✅ Compatibility

• Turbo Model: HX40W (Holset / Cummins Turbo Technologies)
• Engine: Cummins 6CTAA / 6CTAA8.3 (8.3L 6-cylinder inline diesel, 330–350 HP)
• OEM Part Numbers: 3591021, 3598068, 3800405
• Common Equipment Applications (Cummins 6CTAA engine):
  • Heavy-Duty Trucks: Trucks and coaches with Cummins 6CTAA 8.3L engine
  • Construction Equipment: Large excavators, wheel loaders, and other construction machinery with Cummins 6CTAA engine
  • Generator Sets: Stationary and mobile generator sets with Cummins 6CTAA engine
  • Marine Applications: Marine propulsion and auxiliary engines with Cummins 6CTAA engine
• Note: Verify your engine serial number and existing turbo part number before ordering. Contact us with your engine serial for fitment confirmation.

🔧 Product Highlights

• Direct OEM Replacement: Drop-in fit for Cummins 6CTAA / 6CTAA8.3 engines — matches original oil feed/drain ports, inlet/outlet flanges, and mounting configuration
• Holset HX40W Turbo Platform: HX40W is the original equipment specification turbocharger for the Cummins 6CTAA 8.3L at 330–350HP — one of Cummins’ most widely used high-output C-series engines in trucks, construction, and industrial applications
• 330–350HP Output Range: Engineered for the 330–350HP power rating of the Cummins 6CTAA — delivers the correct boost pressure and airflow for this specific power configuration
• Restores Full Engine Performance: Corrects loss of power, excessive black smoke, turbo lag, and boost pressure faults caused by a worn or damaged turbocharger
• New Aftermarket Quality: Manufactured to Holset / Cummins OEM specifications for reliable boost pressure and long-term performance in demanding truck and off-highway applications

📦 What's Included

• 1× Turbocharger HX40W (3591021 / 3598068 / 3800405) — New Aftermarket

🔑 Key Specs

• Part Numbers: 3591021, 3598068, 3800405
• Turbo Model: HX40W (Holset / Cummins Turbo Technologies)
• Compatible Engine: Cummins 6CTAA / 6CTAA8.3 (8.3L 6-cylinder inline diesel)
• Engine Power Rating: 330–350 HP
• Condition: New Aftermarket
• SKU: 3591021

⚠️ Please verify your engine serial number and existing turbo part number before purchasing. If unsure of compatibility, contact us with your Cummins engine serial number and we will confirm fitment.