✅ Compatibility

• Replace Part Numbers: 3800471 / 3800471RX
• Turbo Model: HX55 / HX55-E9861L / H22E11D
• Fit for Cummins Engine: ISM / ISME / ISME 380 20 / ISME Euro-2 / ISME Euro-3 / M11 / B5.9-C
• Cummins Truck & Bus (2007–2012): ISM / ISME / M11 engine
• Cummins Truck & Bus (1999–2009): M11 engine (including Truck Delta Alpha Plus)

🔧 Product Highlights

• Holset HX55 Heavy-Duty Platform: Built on the proven Holset HX55 large-frame turbocharger platform — the OEM-specified turbo for the Cummins ISM, ISME, and M11 engines in Class 8 trucks and heavy-duty buses across Euro-2 and Euro-3 emission standards
• OEM-Grade Precision: Engineered to meet or exceed original Cummins specifications for the ISM/ISME/M11 engine, ensuring correct boost pressure, air flow, and thermal performance under continuous long-haul truck and bus operating loads
• Direct Fit Replacement: Standard HX Dodge downpipe flange (4.25” I.D. / 4.75” O.D.) with external wastegate flange — matches OEM mounting points and oil feed/return connections for plug-and-play installation
• High-Performance Specification: Compressor TRIM 0.70 / A/R 0.68 (Ind. 62.90mm / Exd. 97.80mm); Turbine TRIM 93 / A/R 0.88 (Ind. 86.40mm / Exd. 77.80mm) — capable of supporting up to 500+ BHP on Cummins ISM/M11 applications
• Restored Power & Efficiency: Eliminates turbo lag, black smoke, power loss, and excessive oil consumption caused by a worn or damaged HX55 turbocharger on Cummins ISM/ISME/M11 powered trucks and buses

📦 What's Included

• 1 × Turbocharger HX55 3800471 (New Aftermarket)

🔑 Key Specifications

• Part Number: 3800471 / 3800471RX
• Turbo Model: HX55 / HX55-E9861L / H22E11D
• Condition: New, Aftermarket
• Compatible Engine: Cummins ISM / ISME / M11 / B5.9-C
• Emission Standard: Euro-2 / Euro-3
• Downpipe Flange: Standard HX Dodge — 4.25” I.D. / 4.75” O.D.
• Wastegate: External Wastegate Flange
• Compressor: TRIM 0.70 / A/R 0.68 / Ind. 62.90mm / Exd. 97.80mm
• Turbine: TRIM 93 / A/R 0.88 / Ind. 86.40mm / Exd. 77.80mm
• Max Power Support: 500+ BHP
• Application: Class 8 Truck, Heavy-Duty Bus
• Years: 1999–2012
• Quantity: 1 Piece

All part numbers are provided for reference purposes only. Fuel Parts Depot is an independent aftermarket supplier and is not affiliated with Cummins Inc. or Holset.