4037623 HX55W Turbocharger Actuator for Doosan DL450 & Hyundai HL780-9

This aftermarket 4037623 HX55W turbo actuator is a replacement component for Cummins QSM2, QSM3, and QSM4 Tier 3 engines. It is listed for reference applications including the Doosan DL450 and Hyundai HL780-9 wheel loaders. Verify your specific engine code and turbo configuration before ordering to ensure correct fitment.

Key Specifications

• Part Number: 4037623
• Product Type: Turbocharger Actuator
• Turbo Model: HX55W
• Reference Applications: Doosan DL450, Hyundai HL780-9
• Engine Clues: Cummins QSM2, QSM3, QSM4 Tier 3
• Packing: N/A
• Gross Weight: 0 kg
• OEM Reference Numbers: None listed in input

Verify the specific engine code and turbo configuration on your unit before ordering. This actuator is a replacement component for the listed wheel loader applications.

Application & Compatibility

Source application path clues for buyer verification. These are source category/application paths, not confirmed fitment claims:

• DOOSAN > DL450 > DL450 Wheel loader > CUMMINS QSM2 QSM3
• HYUNDAI > Hyundai 9 Series > Hyundai Hl780-9 Wheel Loader > Cummins QSM4 Tier 3

This actuator is listed for reference applications including the Doosan DL450 wheel loader equipped with Cummins QSM2 or QSM3 engines, and the Hyundai HL780-9 wheel loader with Cummins QSM4 Tier 3 engines. These application paths serve as verification clues rather than confirmed fitment. Buyers should cross-check the specific engine code, turbo model HX55W, and part number 4037623 against their unit’s nameplate before ordering. If your application differs from these examples, submit a technical inquiry with a clear photo of the turbo nameplate to confirm the correct replacement actuator for your specific configuration.

Technical Notes

The HX55W turbocharger actuator is a mechanical component that controls the waste gate to regulate exhaust flow. For this specific 4037623 replacement, verify the mounting pattern and related hardware geometry against your existing unit. Inspect the old actuator for pivot point wear or spring tension issues before installation. Ensure all hardware and seals are accounted for during the swap. If the original actuator shows significant corrosion or binding, replace the entire assembly rather than attempting a partial repair. Technical fitment support is available to confirm the correct related hardware configuration for Cummins QSM2, QSM3, and QSM4 Tier 3 engines.

B2B Supply

LeadTurbo supports B2B buyers, repair shops, and distributors with volume pricing for the 4037623 HX55W actuator. Worldwide shipping is available for international orders. Our technical fitment support team can verify engine codes such as Cummins QSM2, QSM3, and QSM4 Tier 3 against your specific wheel loader application. Submit a technical inquiry with a clear photo of the turbo nameplate to confirm the correct replacement actuator before ordering. This service helps ensure you receive the accurate component for your Doosan DL450 or Hyundai HL780-9 unit.