
Cummins B6.7 Turbo Assembly 2022-2024: OEM 6395642
CUMMINS B6.7 TURBO ASSEMBLY 2022-2024: OEM 6395642

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 6395642RM ( OEM Part Number 6395642 ). 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 B6.7, production years 2022-2024, and comes with a One Million Miles or One Year Warranty.
OEM NUMBERS
| Primary OEM | 6395642 |
| Additional OEM | 6395642 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490555488 |
| WEIGHT | 49.00 LBS |
SHIPPING OPTIONS
Ship Weight : 49.00 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 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, 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 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.
Built for dependable turbocharger operation and consistent airflow management, the Cummins B6.7 Turbo Assembly (2022–2024) OEM 6395642 is a critical component for maintaining proper engine function. Designed to meet original equipment specifications, it ensures accurate compatibility with Cummins B6.7 engines across the specified model years. This turbo assembly helps regulate the movement of intake air and exhaust gases throughout the engine system, supporting efficient combustion and smooth operation under varying workloads. Manufactured from durable, high-quality materials, it is engineered to withstand extreme temperatures and demanding diesel environments. Ideal for technicians and fleet maintenance professionals, this OEM turbo assembly helps maintain reliable engine operation and long-term durability.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2022 | Cummins | B6.7 | ||||
| 2023 | Cummins | B6.7 | ||||
| 2024 | Cummins | B6.7 | ||||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins B6.7 Turbo Assembly (OEM 6395642) is a critical air-handling component that helps the engine make efficient use of exhaust energy. Designed for 2022–2024 Cummins B6.7 applications, this assembly is responsible for supplying the engine with the airflow needed to support combustion and maintain smooth operation across varying workloads.
Instead of allowing exhaust gases to leave the engine unused, the turbo assembly captures that energy and uses it to drive a turbine, creating a continuous flow of compressed air into the intake system.
What does the Cummins 6395642 Turbo Assembly do?
- Uses exhaust energy efficiently
- The turbo converts exhaust flow into mechanical movement, helping support the engine's airflow requirements.
- Compresses incoming air
- By increasing the density of the air entering the engine, the turbo helps ensure a steady supply of oxygen for combustion.
- Balances intake and exhaust flow
- It serves as a connection point between the engine's intake and exhaust systems, helping both work together effectively.
- Adapts to changing operating conditions
- The turbo responds to engine demand, adjusting airflow as operating conditions change.
- Supports emissions-related systems
- Proper airflow is essential for components such as EGR systems and aftertreatment equipment to function correctly.
- Promotes smooth engine operation
- Consistent air delivery helps maintain stable combustion and reliable engine performance.
Why is it important?
The turbo assembly is one of the hardest-working components on the engine because it constantly manages airflow while operating in a high-temperature environment. Without it, the engine would struggle to maintain the airflow needed for efficient combustion and proper operation of supporting systems.
In simple terms
Think of the Cummins 6395642 Turbo Assembly as the engine's airflow specialist. It takes energy from the exhaust stream and turns it into usable airflow, helping the engine breathe properly while supporting combustion, emissions control, and overall reliability.
A turbo assembly is not a component that follows a set replacement schedule. Unlike filters, belts, or fluids, a turbocharger is typically replaced based on its condition rather than mileage. With proper maintenance, many turbo assemblies can last 150,000 to 250,000 miles or more, and some may even last the life of the engine.
Instead of focusing on mileage alone, it's important to watch for signs that indicate the turbo is reaching the end of its service life.
Here are some common indicators that replacement may be necessary:
- Noticeable loss of engine power
- If the turbo can no longer supply adequate airflow, the engine may feel sluggish during acceleration or when operating under load.
- Excessive exhaust smoke
- Blue smoke may indicate oil leaking through worn turbo seals, while black smoke can signal airflow issues affecting combustion.
- Unusual turbocharger noises
- Whining, grinding, rattling, or siren-like sounds often point to internal wear or bearing failure.
- Increased oil consumption
- A failing turbo can allow oil to leak into the intake or exhaust system, causing oil levels to drop more quickly than normal.
- Frequent boost-related fault codes
- Persistent overboost or underboost conditions may indicate the turbo assembly is no longer operating correctly.
- Visible damage during inspection
- Excessive shaft movement, damaged compressor blades, or oil contamination are strong signs that replacement should be considered.
The best way to maximize turbo life is through regular oil changes, proper engine warm-up and cool-down practices, and routine inspections. Rather than replacing the turbo at a specific mileage, it's best to replace it when performance, reliability, or inspection results indicate it's necessary.
The turbo assembly responds to increased exhaust flow during acceleration by spinning the turbine faster, helping the engine maintain adequate airflow as power demand increases.
Because the turbocharger compresses incoming air, it helps compensate for reduced atmospheric pressure at higher altitudes, allowing the engine to maintain more consistent airflow.
The bearing system supports the rotating shaft connecting the turbine and compressor wheels, allowing them to spin at extremely high speeds while minimizing friction.
The internal rotating components can reach rotational speeds exceeding 100,000 RPM under certain operating conditions, depending on engine load and airflow demand.

















































