The Multiquip 1600651010 Injection Pump Assembly D722/850 is a genuine OEM component designed for the DLW300ES, DLW300ESA, and DLW300ESA1 diesel light welder series. Sourced directly through Multiquip's authorized parts channel, this assembly carries the same specification as the unit installed at the factory, ensuring a direct, correct-fit replacement for the D722/850 diesel engine fuel injection system. If your DLW300ES welder is showing signs of hard starting, uneven power output, or poor fuel delivery, this is the assembly you need to restore full operation.
Key Features
- Genuine OEM Fuel Metering Accuracy — Manufactured to the exact injection timing and delivery volume specification for the D722/850 engine, preserving consistent fuel atomization and combustion performance.
- Direct-Fit Assembly — Mounts to the D722/850 engine block using the original bolt pattern and port configuration, so installation follows the standard service procedure without rework.
- DLW300ES Series Compatibility — Confirmed fitment for DLW300ES, DLW300ESA, and DLW300ESA1 Multiquip diesel light welders equipped with the D722/850 engine.
- Restores Full Engine Output — A worn or failing injection pump causes fuel starvation, rough idle, and loss of welding arc stability; replacing it with this assembly brings fuel delivery back to spec and restores steady power.
- Fuel System Safety — A correctly functioning injection pump maintains proper injection pressure, preventing raw fuel blowback and reducing the risk of fuel system faults during operation.
The injection pump assembly is the heart of the diesel fuel system on the D722/850 engine. It pressurizes and meters fuel, delivering precisely timed injections to each cylinder to drive combustion. When the pump wears or fails, fuel delivery becomes inconsistent, leading to hard starts, rough running, reduced power output, and in severe cases, complete engine shutdown. Replacing the pump assembly with the correct OEM unit restores proper injection pressure and timing, bringing the engine back to its rated performance and keeping the welder producing stable output on the job.
For fitment questions or to confirm this part is correct for your machine, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 1600651010 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Injection Pump Assembly D722/850 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Welders | DLW300ES |
| Welders | DLW300ESA |
| Welders | DLW300ESA1 |
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.
