component, the is manufactured to the exact tolerances and load ratings specified for these trailer-mounted heater units. This axle is the correct direct-replacement part for surge brake and standard mobile variants across both the HI750 and HI900 families.
Key Features
- Genuine OEM Load Rating: — Engineered to the axle load capacity and tandem geometry specified for HI750 and HI900 trailer-mounted heater frames — not a generic axle adaptation.
- Drop-In Replacement: — Matches the original mounting points and hub configuration on HI750GM, HI750GMHD, HI750G, HI900DGM, and surge-brake-equipped variants for a straightforward swap.
- Broad HI-Series Compatibility: — Verified fitment across HI750 and HI900 indirect heater families, including standard, DGM, surge, and mobile heavy-duty configurations.
- Structural Integrity for Mobile Deployment: — A sound tandem axle keeps the heater unit tracking correctly under tow; a worn or damaged axle creates trailer instability and uneven tire loading.
- Surge Brake System Compatibility: — Designed to work alongside surge brake-equipped trailer configurations on HI750GMHD and HI900DGM models, maintaining proper braking geometry.
The tandem hydraulic axle is the structural and mobility foundation of trailer-mounted indirect-fired heaters like the HI750 and HI900 series. It bears the full weight of the heater unit during transport and provides the stable rolling platform needed for safe towing across worksites and public roads. On surge brake-equipped models, the axle geometry also plays a direct role in how the brake actuator responds under deceleration — meaning a damaged or out-of-spec axle can compromise not just ride quality but braking performance. When this component is worn, bent, or compromised, safe and legal transport of the heater unit is no longer possible, making prompt replacement with the correct OEM part essential.
Part Details
| Part Number | 5000186730 |
|---|---|
| Old Part Number | 0186730 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Tandem Hydraulic Axle |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI750 DGM,SB HEATER-INDIRECT | HI750GM | 5000620930 |
| HI 750GM HD-Mobile Indirect Ai r Heater-Surge, -40 | HI750GMHD | 5000620969 |
| HI750G HEATER-INDIRECT | HI750G | 5000620857 |
| Factory-Installed Options | Factory-Installed Options | 5200004152 |
| HI900 Heater-DGM,Srg,-40 | HI900DGM | 5200014221, 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.
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