
Product Introduction
The Power Steering Gear Box WG9725478118 is a critical steering system component designed for SINOTRUK HOWO heavy-duty trucks. It converts steering wheel input into controlled movement of the steering linkage, ensuring smooth vehicle handling, accurate steering response, and driving safety under various operating conditions.
Manufactured according to OEM standards, this steering gearbox features a reinforced housing, precision-machined internal gears, and durable sealing components. It is designed to withstand heavy loads, rough road conditions, and long operating hours commonly encountered in logistics transportation, construction projects, and mining operations.
The WG9725478118 steering gearbox is widely used in HOWO, HOWO A7, HOWO T7H, HOWO TX, and other heavy-duty truck platforms. It is an ideal replacement solution for fleet maintenance, truck repair workshops, distributors, and aftermarket truck parts suppliers.

Technical Specifications
| Item | Specification | Item | Specification |
| Product Name | Power Steering Gear Box | Model | WG9725478118 |
| Part Number | WG9725478118 | OEM Number | WG9725478118 |
| Product Type | Steering Gear Assembly | Steering Type | Hydraulic Power Steering |
| Application | Heavy Duty Truck Steering System | Vehicle Type | Tractor Truck / Cargo Truck / Dump Truck |
| Housing Material | High Strength Cast Iron | Internal Components | Precision Machined Steel Gears |
| Mounting Position | Front Steering System | Function | Steering Force Transmission |
| Operating Mode | Hydraulic Assisted Steering | Performance | High Steering Accuracy |
| Condition | Brand New | Quality Standard | OEM Replacement |
| Warranty | 12 Months | Packaging | Export Standard Packaging |
| Origin | China | Availability | In Stock |
Vehicle Fitment
| Vehicle Brand | Compatible Models |
| SINOTRUK HOWO | HOWO, HOWO A7, HOWO T7H, HOWO TX, HOWO MAX |
| SINOTRUK SITRAK | C5H, C7H, G7 |
| SHACMAN | F2000, F3000, X3000, X5000, H3000 |
| FAW JIEFANG | J5P, J6P, J7 |
| DONGFENG | Tianlong, Tianjin KR, KL, GX |
| FOTON AUMAN | ETX, GTL, EST, EST-A |
| BEIBEN | NG80, V3 |
| VOLVO | FH, FH12, FH13, FH16, FM, FMX |
| SCANIA | P-Series, G-Series, R-Series, S-Series |
| MERCEDES-BENZ | Actros, Arocs, Axor, Atego |
| MAN | TGX, TGS, TGM, TGL |
| DAF | XF, XG, XG+, CF, LF |
| IVECO | Stralis, Trakker, S-Way |
| RENAULT TRUCKS | Magnum, Premium, T-Series, K-Series |
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
Engine Parts System
| 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 |
Chassis & Suspension Parts
| 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 |
