The Wacker Neuson Fuel Pump Service Kit is a genuine OEM kit designed for the HI 400HD D Indirect Air Heater. Sourced directly from Wacker Neuson, this kit delivers the correct components to restore fuel pump operation to original specification on your HI 400HD D heater. Genuine OEM designation means every piece in the kit is manufactured to the same standards as the original equipment — no substitutions, no guesswork. If your HI 400HD D is showing signs of fuel delivery issues, this is the correct service solution to restore full heating output.
Key Features
- OEM-Grade Fuel System Integrity — Each component in this kit meets the original material and tolerance requirements for fuel pump assemblies, ensuring consistent fuel delivery and no compatibility-related seal failures.
- Complete Service Solution — Includes the necessary components to fully service the fuel pump in a single kit, allowing a thorough repair without sourcing individual parts separately.
- Direct-Fit for HI 400HD D — Engineered specifically for the HI 400HD D Indirect Air Heater; components align with existing mounting points and fuel line connections without adaptation.
- Restores Full Heating Output — A worn or failing fuel pump starves the burner of consistent fuel flow, causing weak heat output or heater lockout; this kit returns the pump to proper operating condition.
- Fuel System Safety Compliance — Using a genuine OEM service kit on a combustion heater's fuel pump ensures correct sealing and flow rates, reducing the risk of fuel leaks in a live flame environment.
- Verified Part Number — Part number 5100055563 is confirmed for the HI 400HD D, giving you confidence that you are installing the right components the first time.
The fuel pump in an indirect air heater is responsible for drawing diesel fuel from the tank and delivering it at the correct pressure to the burner assembly. Consistent, regulated fuel flow is essential for clean ignition and steady heat output — without it, the heater may fail to start, cycle erratically, or shut down on a fault code. Over time, internal pump components such as seals, diaphragms, and valves wear and degrade, reducing fuel pressure and disrupting burner performance; a service kit allows these wear components to be replaced as a complete set, restoring the pump to its original operating condition.
Part Details
| Part Number | 5100055563 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fuel Pump Service Kit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
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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