
Product Introduction
The WG9725520279 leaf spring seat (right side) is an important suspension mounting component used in SINOTRUK HOWO heavy-duty truck chassis systems. It serves as the mounting support between the leaf spring assembly and the truck frame, ensuring proper load transfer and suspension stability during vehicle operation.
This component helps secure the leaf spring pack in position while supporting axle alignment and absorbing road impact under heavy load conditions. It plays a key role in maintaining suspension balance, reducing vibration, and improving driving stability on rough roads, mining areas, and long-distance freight routes.
The spring seat is manufactured from high-strength ductile iron or forged steel material with reinforced structure design, providing excellent resistance to heavy loads, fatigue stress, and impact deformation. OEM-standard machining ensures precise installation and reliable compatibility with original chassis systems.
The WG9725520279 is widely used in HOWO heavy-duty trucks and compatible suspension systems. Each unit is tested for structural strength, dimensional accuracy, crack resistance, and fatigue durability before shipment.

Technical Specifications
| Item | Specification |
| Product Name | Leaf Spring Seat / Bracket |
| Part Number | WG9725520279 |
| Position | Right Side (R) |
| Application | Suspension / Chassis System |
| Vehicle Models | SINOTRUK HOWO 371 / HOWO A7 |
| Material | Ductile Iron / Forged Steel |
| Function | Leaf Spring Mounting & Load Transfer |
| Condition | New |
| OEM Standard | Yes |
| Quality Test | Load, Crack & Fatigue Tested |
| Origin | China |
| Packaging | Export Standard Wooden Box |
Vehicle Fitment
| Vehicle Brand | Compatible Models |
| SINOTRUK | HOWO 371 Dump Truck |
| SINOTRUK | HOWO A7 Tractor Truck |
| SINOTRUK | HOWO 6×4 / 8×4 Heavy Trucks |
| SHACMAN | F3000 / X3000 (compatible chassis setups) |
| FAW | J6P / JH6 (compatible chassis setups) |
| DONGFENG | KL Series (compatible chassis setups) |
Payment & Shipping
| Category | Options |
| Payment Methods | T/T, PayPal, Western Union, MoneyGram, Visa, MasterCard, L/C, Alibaba Trade Assurance |
| Shipping Methods | DHL, FedEx, UPS, TNT |
| Delivery Time | 3–7 Days (Express), 20–45 Days (Sea Freight) |
| Trade Terms | EXW, FOB, CFR, CIF, DDP |
| Shipping Scope | Worldwide Shipping Available |
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 Booster |
| Gearbox System | Gearbox Assembly, Synchronizer, Gear Set, Bearing, Oil Seal, Shift Fork |
| Differential System | Differential Assembly, Crown Wheel & Pinion, Differential Bearing, Repair Kit |
| Driveshaft System | Driveshaft Assembly, Universal Joint, Center Bearing, Slip Yoke |
| Section/System | Common Spare Parts |
| Front Axle | Kingpin Kit, Steering Knuckle, Tie Rod, Wheel Bearing |
| Rear Axle | Axle Housing, Half Shaft, Differential Housing, Hub Bearing |
| Suspension System | Leaf Spring, Shock Absorber, Air Spring, U-Bolt, Equalizer Beam |
| Steering System | Steering Gearbox, Drag Link, Power Steering Pump, Steering Shaft |
| Brake System | Brake Chamber, Brake Servo, Brake Valve, Slack Adjuster |
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 |
