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4039918 HX40W Turbocharger Replacement for CUMMINS ISC

4039918 HX40W turbocharger for CUMMINS ISC engines. Aftermarket replacement application for Freightliner, Ford, and Kenworth. Verify part number and OEM references before ordering.

Orders without stock ship approximately 60 days after ordering. Estimated ship date if ordered today: .

Type Turbocharger On backorder — orders accepted Part # 4039918 Models HX40W Weight 16.00 kg Packing 26*30*33
Cross Reference 4039919
Show more cross references 4039919 4089931
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12-Month Warranty Shipping to Canada only. OEM-Grade Quality

This 4039918 HX40W turbocharger is an aftermarket replacement unit designed for CUMMINS ISC engines in heavy-duty trucks and school buses. It serves as an aftermarket replacement application for Freightliner, Ford, Kenworth, and Blue Bird vehicles, with OEM reference numbers 4039919 and 4089931 available for fitment verification.

Key Specifications

  • Part Number: 4039918
  • Product Type: Turbocharger
  • Turbo Model: HX40W
  • Engine Application: CUMMINS ISC
  • Packing Dimensions: 26*30*33 cm
  • Gross Weight: 16 kg
  • OEM Reference Numbers: 4039919, 4089931
  • Image Availability: Not available

These specifications support initial identification and fitment verification. Buyers should cross-check the part number and OEM references against their specific vehicle service records to ensure the correct HX40W configuration is selected for their CUMMINS ISC engine application.

Application & Compatibility

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

  • Freightliner > CUMMINS ISC
  • Blue Bird > CUMMINS ISC
  • FORD > CUMMINS ISC
  • Kenworth > T300; T370 > T300; T370 Medium-duty truck > CUMMINS ISC
  • Thomas Built Buses > Saf-T-Liner HDX; Saf-T-Liner MVP EF; Saf-T-Liner MVP ER > Saf-T-Liner HDX; Saf-T-Liner MVP EF; Saf-T-Liner MVP ER School bus > CUMMINS ISC
  • VOLKSWAGEN > CUMMINS ISC

This HX40W turbocharger is listed for CUMMINS ISC engine applications in heavy-duty trucks and school buses. Reference applications include Freightliner, Ford, Kenworth T300/T370, Blue Bird, and Thomas Built Buses. Buyers should verify the specific vehicle model, production year, and engine configuration against their service records. Cross-check OEM reference numbers 4039919 and 4089931 to confirm the correct HX40W configuration for your unit. Technical fitment support is available to assist with verification before ordering.

Technical Notes

The HX40W is a fixed-geometry turbocharger commonly associated with CUMMINS ISC engine applications. Technical verification should focus on the turbine housing inlet flange, compressor outlet diameter, and mounting bolt patterns. Buyers should confirm that the existing exhaust downpipe and intercooler piping align with the HX40W physical dimensions. Cross-check OEM reference numbers 4039919 and 4089931 against your service records to ensure the correct configuration is selected. Technical fitment support is available to assist with these verification steps before ordering.

B2B Supply

LeadTurbo supports B2B buyers, repair shops, and distributors with volume pricing and worldwide shipping for the 4039918 HX40W turbocharger. Technical fitment support is available to assist with verifying part numbers, engine codes, and OEM reference numbers before ordering. For fleet or bulk inquiries, contact our team to discuss specific requirements and shipping options. Verify all application details to ensure the correct HX40W configuration is selected for your CUMMINS ISC engine.

Product FAQ

Verify that the existing dump valve or blow-off valve matches the HX40W compressor outlet size and pressure rating. Consult the vehicle service manual for CUMMINS ISC applications to ensure correct integration.

Measure the compressor outlet diameter and compare it with the intercooler inlet size on your CUMMINS ISC engine. Ensure the 4039918 HX40W outlet matches the existing piping to prevent leaks or airflow restriction.

Check the turbine inlet flange bolt pattern and diameter against the existing exhaust downpipe. Confirm that the HX40W turbine housing aligns with the CUMMINS ISC exhaust manifold configuration.

The 4039918 HX40W is associated with OEM reference numbers 4039919 and 4089931. Use these numbers to cross-check fitment for Freightliner, Ford, and Kenworth CUMMINS ISC applications.

OTHER 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 OTHER.

Compatibility Verify part number 4039918, engine code CUMMINS ISC, vehicle application, production year, and OEM reference numbers 4039919 or 4089931 before ordering. Confirm turbo configuration and mounting details for your specific application.

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Frequently Asked Questions

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Turbochargers

Complete Turbo Units

Complete turbo units designed for rigorous heavy-duty use where OEM units may fall short.

CHRA Core

CHRA / Core Assemblies

Brand-new compatible CHRA cores — like-new performance at a fraction of replacement cost.

Turbine Wheel

Turbine Wheels & Shafts

Precision-balanced turbine shafts engineered from inside out for superior durability.

Turbine Housing

Turbine Housings

Silicon-molybdenum (Si-Mo) nodular cast iron — engineered for extreme heat resistance.

Compressor Housing

Compressor Housings

OEM-matched geometry and surface finish — advanced casting and machining for perfect fitment.

Bearing Housing

Bearing Housings

Rock-solid platform engineered for high-output rebuilds — the foundation for performance.

Compressor Wheels

Compressor Wheels

Aluminum, stainless steel, or titanium alloys — precision machined for superior responsiveness.

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