Turbocharger CHRA For Cummins Engine HE200 5554735 Big Hole Holset

Heavy-Duty Turbocharger CHRA Cartridge for Cummins Engine HE200 / HE200WG "Big Hole" Series | Holset 5554735

Restore low-end pulling torque, eliminate manifold boost lag under full payloads, and stop oil blow-by into intake charge plumbing with this high-precision Turbocharger CHRA (Center Housing Rotating Assembly) Cartridge Assembly. Engineered specifically for the heavy-duty "Big Hole" oil inlet/mounting configuration of Cummins commercial engines, this direct replacement core resolves common forced-induction failures including shaft end-play, compressor wheel erosion, high-pitched whistling, and journal bearing wear.

Belonging to the heavy-duty Holset HE200 / HE200WG Wastegate Turbocharger platform by Cummins Turbo Technologies, this complete CHRA matches Holset core production tracking index 5554735 (alongside related HE200-series references like 5452984, 3774227, 3774228, 3774229, 3774230, and X3M04400). Sourcing an isolated dynamic-balanced CHRA core cartridge allows commercial fleet operators, workshops, and mechanics to perform an OE-spec overhaul while preserving the intact, expensive cast-iron turbine manifold and aluminum compressor outer housings.

Detailed Commercial Vehicle & Engine Application Mapping

This heavy-duty commercial turbo cartridge is custom-tailored to communicate seamlessly with Cummins and partner commercial transport platforms:

• Commercial Transport Vehicles: Fits Ashok Leyland, Tata Motors, and Eicher heavy commercial trucks, cargo tippers, and passenger buses.

• Off-Highway & Industrial Equipment: Fits Cummins-powered industrial generators, construction equipment, and agricultural machinery running HE200 series turbochargers.

• Engine Suitability: Explicitly calibrated for Cummins 4BT / 6BT / ISBe / B-Series Turbocharged Engines configured with "Big Hole" oil feed flange specifications.

Part Number Cross-Reference & OEM Details

• Holset CHRA Part Number: 5554735

• Cross-Reference Part Numbers: 5452984 | 3774227 | 3774228 | 3774229 | 3774230

• Ashok Leyland / OEM Reference: X3M04400

• Turbo Architecture: Holset HE200 / HE200WG (Big Hole Design)

• Manufacturer: Holset / Cummins Turbo Technologies

Key Technical Specifications & Features

• Big Hole Oil Passage Architecture: Precision-machined central bearing housing features expanded internal oil feed passages ("Big Hole" spec) to optimize lubricant throughput and heat dissipation under sustained heavy loads.

• VSR Ultra-High-Speed Dynamic Balancing: Core components undergo precision dynamic balancing on computerized Vibration Sorting Rig (VSR) machinery at full operational RPMs to eliminate micro-vibrations, ensuring smooth rotation and extending journal bearing lifespan.

• High-Temperature Inconel Alloy Turbine Wheel: Built with high-nickel Inconel superalloy metallurgy designed to withstand extreme exhaust gas temperatures (EGTs) without blade warping or thermal fatigue during steep gradient climbs.

• Heavy-Duty Journal & Thrust Bearings: Floating copper-alloy journal bearings and upgraded thrust collar arrays handle intense backpressures and heavy axial thrust loads during long-haul transport.

• Advanced Internal Fluid Seals: Multi-piece piston ring oil seals keep motor oil locked inside the central bearing housing, preventing oil contamination in air intake charge pipes or downstream SCR/DPF aftertreatment systems.