The Wacker Neuson Adapter is a genuine OEM component designed for the HI 300HD D and HI 300D indirect-fired diesel air heaters. Sourced directly from Wacker Neuson, this adapter carries the same part number and specification as the original, ensuring a true fit within your heater assembly. It is compatible with both the HI 300HD D and the HI 300D, including cold-weather configurations rated to -20°F.
Key Features
- Genuine OEM Construction — Manufactured to Wacker Neuson's original specification, with the correct dimensions and material grade required for consistent sealing and connection performance in a diesel-fired heating system.
- Direct-Fit Connection — Matches the original mounting interface exactly, allowing straightforward installation without rework or fitting modification on compatible HI-series heater assemblies.
- Confirmed Fitment — Verified for the HI 300HD D indirect diesel air heater and the HI 300D indirect diesel air heater, including -20° cold-weather rated variants.
- Sustained Heating Output — A correctly fitted adapter maintains the integrity of the air or fuel pathway it connects, supporting full heat output and preventing pressure loss or combustion disruption during extended operation.
- Fuel System Integrity — In diesel heater applications, a properly seated adapter helps maintain leak-free connections in the fuel or airflow circuit — a critical consideration for safe, compliant operation in enclosed or semi-enclosed worksites.
In an indirect-fired diesel air heater, adapters serve as transition fittings that connect discrete sections of the fuel, air, or exhaust circuit within the unit. A correctly sized and seated adapter maintains the pressure and flow characteristics the heater relies on for efficient combustion and consistent heat delivery. When an adapter is worn, cracked, or incorrectly sized, it can introduce air leaks or fuel pathway disruptions that reduce output, cause hard starts, or compromise safe operation in cold-weather jobsite environments.
Part Details
| Part Number | 5000186765 |
|---|---|
| Old Part Number | 0186765 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Adapter |
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.
