
Cummins QSB 4.5L Turbo Actuator 2018-2022: OEM 5502959RX
CUMMINS QSB 4.5L TURBO ACTUATOR 2018-2022: OEM 5502959RX

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 5502959RM ( OEM Part Number 5502959RX ). 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 QSB 4.5L, production years 2018-2022, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: 24 Volt Turbo Actuator for a HE200VG Turbo
OEM NUMBERS
Primary OEM | 5502959RX |
Additional OEM | 5325815, 05454801, 5502959, 5502959RX |
ADDITIONAL DETAILS
CONDITION | Remanufactured |
UPC / Barcode | |
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.
Designed for Cummins QSB 4.5L engines produced between 2018 and 2022, the OEM 5502959RX Turbo Actuator helps manage turbocharger function according to original factory parameters. This component is built for direct compatibility, allowing seamless installation without system alterations. It supports proper airflow regulation by responding accurately to engine conditions, contributing to stable engine output. Whether replacing a faulty unit or conducting routine maintenance, this actuator is a dependable option that fits as intended. OEM quality ensures consistent integration with existing engine systems.
FITMENT CHART
YEAR | MAKE | ENGINE(S) | ||||
---|---|---|---|---|---|---|
2018 | Cummins | QSB 4.5L | ||||
2019 | Cummins | QSB 4.5L | ||||
2020 | Cummins | QSB 4.5L | ||||
2021 | Cummins | QSB 4.5L | ||||
2022 | Cummins | QSB 4.5L |
PEOPLE ALSO ASKS | BLOG(S)
The Cummins QSB 4.5L engine, widely used in construction and industrial machinery, relies on precise airflow control for smooth and consistent operation. A key component in this process is the turbo actuator, and the OEM 5502959RX is the factory-matched solution for model years 2018 through 2022.
The turbo actuator works with the turbocharger to manage exhaust flow and adjust the position of the vanes or wastegate. This ensures the engine receives the right amount of air at different RPMs and load conditions.
Key features of the OEM 5502959RX turbo actuator include:
- Electronic Control Module
- Receives signals to regulate turbo output
- Integrated Position Sensor
- Helps maintain accurate vane or gate control
- Sealed Housing
- Designed to resist heat, dust, and moisture
- Direct Fit Design
- Matches QSB 4.5L engine mount points
- Factory Calibration
- Supports proper synchronization with the ECU
To avoid compatibility issues, always confirm your part number (5502959RX) and engine model before ordering.
This actuator is ideal for restoring reliable turbo control in excavators, tractors, and loaders powered by Cummins QSB 4.5L engines.
The turbo actuator plays a critical role in controlling the flow of exhaust gases to the turbocharger. Keeping it in good condition helps ensure smooth engine operation and avoids unnecessary repair costs. Here are the most effective maintenance practices for your turbo actuator:
- Regular Inspection
- Check the actuator rod and housing for corrosion, rust, or damage.
- Ensure the actuator arm moves freely when the engine is off (if manually accessible).
- Listen for abnormal noises like rattling or sticking.
- Keep the Vacuum or Electronic Lines Clean
- For vacuum actuators: check hoses for cracks, splits, or loose connections.
- For electronic actuators: inspect connectors and wiring for corrosion or damage.
- Use contact cleaner to gently clean connectors without damaging sensors.
- Monitor for Fault Codes
- Use an OBD-II scanner to check for turbo-related fault codes.
- Codes like P2563 or P0045 can indicate actuator issues or signal errors.
- Maintain the Entire Turbo System
- Replace engine oil and filters regularly to prevent buildup in the actuator’s moving parts.
- Ensure the turbocharger itself is clean and free of carbon deposits.
- Address boost control or EGR system issues promptly, as they affect actuator performance.
- Avoid Aggressive Driving on a Cold Engine
- Allow the engine to warm up before high-speed driving. Cold oil flow can strain turbo components, including the actuator.
- Allow the engine to warm up before high-speed driving. Cold oil flow can strain turbo components, including the actuator.
Staying proactive with turbo actuator maintenance can prevent erratic engine behavior, extend component life, and support long-term reliability.
This actuator electronically controls the turbocharger’s vanes or wastegate to regulate boost pressure based on engine load.
It is a direct-fit replacement, but calibration or initialization using Cummins software may be required after installation.
Yes, a faulty actuator can lead to poor turbo response, low boost, and reduced power or engine derate conditions.
Yes, installation should be performed by a qualified technician to ensure proper alignment and electronic setup.