4043584 HE221W Turbocharger Core for Cummins ISDE4 & QSB4

This 4043584 HE221W turbocharger core is an aftermarket replacement component designed for Cummins ISDE4 and QSB4 engine applications. It serves as a central CHRA assembly for repair shops and distributors seeking to rebuild or replace turbo units in Cummins truck and industrial fleets, with fitment verification required against specific OEM reference numbers before ordering.

Key Specifications

• Part Number: 4043584
• Product Type: Turbocharger Core (CHRA)
• Turbo Model: HE221W
• Gross Weight: 3 kg
• Packing Dimensions: 18 x 18 x 21 cm
• Representative OEM References: 49189-09740, 2834301, 2834782

This core assembly includes the turbine wheel, compressor wheel, and central bearing housing. The visible machining and mounting flanges are consistent with standard HE221W configuration. Verify the specific part number and engine code against your current unit to ensure the correct replacement component is selected.

Application & Compatibility

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

• CUMMINS > CUMMINS TRUCK > CUMMINS ISDE4
• CUMMINS > CUMMINS INDUSTRIAL > CUMMINS QSB4
• CUMMINS > CUMMINS TRUCK TIER 3 > CUMMINS QSB
• CUMMINS > CUMMINS TRUCK > CUMMINS QSB TIER-3
• CUMMINS > CUMMINS VARIOUS > CUMMINS QSB4 TIER 3
• CUMMINS

This core is listed for Cummins ISDE4, QSB4, and QSB Tier 3 applications, including truck and industrial engine variants. The extensive list of 127 OEM reference numbers, such as 49189-09740 and 2834301, serves as a verification tool rather than a confirm of universal fitment. Buyers should cross-reference these numbers against their specific engine code, production year, and current turbo configuration. Verify the part number 4043584 and HE221W model designation against your existing unit to ensure the correct replacement application is selected before ordering.

Technical Notes

The HE221W core assembly features a central bearing housing with two flanged mounting surfaces and a threaded hole for secure installation. Visible turbine and compressor wheels exhibit curved blade profiles, with the turbine wheel featuring a copper-colored center cap. Machined metal surfaces maintain a dark grey finish, consistent with standard CHRA construction. Buyers should verify that the mounting flange dimensions and threaded hole specifications match their existing turbocharger housing before ordering. This component is intended for rebuild applications where the original housing remains serviceable. Confirm the part number 4043584 and engine code alignment to ensure the correct replacement application is selected.

B2B Supply

LeadTurbo supports B2B buyers, repair shops, and distributors with volume pricing and worldwide shipping for the 4043584 HE221W core. Technical fitment support is available to help verify part numbers, engine codes, and OEM reference numbers against your specific Cummins ISDE4 or QSB4 application. For bulk orders or fleet maintenance programs, contact our team to confirm stock availability and shipping timelines. We provide pre-shipment inspection reports to ensure the core assembly meets your rebuild requirements. Verify all specifications and application details before placing an order to ensure the correct replacement component is selected for your turbocharger repair project.