The Multiquip 8973186512 is a genuine OEM Turbocharger Assembly DCA-45USJ 4JG1 designed for the DCA-45USJ ultra-silent diesel generator. As a direct OEM replacement sourced through Multiquip's authorized parts program, this assembly is built to the same specification as the original unit installed at the factory. It is confirmed to fit the DCA-45USJ, ensuring proper integration with the 4JG1 engine platform without guesswork or adaptation. Order with confidence knowing you are installing an authentic Multiquip component backed by OEM engineering.
Key Features
- Genuine OEM Turbocharger Engineering — Manufactured to the same boost pressure and turbine housing tolerances as the original 4JG1-spec unit, ensuring the engine breathes correctly under load.
- Direct-Fit for DCA-45USJ — Matches the original mounting configuration, oil feed connections, and exhaust flange interface on the DCA-45USJ, so installation follows the same procedure as the factory unit.
- Confirmed DCA-45USJ Fitment — Verified for the DCA-45USJ ultra-silent generator series; always cross-reference part number 8973186512 with your serial tag before ordering.
- Restores Full Generator Output — A correctly functioning turbocharger maintains the combustion efficiency the 4JG1 engine needs to deliver rated generator output; a worn or failed unit causes power loss, black smoke, and elevated fuel consumption.
- Fuel System and Emissions Integrity — Replacing a degraded turbocharger with a genuine OEM assembly helps maintain proper air-fuel ratios, supporting clean combustion and correct exhaust output on a regulated generator platform.
The turbocharger assembly uses exhaust gas energy to spin a turbine that drives a compressor, forcing more air into the engine's intake than atmospheric pressure alone would allow. This increased air density lets the 4JG1 diesel engine burn more fuel per cycle, producing greater power output from a compact displacement — critical for a generator that must maintain stable voltage and frequency under variable electrical loads. When the turbocharger wears or fails, the engine suffers from reduced air supply, leading to loss of power, excessive smoke, overheating, and the inability to sustain rated generator output.
Part Details
| Part Number | 8973186512 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Turbocharger Assembly DCA-45USJ 4JG1 |
Compatibility & Fitment
| Name | Model |
|---|---|
| DCA-45USJ | DCA-45USJ |
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.
