The Multiquip EE45763 Radiator Aftercooler Cummins QST30-G5 is a genuine OEM cooling assembly designed for the QST30-G5 generator. This direct-replacement unit restores the full two-stage cooling capability of the engine, covering both the primary radiator function and the charge air cooling function in a single matched assembly. Sourced directly from Multiquip, the part is built to the same specifications as the original component fitted at the factory, ensuring correct fitment on QST30-G5 equipped units. If your generator is running hot or losing power due to a compromised cooling or aftercooler core, this is the assembly that brings it back to spec.
Key Features
- Genuine OEM Cooling Assembly — Manufactured to Multiquip's original design specifications, with correctly rated core density and tank capacity for the QST30-G5 Cummins engine's thermal demands.
- Integrated Radiator and Aftercooler Construction — Combines the primary engine cooling radiator and the charge air aftercooler in one assembly, matching the original dual-core layout for a straightforward drop-in installation.
- Confirmed Fitment for QST30-G5 — Validated for the Multiquip QST30-G5 generator, eliminating the guesswork of cross-referencing third-party cooling cores against engine-specific clearances and port configurations.
- Protects Engine Performance Under Load — A fully functional aftercooler lowers intake charge temperature, maintaining proper air density for combustion. A degraded unit causes power loss, elevated exhaust temps, and accelerated engine wear under generator load.
- Critical for Generator Uptime — Cooling system failures on standby and prime-power generators can result in unplanned thermal shutdowns. Replacing a damaged core with a genuine OEM unit restores the thermal margin the engine needs to run continuous duty cycles.
The radiator in this assembly transfers heat from the engine coolant to the surrounding air, keeping the Cummins QST30-G5 within its safe operating temperature range. The aftercooler — also called a charge air cooler — cools the compressed intake air after it leaves the turbocharger before it enters the engine cylinders. Cooler, denser intake air allows the engine to burn fuel more efficiently and produce its rated power output. When either core is damaged, leaking, or blocked, the engine runs hotter than designed, power output drops, and the risk of a thermal shutdown or long-term internal damage increases significantly.
For fitment questions or to confirm this part is correct for your specific unit, contact the DHS Equipment team before ordering.
Part Details
| Part Number | EE45763 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Radiator Aftercooler Cummins QST30-G5 |
Compatibility & Fitment
| Name | Model |
|---|---|
| QST30-G5 | QST30-G5 |
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.
