The Wacker Neuson Pump Injection Assembly is a genuine OEM component designed for the HIF 690 Flameless Air Heater series, including Kubota engine-equipped models. As a direct OEM replacement sourced from Wacker Neuson, this assembly is built to the exact specifications of the original part — ensuring it seats, connects, and performs identically to what came off the production line. If your HIF 690 heater is running rough, losing heat output, or failing to start reliably, the injection pump assembly is one of the first fuel system components to inspect and replace. Keeping this assembly in proper working order is essential to maintaining consistent, safe heat delivery on the jobsite.
Key Features
- OEM Fuel Metering Accuracy — Genuine Wacker Neuson part calibrated to deliver precise fuel injection volumes, preserving combustion efficiency and heat output in the HIF 690.
- Direct-Fit Replacement — Engineered to match the original mounting interface and fuel line connections on HIF 690 heaters, dropping in without fabrication or adaptation.
- HIF 690 Series Compatibility — Confirmed fitment for HIF 690 Flameless Air Heater models, including both standard and Kubota engine configurations.
- Restored Ignition and Burn Reliability — A worn or failing injection pump can cause hard starts, inconsistent burner operation, and unburned fuel buildup; this assembly restores proper cycle performance.
- Fuel System Safety — A correctly functioning injection assembly maintains proper fuel pressure and delivery timing, reducing the risk of fuel pooling or incomplete combustion in enclosed heating applications.
The injection pump assembly is responsible for drawing fuel from the tank and delivering it at the correct pressure and volume to the burner system of the flameless heater. In indirect or flameless heating equipment like the HIF 690, precise fuel metering is critical — too little fuel results in weak or failed ignition, while too much can cause unsafe combustion conditions or sooting. When this assembly wears or fails, operators typically see hard starts, fluctuating heat output, or burner shutdowns; replacing it restores the consistent, controlled fuel delivery the system depends on.
Part Details
| Part Number | 5100028263 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pump Injection Assembly |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HIF 690 Flameless Air Heater | HIF690 | 5100017599, 5200021915 |
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.
