
Cummins ISB 6.7L-300 Turbo Assembly 2023-2025: OEM 6320933
CUMMINS ISB 6.7L-300 TURBO ASSEMBLY 2023-2025: OEM 6320933

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx Turbo Assembly, Tamerx part number 6320933RM-WA ( OEM Part Number 6320933 ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a
Cummins ISB 6.7L-300, production years 2023-2025, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 6320933 |
| Additional OEM | 5601416, 5601491, 5603695, 6320933, 6320979, 6501706 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490538115 |
| WEIGHT | 55.00 LBS |
SHIPPING OPTIONS
Ship Weight : 55.00 LBS
UPS Ground, 2nd Day Air, Next Day Air
SHIPPING POLICY
Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.
The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.
Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.
Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".
If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.
As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.
What is a Core Charge?
A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.
30 Day Core Charge Hold
You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.
The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.
The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more.
You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation.
Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.
All fluids must be drained.
If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.
Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.
Engineered for 2023–2025 Cummins ISB 6.7L-300 engine applications, the OEM 6320933 Turbo Assembly is manufactured to meet original equipment specifications for accurate fit and dependable operation. This turbocharger is designed to route exhaust gases through the turbine, supporting proper airflow throughout the engine system. Constructed with durable components to withstand high temperatures and demanding duty cycles, it is built for lasting service in commercial and heavy-duty environments. Precision balancing and quality assembly contribute to smooth, consistent function under varying loads. Tamerx Diesel Products LLC supplies this Cummins ISB 6.7L-300 turbo assembly as a reliable solution for maintaining correct air handling and overall engine efficiency.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2023 | Cummins | ISB 6.7L-300 | ||||
| 2024 | Cummins | ISB 6.7L-300 | ||||
| 2025 | Cummins | ISB 6.7L-300 | ||||
PEOPLE ALSO ASKS | BLOG(S)
Your Cummins ISB 6.7L-300 Turbo Assembly OEM 6320933 is built to handle high exhaust temperatures and rapid rotational speeds, but careful maintenance helps ensure long service life and dependable operation. A well-maintained turbo assembly supports proper airflow and helps the engine deliver consistent output across varying conditions.
To take good care of it:
Maintain Proper Lubrication
- Change engine oil and filters at manufacturer-specified intervals
- Always use the correct oil grade recommended for the ISB 6.7L engine
- Verify oil supply lines to the turbo are clear and leak-free
Clean, high-quality engine oil is essential because the turbo’s internal bearings depend on continuous lubrication. Contaminated or degraded oil can cause premature wear.
Keep Airflow Clean
- Replace air filters regularly
- Inspect air intake hoses and clamps for damage or leaks
- Check intercooler and charge air piping for restrictions
Restricted or dirty airflow can increase stress on the turbo and reduce its ability to compress incoming air effectively.
Watch Engine Operating Conditions
- Allow the engine to idle briefly before shutdown, especially after heavy use
- Avoid rapid engine shutdown immediately after high-load operation
- Monitor for unusual noises, smoke, or vibration
This helps stabilize temperatures and prevents thermal shock to the turbo bearings and seals.
Check for Leaks and Security
- Inspect inlet and outlet connections for tightness
- Look for oil or exhaust leaks around the turbo housing
Leaks can lead to loss of performance and accelerated wear.
Respond to Fault Codes Promptly
- Address warning lights or diagnostic codes as soon as they appear
- Use proper diagnostic tools to pinpoint issues
Modern turbo systems are electronically monitored, and early detection helps prevent bigger problems.
By following these maintenance practices, you help protect your Cummins ISB 6.7L-300 Turbo Assembly OEM 6320933, support long-lasting operation, and keep your engine running reliably throughout its service life.
When a turbo assembly begins to fail, engine operation can quickly become unstable. Because the turbo controls airflow into the engine, ignoring early warning signs can lead to more serious internal damage.
The first step is identifying the symptoms.
Common signs of turbo trouble include:
- Noticeable loss of acceleration
- Whining, grinding, or siren-like noises
- Excessive exhaust smoke (blue, black, or white)
- Increased oil consumption
- Sluggish throttle response
- Check engine light with boost-related codes
If you experience these issues, reduce heavy driving immediately. Continuing to operate the vehicle under load can worsen internal wear or allow debris to enter the engine.
Next, schedule a professional inspection. A technician will typically:
- Check for excessive shaft movement
- Inspect oil supply and return lines
- Look for boost leaks in hoses or intercooler piping
- Test actuator or wastegate operation
In some cases, the issue may stem from restricted oil flow or a leak rather than complete turbo failure.
If internal damage is confirmed, replacement is often necessary. It is also critical to correct the root cause, such as oil contamination or overheating, to prevent repeat failure.
Acting quickly can help protect your engine and avoid more costly repairs.
Yes, the OEM 6320933 is designed to match the stock mounting, intake, and exhaust interfaces.
Symptoms such as irregular airflow feedback or emissions-related alerts can prompt inspection of the turbo assembly.
The OEM 6320933 is configured to interface with the original actuator and boost control hardware.
Exhaust gases from the engine drive the turbine section of the 6320933 assembly to support air management.






















































































































































































































































































