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Cummins 5548739 is the wastegated turbocharger with the actuator and boost hose fitted, a twin entry exhaust inlet flange and an aluminium compressor housing. It is used on Cummins QSL9 and ISLe engines. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
The same part is also sold as Cummins 5358305.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Turbocharger |
| Replaces | Cummins 5548739 |
| Engine | Cummins QSL9, ISLe |
| Wastegate | Yes, actuator and hose fitted |
| Cross references | Cummins 5358305 |
| Fits | the Cummins QSL9 and ISLe diesel engines |
| Condition | New, aftermarket |
| Stat. HS-Code | 841480 |
| Country of Manufacture | China |
Machines
Check the part number on your old unit before ordering.
| Cummins Part No.(SPM Part No.) | Fits |
|---|---|
| 5548739 / Cummins 5358305(SPM-HEP-4911) | the Cummins QSL9 and ISLe diesel engines |
| Brand | Part No. |
|---|---|
| Cummins | 5548739 (this page, SPM-HEP-4911) |
| Cummins | 5358305 |
All of these numbers are the same part.
What it does
Exhaust gas spins the turbine, which drives the compressor wheel on the same shaft and pushes more air into the engine. More air lets the engine burn more fuel cleanly, giving the rated power.
Where it is used
Made for the Cummins QSL9 and ISLe diesel engines. The full list is in the tables above.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| SINOCMP | USD 699.00 | 1 Nov 2026 |
| eBay (5 aftermarket sellers) | USD 719.99 to 839.72 | 1 Nov 2026 |
| Spare Part Mart | USD 559.20 | Today |
Our price of USD 559.20 is 20% to 33% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Yes, it was made for the Cummins QSL9, and 1 more listed under compatible equipment. Check the old turbocharger is marked 5548739 or one of the cross references, because makers change parts between serial ranges.
On the Cummins QSL9, often as long as the engine, 8,000 hours or more, when the oil and air filters are kept on schedule. Most turbos fail early from oil or dirt problems, not age.
Blue or black smoke, a whistle or siren noise, loss of power, oil in the intake or exhaust, or the shaft rubbing the housing.
Most failures come from oil starvation, dirty oil, or something passing through the wheels. Find the cause first: a blocked oil feed or dirty air path will kill the new turbocharger too.
Yes. Fit new oil and a new filter, and replace the oil feed and drain gaskets. Make sure the drain line is clear and runs downhill.
No. It is an aftermarket turbocharger made to replace the Cummins 5548739. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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