The Multiquip 8972089080 is a genuine OEM Injection Pump Assembly DCA45USI 4JG1 designed for the DCA45USI ultra-silent diesel generator. As a direct OEM replacement, this assembly is built to the exact tolerances required by the Isuzu 4JG1 engine, ensuring the fuel delivery characteristics your generator depends on are fully restored. Sourced directly through Multiquip's authorized parts network, this is the same assembly installed at the factory — not an approximation. Confirm your model code is DCA45USI before ordering to ensure correct fitment.
Key Features
- OEM-Grade Fuel Metering Precision — Manufactured to the exact injection timing and delivery volume specifications of the Isuzu 4JG1 engine, maintaining proper combustion efficiency and power output.
- Direct-Fit Assembly for DCA45USI — Engineered as a bolt-on replacement for the DCA45USI ultra-silent generator; mounting points, fittings, and plumbing connections align with the original installation.
- Confirmed Fitment: DCA45USI — Verified compatibility with the Multiquip DCA45USI ultra-silent diesel generator powered by the Isuzu 4JG1 engine.
- Restored Engine Performance — A worn or failing injection pump causes hard starting, rough idle, power loss, and excessive smoke; replacing it with 8972089080 brings fuel delivery back to correct operating spec.
- Fuel System Integrity — Proper injection pump function is critical to safe, stable generator output; using a correctly spec'd OEM assembly reduces the risk of fuel system irregularities that can affect connected equipment.
The injection pump is the heart of the diesel fuel system — it pressurizes and meters fuel, delivering precisely timed injections to each cylinder of the Isuzu 4JG1 engine. When the pump wears or fails, the engine can no longer maintain the correct air-fuel ratio, leading to reduced power, increased fuel consumption, hard starting, and visible exhaust smoke. Replacing the pump assembly with the correct OEM unit restores accurate fuel delivery, smooth engine operation, and dependable generator output under load.
For questions about fitment or to confirm this part is correct for your DCA45USI generator, contact the DHS Equipment team before ordering.
Part Details
| Part Number | 8972089080 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Injection Pump Assembly DCA45USI 4JG1 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA45USI |
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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