Cummins ISM Turbocharger, Remanufactured, 4955462RX

Turbocharger for Cummins ISM Diesel Engines, Part Number: 4955462RX

Why Choose Our Remanufactured Turbocharger for the Cummins ISM?

• Rebuilt genuine Holset turbocharger, not a generic aftermarket copy
• Manufactured in an ISO 9001:2015 certified facility for quality and consistency
• Direct fit replacement engineered for a perfect bolt-on installation

Restore Boost and Power to Your Cummins ISM Diesel Engine

4BTdiesel’s remanufactured turbocharger for the Cummins ISM (part number 4955462RX) is built to bring back the boost, power, and fuel efficiency your engine had when it left the factory. This rebuilt Holset turbocharger is engineered as a direct replacement for the OEM 4955462 turbocharger, giving your ISM a perfect fit with no custom fabrication needed.

Is your Cummins ISM blowing smoke, feeling sluggish under load, or struggling to hold boost? A worn turbocharger is one of the most common reasons an ISM engine loses performance. Bearing wear, shaft play, and a worn compressor or turbine wheel all rob your engine of the airflow it needs to run clean and strong. Once boost pressure drops, fuel economy drops right along with it, leaving you burning more diesel to move the same load.

Replacing a full turbocharger through the dealer can be a serious expense, especially on an ISM. 4BTdiesel gives you a better option with the 4955462RX turbocharger, a rebuilt Holset unit manufactured in an ISO 9001:2015 certified facility. That means every core that comes through our process is rebuilt to a consistent, documented standard rather than a quick clean and repackage job. You get OEM quality at a fraction of the OEM price.

Buying your 4955462RX turbocharger from 4BTdiesel means more than just getting a part shipped to your door. Our professionally certified factory mechanics are available to help confirm this turbo is the correct match for your specific Cummins ISM engine before you place your order, since the CPL and engine serial number can affect fitment on turbocharger applications like this one.

This turbocharger does require a core return. You can pay a refundable core charge for immediate shipping, or send your old core in first, which typically adds two to four weeks before your replacement ships. Paying the core charge is the faster way to get your ISM back on the road.

With deep technical know-how, carefully tested quality goods, fast shipment and responsive customer service, 4Btdiesel stands out.

Looking for other engine parts for your ISM? Browse our full line of Cummins Diesel Engine Parts or shop Turbochargers for other engine models. Have a question about core returns? Visit our Shipping and Returns page for details.

FAQs About Cummins ISM Turbocharger, Remanufactured, 4955462RX

1. What engines is turbocharger 4955462RX compatible with?

This remanufactured turbocharger is built for Cummins ISM diesel engines, including applications under the 8557 CPL/ESN prefix. It is a direct replacement for the OEM 4955462 turbocharger, so it bolts on without modification.

2. Is this a new or remanufactured turbocharger?

This is a remanufactured turbocharger built around a genuine Holset core. It is rebuilt in an ISO 9001:2015 certified facility and tested for fit and function, giving you OEM level performance at a lower cost than a new unit.

3. What other part numbers cross reference to 4955462RX?

This turbo cross references to numbers including 4955462, 4955462NX, 4089378, 4089379, 4089600, 4044006, 4045934, 4035723, 4035725, 4035729, and 3599572. If your old turbo tag shows one of these numbers, this remanufactured unit is likely a match.

4. Do I need to send back my old turbocharger?

Yes, this part carries a core charge. You can pay a refundable core charge and receive your new turbo right away, or send your old core in first, which typically adds two to four weeks before your replacement ships.

5. What are common signs of a failing ISM turbocharger?

Watch for excessive exhaust smoke, a noticeable loss of power under load, whining or grinding noises, oil showing up in the intake piping, or a boost related fault code. Any of these can point to a turbocharger that needs replacement.

7. How long do I have to return my core for credit?

Cores must be returned within 45 days of delivery for full credit. Returns between 46 and 50 days receive 50 percent credit, and cores returned after 50 days do not qualify for credit.

8. What condition does my core need to be in?

Your core must be returned assembled and in rebuildable condition according to the manufacturer’s policy. Cores that do not match the part purchased or fail to meet rebuildable criteria will not receive credit unless approved in advance.

9. Can 4BTdiesel confirm this turbo fits my specific ISM?

Yes. Provide your engine serial number (ESN) and CPL when you order, and our professionally certified factory mechanics will verify fitment before your part ships.

10. How fast will my order ship?

If you choose to pay the core charge, in stock orders placed by 2pm EST typically ship the same day, Monday through Friday. Sending your core in advance instead adds two to four weeks to your ship date.

A pre-shipment test video is provided before dispatch.