
Product Introduction
The HE551V Turbocharger Assembly is designed for high-performance heavy-duty diesel engines used in long-haul transportation, construction equipment, mining operations, and industrial applications. Manufactured to OEM replacement standards, it delivers enhanced airflow efficiency, improved fuel economy, and increased engine power under demanding operating conditions.
Designed for ISX15 and QSX15 diesel engines, the HE551V adopts advanced variable geometry turbocharger (VGT) technology to automatically adjust turbine vane positions according to engine speed and load conditions. This design significantly improves low-speed torque, reduces turbo lag, and ensures optimal boost pressure throughout the engine operating range.
Featuring a precision-balanced rotating assembly, electronically controlled actuator, and high-temperature-resistant turbine housing, the HE551V offers reliable performance and extended service life in continuous heavy-duty applications.
As a direct replacement turbocharger, the HE551V supports multiple OEM reference numbers and provides seamless compatibility with original engine systems.

Technical Specifications
| Item | Specification | Item | Specification | Item | Specification | Item | Specification |
| Product Name | Turbocharger Assembly | Model | HE551V | Turbo Type | Variable Geometry Turbocharger | Structure | Single Stage Radial Flow |
| OEM Number | 3796967 / 3796968 / 5354716 / 5354717 | Alternative Models | HE551VE / HE551WG | Engine Models | ISX15 / QSX15 | Displacement | 15.0L |
| Power Range | 450HP-600HP | Cooling Type | Oil Cooled | Fuel Type | Diesel | Bearing Type | Floating Bearing |
| Material | High Temperature Alloy Steel | Compressor Wheel | Billet Aluminum Alloy | Turbine Housing | High Silicon Molybdenum Iron | Actuation Type | Electronic Actuator |
| Weight | Approx. 32-38KG | Dimensions | OEM Standard | Application | Heavy Duty Trucks | Installation | Direct Replacement |
| Warranty | 12 Months | Packaging | Neutral Carton / Wooden Case | Origin | China | Quality Standard | OEM Replacement |
Vehicle Fitment
| Vehicle Brand | Compatible Models |
| FREIGHTLINER | Cascadia, Coronado, 122SD |
| KENWORTH | T680, T880, W990 |
| PETERBILT | 579, 389, 567 |
| INTERNATIONAL | LT Series, ProStar, LoneStar |
Payment & Shipping
| Category | Options |
| Payment Methods | T/T (Bank Transfer), PayPal, Western Union, MoneyGram, Visa, MasterCard, L/C (Letter of Credit), Alibaba Trade Assurance |
| Express Shipping | DHL, FedEx, UPS, TNT |
| Freight Shipping | Air Freight, Sea Freight, Railway Freight |
| Delivery Time | Express: 3-7 Working Days; Air Freight: 7-15 Days; Sea Freight: 20-45 Days |
| Shipping Coverage | Worldwide Shipping Available |
| Trade Terms | EXW, FOB, CFR, CIF, DDP |
Related Products Categories
| Section/System | Common Spare Parts |
| Cylinder Block & Cylinder Head | Cylinder Block, Cylinder Head, Cylinder Liner, Piston, Piston Ring, Cylinder Head Gasket |
| Crankshaft System | Crankshaft, Connecting Rod, Main Bearing, Connecting Rod Bearing, Thrust Washer |
| Valve Train | Intake Valve, Exhaust Valve, Camshaft, Rocker Arm, Valve Spring |
| Turbocharger System | Turbocharger, Turbo Repair Kit, Intercooler, Intake Pipe |
| Fuel System | Fuel Injector, Injector Nozzle, Fuel Pump, Fuel Filter |
| Cooling System | Water Pump, Thermostat, Radiator, Expansion Tank |
| Lubrication System | Oil Pump, Oil Filter, Oil Cooler, Oil Pan |
| Intake & Exhaust System | Air Filter, Air Cleaner Assembly, Exhaust Pipe, Muffler, DPF, SCR |
| Engine Electrical Parts | Starter Motor, Alternator, Sensors, Wiring Harness |
Transmission & Drivetrain Parts
| Section/System | Common Spare Parts |
| Clutch System | Clutch Disc, Pressure Plate, Release Bearing, Clutch Master Cylinder, Clutch Booster |
| Transmission System | Gearbox Assembly, Synchronizer, Gear Set, Bearing, Oil Seal, Shift Fork |
| PTO System | PTO Assembly, PTO Gear, PTO Pump, PTO Seal |
| Driveshaft System | Driveshaft Assembly, Universal Joint, Center Bearing, Slip Yoke |
| Differential System | Differential Assembly, Crown Wheel & Pinion, Differential Bearing, Repair Kit |
| Section/System | Common Spare Parts |
| Front Axle | Kingpin Kit, Steering Knuckle, Ball Joint, Tie Rod, Wheel Bearing |
| Rear Drive Axle | Axle Housing, Half Shaft, Differential Housing, Hub Bearing |
| Suspension System | Leaf Spring, Air Spring, Shock Absorber, Equalizer Beam, U-Bolt |
| Steering System | Steering Gearbox, Power Steering Pump, Drag Link, Steering Shaft |
| Brake System | Brake Drum, Brake Disc, Brake Pad, Brake Chamber, Slack Adjuster |
| Wheel Hub System | Wheel Hub, Wheel Bearing, Oil Seal, Wheel Bolt, Wheel Nut |
Cabin & Body Parts
| Section/System | Common Spare Parts |
| Cabin Assembly | Cabin Shell, Cabin Suspension, Cabin Lock, Cabin Mount |
| Dashboard System | Instrument Cluster, Dashboard Panel, Switch Assembly |
| Door System | Door Assembly, Door Lock, Door Handle, Window Regulator |
| Seat System | Driver Seat, Passenger Seat, Seat Shock Absorber |
| Air Conditioning System | AC Compressor, Condenser, Evaporator, Blower Motor |
| Electrical System | Headlamp, Tail Lamp, Fog Lamp, Wiring Harness, Relay |
| Mirror System | Rear View Mirror, Mirror Arm, Mirror Cover |
| Body Exterior Parts | Bumper, Grille, Fender, Mudguard, Step Panel |
