
Cummins QSB 6.7L, QSL Turbo Actuator 2013-2024: OEM 5603456H
CUMMINS QSB 6.7L, QSL TURBO ACTUATOR 2013-2024: OEM 5603456H

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Genuine New, Cummins Holset Turbo Actuator, Cummins Holset part number 5603456H ( OEM Part Number 5603456H ).This part is primarily made for a Cummins QSB 6.7L, QSL, production years 2013-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: 24 Volt
OEM NUMBERS
| Primary OEM | 5603456H |
| Additional OEM | 5452655, 5603456H, 6382095RX |
ADDITIONAL DETAILS
| CONDITION | Genuine New |
| UPC / Barcode | 00840490539822 |
| 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.
Managing turbocharger function within the air intake system, the Cummins QSB 6.7L, QSL Turbo Actuator 2013–2024 (OEM 5603456H) is designed for compatibility with select Cummins QSB 6.7L and QSL diesel engines. This actuator controls the turbocharger’s variable geometry, adjusting airflow based on engine demand to support proper operation. Manufactured to meet original equipment specifications, it ensures accurate fitment and reliable communication with the engine control module. The durable construction is built to withstand high temperatures and demanding conditions commonly found in heavy-duty diesel applications. Replacing a faulty or unresponsive unit with the OEM 5603456H turbo actuator helps maintain consistent turbocharger function and dependable engine operation.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2013 | Cummins | QSB 6.7L | QSL | |||
| 2014 | Cummins | QSB 6.7L | QSL | |||
| 2015 | Cummins | QSB 6.7L | QSL | |||
| 2016 | Cummins | QSB 6.7L | QSL | |||
| 2017 | Cummins | QSB 6.7L | QSL | |||
| 2018 | Cummins | QSB 6.7L | QSL | |||
| 2019 | Cummins | QSB 6.7L | QSL | |||
| 2020 | Cummins | QSB 6.7L | QSL | |||
| 2021 | Cummins | QSB 6.7L | QSL | |||
| 2022 | Cummins | QSB 6.7L | QSL | |||
| 2023 | Cummins | QSB 6.7L | QSL | |||
| 2024 | Cummins | QSB 6.7L | QSL | |||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins QSB 6.7L, QSL Turbo Actuator (OEM 5603456H) is responsible for controlling the turbocharger’s variable geometry system. It adjusts the position of internal vanes to regulate airflow and exhaust flow based on engine demands. Since this component relies on precise electronic and mechanical movement, proper care is essential to extend its lifespan.
Consistent maintenance and attention to related systems can help prevent premature wear or failure.
Tips to Extend the Life of Your Cummins Turbo Actuator
- Keep the turbocharger system clean
- Soot buildup and debris can affect vane movement, placing extra strain on the actuator.
- Inspect wiring and connectors regularly
- Ensure all electrical connections are secure and free from corrosion or damage.
- Address fault codes immediately
- Ignoring actuator-related warnings can lead to further damage or system imbalance.
- Maintain proper engine servicing
- Regular oil changes and engine maintenance help reduce contaminants that can affect turbo components.
- Check for exhaust system issues
- Leaks or restrictions can disrupt airflow and cause the actuator to work harder than necessary.
Taking care of the Cummins Turbo Actuator OEM 5603456H helps ensure accurate control of the turbo system and supports consistent engine operation. Routine inspections, clean components, and prompt diagnostics can significantly extend the service life of this important part.
A turbo actuator controls how much exhaust flow reaches the turbocharger, helping regulate boost pressure and overall engine operation. When the actuator begins to fail, it can disrupt how the turbo functions, leading to noticeable changes in engine behavior.
One of the most common signs is inconsistent or reduced boost pressure. This can affect how the engine responds, especially under load or acceleration.
Common signs of a bad turbo actuator include:
- Loss of engine power
- due to improper boost control
- Slow or delayed acceleration
- when pressing the throttle
- Check engine light
- related to turbo or boost system issues
- Inconsistent boost pressure
- causing uneven performance
- Turbo not engaging properly
- or staying stuck in one position
Drivers may also notice that the vehicle feels sluggish or does not respond as expected during normal driving conditions. In some cases, the actuator may become stuck due to carbon buildup or internal wear.
If these symptoms appear, a diagnostic scan and inspection of the turbo system are recommended. Identifying the issue early can help prevent further damage and restore proper turbo operation.
It manages turbo vane movement to regulate how exhaust gases interact with the turbocharger.
Engines equipped with variable geometry turbo systems use this actuator to control airflow dynamics.
The actuator changes the angle of internal turbo vanes to influence exhaust flow through the turbine.
Electronic commands from the engine control system direct the actuator’s movement.











































