
International Navistar 6.6CV Turbo Actuator 2020-2022: OEM 6042211C91
INTERNATIONAL NAVISTAR 6.6CV TURBO ACTUATOR 2020-2022: OEM 6042211C91

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured, Tamerx Turbo Actuator, Tamerx part number 6042211RM ( OEM Part Number 6042211C91 ).This part is primarily made for a International Navistar 6.6CV, production years 2020-2022, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 6042211C91 |
| Additional OEM | 6042211C91 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490534940 |
| WEIGHT | 6.00 LBS |
SHIPPING OPTIONS
Ship Weight : 6.00 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.
Installed on International Navistar 6.6CV engines produced between 2020 and 2022, OEM 6042211C91 is a turbo actuator designed to control the position of the turbocharger mechanism for regulated airflow management. This component is manufactured to OEM specifications to ensure proper fitment and compatibility with factory turbo system assemblies. Built from durable materials, it is engineered to handle the operating conditions common in modern diesel applications. The actuator supports accurate turbo control during normal engine operation. It is a reliable option for fleet service and targeted repair needs requiring dependable turbo system functionality.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2020 | International Navistar | 6.6CV | ||||
| 2021 | International Navistar | 6.6CV | ||||
| 2022 | International Navistar | 6.6CV | ||||
PEOPLE ALSO ASKS | BLOG(S)
The main role of the International Navistar 6.6CV Turbo Actuator 2020–2022: OEM 6042211C91 is to control the position of the turbocharger’s variable geometry mechanism. By adjusting the internal vanes of the turbo, the actuator regulates exhaust flow and manages how much air is delivered to the engine.
In a variable geometry turbocharger (VGT) system, the actuator receives commands from the engine control module (ECM). Based on engine speed, load, and operating conditions, the actuator moves the turbo vanes to optimize airflow. At lower engine speeds, the vanes close slightly to increase exhaust velocity and improve response. At higher speeds or heavier loads, the vanes open to regulate airflow and maintain proper boost levels.
OEM 6042211C91 is an electronically controlled unit that includes an internal motor and position sensor. It continuously communicates with the ECM to ensure precise vane positioning in real time.
The primary responsibilities of this turbo actuator include:
- Regulating turbo vane position
- Managing airflow into the engine
- Supporting emissions control strategies
- Helping maintain consistent engine response
In short, the International Navistar 6.6CV Turbo Actuator is essential for proper turbocharger operation, stable engine performance, and emissions compliance in 2020–2022 applications.
A bad turbo actuator can cause noticeable boost control problems, reduced engine performance, and emissions faults. The actuator controls the position of the variable geometry vanes (VGT) or wastegate, regulating boost pressure based on engine demand. When it fails, the turbo cannot properly manage airflow, leading to drivability issues and potential engine derate.
One of the earliest signs is a check engine light accompanied by boost-related fault codes. Drivers often notice loss of power, sluggish acceleration, or inconsistent throttle response. In some cases, the engine may enter limp mode to protect itself from overboost or underboost conditions.
Midway through diagnosis, the most common signs of a failing turbo actuator include:
- Underboost or overboost fault codes
- Engine derate or limp mode activation
- Poor acceleration or lack of power under load
- Inconsistent or unstable boost pressure readings
- Actuator calibration or position sensor errors
- Whistling, surging, or abnormal turbo behavior
In more advanced cases, the actuator may fail to move the vanes entirely, causing excessive exhaust backpressure or uncontrolled boost. Electrical failures, wiring damage, soot buildup in the VGT mechanism, or internal actuator motor failure are common root causes.
Before replacing the actuator, verify proper wiring, perform calibration tests, and inspect the turbo for mechanical issues. Early diagnosis and correction of soot buildup or electrical faults can prevent further turbo damage and costly repairs.
It is the factory turbo actuator that controls the turbocharger’s movement on 6.6CV engines from 2020 through 2022.
It mounts on the turbocharger assembly where it interfaces with the internal variable geometry or wastegate mechanism.
It adjusts the turbocharger’s position in response to engine control module commands to regulate airflow.
Yes, it is an OEM-specified actuator intended for direct replacement on compatible engines.








