Click image to zoom
4040552 AC Actuator for Cummins QSB HE221W Turbocharger
Show more cross references
FOR 4033243 AC FOR 4040203 AC FOR 4040204 AC FOR 4040553 AC FOR 4040554 AC FOR 4040555 AC FOR 4042674 AC FOR 4043944 AC FOR 4043945 AC FOR 4044884 AC FOR 4044887 AC FOR 4955266 AC FOR 4955272 AC FOR 4955273 AC FOR 4955721 AC FOR 4955725 ACSubtotal: US$ 15.00
Send an InquiryThis aftermarket replacement actuator FOR 4040552 AC is designed for Cummins QSB Tier 3 truck engines using the HE221W turbocharger. It serves as an aftermarket replacement application for multiple OEM reference numbers, helping buyers restore boost control functionality. Verify your specific engine code and turbo configuration before ordering to ensure proper fitment.
Key Specifications
This turbocharger actuator is listed under part number FOR 4040552 AC for the HE221W turbo model. It serves as a replacement application for Cummins QSB Tier 3 truck engines. The unit weighs approximately 0.8 kg and is designed to restore boost control functionality. Key specifications include:
- Part Number: FOR 4040552 AC
- Product Type: Actuator
- Turbo Model: HE221W
- Gross Weight: 0.8 kg
- OEM References: Includes FOR 4033243 AC, FOR 4040203 AC, and FOR 4040553 AC
Verify these details against your existing component to ensure correct identification.
Application & Compatibility
This actuator is listed for Cummins QSB Tier 3 truck engines using the HE221W turbocharger. It serves as a replacement application for multiple OEM reference numbers, including FOR 4033243 AC, FOR 4040203 AC, and FOR 4040553 AC. Buyers should verify their specific engine code, turbo model, and existing part number before ordering. This ensures the unit matches your vehicle's boost control requirements. Do not assume universal fitment across all QSB variants.
Technical Notes
This actuator manages boost pressure for the HE221W turbocharger in Cummins QSB Tier 3 applications. Proper installation requires checking the vane mechanism for smooth movement before mounting the unit. Ensure the electrical related electrical detail matches your engine harness specifications to prevent signal errors. Inspect the mounting surface for debris that could affect sealing. Verify that the actuator stroke aligns with your specific turbo configuration. Consult your service manual for torque specifications during reassembly.
B2B Supply
We support B2B buyers with volume pricing for this HE221W actuator replacement. Worldwide shipping is available for fleet parts distributors and repair shops. Our team provides technical fitment support to help verify part numbers and OEM references before ordering. Contact us to confirm stock availability and discuss bulk order requirements for your Cummins QSB applications.
Product FAQ
CUMMINS and other product, brand and model names are the property of their respective owners and are used for reference and application-lookup only. LeadTurbo is not affiliated with or endorsed by CUMMINS.
For More Information
Frequently Asked Questions
What types of turbocharger spare parts do you offer? Warranty, shipping, quality and more.
Complete Turbo Units
Complete turbo units designed for rigorous heavy-duty use where OEM units may fall short.
CHRA / Core Assemblies
Brand-new compatible CHRA cores — like-new performance at a fraction of replacement cost.
Turbine Wheels & Shafts
Precision-balanced turbine shafts engineered from inside out for superior durability.
Turbine Housings
Silicon-molybdenum (Si-Mo) nodular cast iron — engineered for extreme heat resistance.
Compressor Housings
OEM-matched geometry and surface finish — advanced casting and machining for perfect fitment.
Bearing Housings
Rock-solid platform engineered for high-output rebuilds — the foundation for performance.
Compressor Wheels
Aluminum, stainless steel, or titanium alloys — precision machined for superior responsiveness.
