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Cummins Turbocharger 3783603 4045076

Name: Cummins Turbocharger 3783603 4045076
Brand: Komotashi
SKU: 00509
Rating: 4.8 (0 reviews)

Product Name: Turbocharger
Matching Engine: DCEC Dongfeng Cummins ISLe / 6LTAA 8.9L L Series Diesel Engine (L340 / L360 horsepower)
Turbo Model: HX40W
OEM Part Numbers: 3783603、4045069
Interchangeable Part Numbers: 2881908、4045076
Application Scenarios: Medium & heavy-duty trucks, large passenger coaches, construction machinery, industrial diesel generator overhaul replacement

This HX40W series pneumatic wastegate turbocharger covers two official OEM numbers 3783603 and 4045069, developed by Holset exclusively for Dongfeng Cummins DCEC 8.9L L-series diesel engines (340/360 horsepower). By compressing intake air to raise cylinder air density, it optimizes fuel combustion efficiency, elevates engine power output, reduces fuel consumption and exhaust black smoke emissions, serving as standardized aftermarket replacement spare parts for domestic commercial vehicles and engineering equipment maintenance.

Overview

Product Details

Manufactured strictly in accordance with Holset and Cummins original drawing dimensions, tolerance standards and production processes, the two part numbers share identical overall structure, mounting dimensions and boost pressure parameters, and can be mutually replaced for DCEC L-series engines. It effectively solves common vehicle malfunctions including insufficient climbing power, heavy black smoke during acceleration, abnormal engine oil consumption and turbo lag caused by aging or damaged turbo assemblies.The rotor assembly undergoes professional high-speed dynamic balance calibration; all finished products pass air tightness testing, boost pressure calibration and comprehensive appearance inspection before delivery, capable of stable continuous operation under long-term heavy load, frequent start-stop and high exhaust temperature harsh working conditions.Interchangeable OEM No.: 3783603、4045069、2881908、4045076

Product Advantages

High-strength Material & Reliable Structure

Turbine wheel and compressor impeller adopt high-temperature resistant nickel-based alloy material, excellent thermal fatigue resistance, fully adapted to the high exhaust temperature operating environment of 8.9L large-displacement heavy-duty diesel engines
Floating oil lubrication bearing system ensures smooth rotor rotation, effectively suppresses oil leakage risks, withstands long-duration heavy load impact and frequent urban start-stop cycles
External pneumatic diaphragm wastegate structure, precisely regulates intake boost pressure in real time, avoids engine damage triggered by overboost, and delivers sensitive low-speed torque response

OEM Standard Precision Manufacturing

Overall outline, mounting hole layout and boost pressure calibration parameters fully consistent with original factory components, supporting direct bolt-on installation without secondary modification
High-precision dynamically balanced rotor reduces operating vibration and noise, effectively extends the total service life of the turbocharger
Multi-channel air tightness inspection eliminates oil seepage, compressor surge and abnormal exhaust noise faults

Compatibility & Supply Status

Fully compatible with Dongfeng Cummins DCEC ISLe/6LTAA 8.9L L340/L360 diesel engines, turbo specification HX40W, dual interchangeable OEM codes 3783603 & 4045069; widely applied to Dongfeng Tianlong heavy trucks, intercity coaches, wheel loaders, road rollers and stationary industrial generator sets
Mature heavy-duty diesel engine aftermarket spare part product line, stable inventory reserves and fast delivery cycle
Brand-new finished products in stock, favorable unit price and flexible cooperation terms available for bulk procurement

Technical Specifications

Part Name	Applicable Engine	Turbo Model	Supporting Equipment
OEM Part Number	Turbocharger	DCEC Dongfeng Cummins ISLe/6LTAA 8.9L L Series (L340/L360) Diesel Engine	3783603
HX40W	Medium/Heavy Truck, Large Coach, Construction Machinery, Diesel Generator Set	Turbocharger	DCEC Dongfeng Cummins ISLe/6LTAA 8.9L L Series (L340/L360) Diesel Engine