The Multiquip 8941678820 Oil Cooler Valve DCA-45USJ 4JG1 is a genuine OEM component designed for the DCA-45USJ ultra-silent diesel generator. Sourced directly from Multiquip, this part meets the exact specifications required by the DCA-45USJ platform and its Isuzu 4JG1 engine. Verified fitment for the DCA-45USJ means no guesswork — this is the correct valve straight out of the box. DHS Equipment stocks genuine Multiquip OEM parts so you can get your generator back online fast.
Key Features
- Genuine OEM Oil System Integrity — Manufactured to the exact material and flow specifications of the original 4JG1 engine oil cooling circuit, ensuring consistent thermal regulation under load.
- Direct-Fit for DCA-45USJ — Engineered as a drop-in replacement for the DCA-45USJ ultra-silent generator series, connecting directly to the existing oil cooler assembly without modification.
- Confirmed Fitment — Specifically validated for the DCA-45USJ equipped with the Isuzu 4JG1 engine; use part number 8941678820 to confirm your application before ordering.
- Protects Engine from Thermal Stress — A correctly functioning oil cooler valve maintains proper oil temperature range, preventing heat-related wear on internal engine components during extended generator operation.
- Fuel and Oil System Safety — As a valve governing oil flow through the cooling circuit, correct seating and operation is critical to preventing oil bypass conditions that can lead to overheating or engine damage.
The oil cooler valve controls the flow of engine oil through the oil cooler, regulating oil temperature to keep it within a safe operating range. On diesel generators like the DCA-45USJ, which are often run for extended periods under continuous load, maintaining correct oil temperature is essential to protecting engine bearings, seals, and other internal components. When this valve sticks, leaks, or fails to open and close at the correct threshold, oil can overheat or bypass the cooler entirely — accelerating engine wear and risking unplanned shutdown.
For questions about fitment or to confirm this part is correct for your machine, contact the DHS Equipment parts team before ordering.
Part Details
| Part Number | 8941678820 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Oil Cooler Valve 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.
