The Wacker Neuson Upper Cover is a genuine OEM component designed for the HI 300HD D and HI 300D indirect-fired diesel air heaters. As a direct factory replacement, this cover installs exactly as the original, maintaining the structural and thermal integrity of the heater housing. It is the correct part for both the HI 300HD D and HI 300D diesel heater configurations, so you can order with confidence knowing fitment is confirmed.
Key Features
- Genuine OEM Construction: — Manufactured to the same tolerances and material specifications as the original, ensuring the cover seats flush and seals the heater housing correctly against heat and combustion byproducts.
- Direct-Fit Replacement: — Engineered as a drop-in replacement for the original upper cover, aligning with existing mounting points on the HI 300HD D and HI 300D heater chassis without modification.
- Confirmed Diesel Heater Fitment: — Verified compatible with the HI 300HD D Indirect Air Heater (Diesel) and the HI 300D Indirect Air Heater (Diesel, -20°F rated) model lines.
- Structural Housing Integrity: — A damaged or missing upper cover exposes internal combustion and heat exchanger components to physical damage and contamination, compromising heater output and longevity.
- Operational Safety for Fuel-Burning Equipment: — On indirect-fired heaters, proper housing enclosure is critical to containing combustion gases and directing clean heated air safely — making cover condition a genuine safety consideration.
The upper cover on an indirect-fired diesel air heater forms the top section of the outer housing, enclosing the burner assembly and heat exchanger inside the unit. It protects internal components from physical damage, weather, and debris while helping channel airflow correctly through the machine. When the upper cover is cracked, warped, or missing, the heater's thermal efficiency drops and internal components become vulnerable to damage that can take the entire unit out of service.
Part Details
| Part Number | 5000186741 |
|---|---|
| Old Part Number | 0186741 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Upper Cover |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
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.
