The Sinotruk HOWO Front Leaf Spring Assembly (Part Number: WG9731520041) is a critical suspension component engineered for Sinotruk HOWO 6×4 and 8×4 heavy-duty trucks (including HOWO 371 and 336 models).Designed to withstand extreme loads and rough terrain, this leaf spring assembly ensures optimal vehicle stability, ride comfort, and load-bearing capacity.

As a leading supplier of Sinotruk spare parts, we provide OEM-quality suspension solutions that match original factory specifications. This assembly is manufactured from premium alloy spring steel, offering superior fatigue resistance and elasticity compared to standard aftermarket alternatives.

Technical Specifications

Part Number: WG9731520041
Product Name: Front Leaf Spring Assembly / Multi-Leaf Spring
Applicable Vehicle: Sinotruk HOWO Heavy Dump Trucks, Tractor Trucks (336HP, 371HP, 420HP)
Position: Front Axle (Left/Right compatible in standard configurations)
Material: 60Si2Mn / 50CrV4 (High-grade Spring Steel)
Number of Leaves: 11 Leaves (Standard Configuration)
Dimensions:
- Width: 90 mm
- Thickness: 14 mm (Main Leaf)
- Arc Height: Precision cambered for standard ride height
Hardness: HRC 42-49 (Heat treated for maximum durability)
Surface Treatment: Shot peening (to reduce stress corrosion) and anti-rust painting
Weight: Approx. 85kg – 95kg (varies by specific sub-model pack)

Why Choose Us:

“We are your one-stop shop for all Sinotruk spare parts. From suspension systems like the WG9731520041 to engine components, we ensure global delivery and authentic quality.