Rear Leaf Spring Assy WG9725520286 Sinotruk
| Product Name | Rear Leaf Spring Assy |
| Product Number | WG9725520286 |
| MOQ | 1 |
| Warranty period | 3 Months |
| Package | Carton |
| Application | Sinotruk |
| Original | China |
Product Description
Product Introduction
This rear leaf spring assembly is a multi-leaf, progressive-rate suspension component designed for heavy-duty trucks. It consists of multiple high-strength steel leaves of graduated lengths, stacked and clamped together to form a curved, load-bearing structure. The entire assembly is finished with a dark gray anti-corrosion coating, and the leaves are secured by center bolts and clamps to maintain alignment and structural integrity.
Performance
Manufactured from premium-grade spring steel (e.g., 60Si2Mn) and subjected to controlled heat treatment, this assembly delivers exceptional tensile strength, fatigue resistance, and consistent spring rate. It is engineered to withstand the extreme dynamic loads, impacts, and torsional forces encountered in heavy-duty operation, maintaining its structural integrity in temperatures ranging from -40°C to 120°C. The anti-corrosion coating provides superior protection against rust, salt spray, and chemical exposure, ensuring long-term durability in diverse operating environments. The progressive-rate design offers a smooth ride under light loads and increased stiffness under heavy loads, optimizing both comfort and load-carrying capacity.
Core Function
Serves as the primary load-bearing and suspension component for the rear axle, supporting the vehicle’s weight and providing a smooth, stable ride.
Absorbs and dissipates road impacts and vibrations, reducing stress on chassis and suspension components and extending their service life.
Maintains proper ride height and suspension geometry, ensuring consistent vehicle handling and stability, especially under heavy loads or during cornering, braking, and acceleration.
OEM-Grade Sinotruk Rear Leaf Spring Assembly — Engineered for Maximum Load Capacity and Durability
When your fleet depends on reliable suspension performance under extreme payloads, the Mettlead Rear Leaf Spring Assy WG9725520286 delivers OEM-equivalent strength at a competitive factory-direct price. Designed as a direct replacement for Sinotruk HOWO heavy-duty trucks, this multi-leaf progressive-rate spring assembly is built from high-strength alloy steel, heat-treated and shot-peened for superior fatigue resistance across hundreds of thousands of kilometers.
Whether you manage a parts distribution network, operate a truck fleet, or supply aftermarket components across Africa, Southeast Asia, or the Middle East, this rear leaf spring assembly offers the quality assurance, pricing advantage, and delivery reliability that procurement managers demand.
Features and Benefits of the WG9725520286 Sinotruk Rear Leaf Spring Assy
Superior Load-Bearing Performance
- Multi-leaf progressive-rate design — Graduated leaf lengths distribute stress evenly, providing a smooth ride under light loads and firm support under full payload capacity.
- High-strength spring steel construction — Each leaf is manufactured from 60Si2Mn or equivalent alloy steel, quenched and tempered to achieve optimal hardness (HRC 44–50) and elasticity.
- Center bolt and clamp alignment system — Maintains precise leaf positioning under dynamic road conditions, preventing lateral shift and premature wear.
Extended Service Life
- Dark gray anti-corrosion coating — Electrophoretic or powder-coated finish resists moisture, road salt, and chemical exposure in harsh operating environments.
- Shot-peened leaf surfaces — Compressive residual stress on the surface layer significantly improves fatigue life and crack resistance.
- Precision-ground contact surfaces — Reduces inter-leaf friction, minimizing noise and extending assembly longevity.
Direct OEM Replacement
- Exact fitment for Sinotruk HOWO series — Bolt-on installation with no modifications required, matching OEM part number WG9725520286 specifications.
- Dimensionally verified — Every batch undergoes CMM inspection to ensure arc height, free camber, and eye-to-eye length meet factory tolerances.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | WG9725520286 |
| Application | Sinotruk HOWO Heavy-Duty Trucks (Rear Axle) |
| Type | Multi-Leaf Progressive-Rate Spring Assembly |
| Material | 60Si2Mn High-Strength Alloy Spring Steel |
| Surface Treatment | Dark Gray Anti-Corrosion Coating (Electrophoretic / Powder Coat) |
| Hardness | HRC 44–50 |
| Fastening | Center Bolt + U-Bolt Clamps |
| Quality Standard | OEM Equivalent, ISO-Compliant Manufacturing |
| Packaging | Standard Export Packing / Custom White-Label Available |
| MOQ | Contact for details |
| Lead Time | 7–20 days (depending on order volume) |
| Origin | China |
OEM/ODM Capability — White-Label and Custom Packaging Solutions
Mettlead serves as a trusted manufacturing partner for distributors and fleet operators who need branded or private-label truck suspension components. Our production facility supports flexible order configurations tailored to your market requirements.
What We Offer
- White-label packaging — Your brand, your logo, your part numbers printed on boxes and labels. We handle production; you own the customer relationship.
- Custom specifications — Need a modified leaf count, adjusted camber, or alternative coating? Our engineering team works with your technical requirements to deliver purpose-built assemblies.
- Strict quality control — Every rear leaf spring assy undergoes raw material inspection, heat treatment verification, hardness testing, dimensional measurement, and load-deflection testing before shipment.
- Flexible MOQ — We accommodate both trial orders for market testing and bulk procurement for established distribution channels.
- Export-ready documentation — Packing lists, commercial invoices, certificates of origin, and material test reports provided with every shipment.
Frequently Asked Questions — Sinotruk Rear Leaf Spring Assy WG9725520286
Is this rear leaf spring assembly an exact replacement for the original Sinotruk part?
Yes. The Mettlead WG9725520286 rear leaf spring assy is manufactured to OEM specifications, ensuring direct bolt-on fitment for Sinotruk HOWO heavy-duty trucks without any modification.
What quality control measures does Mettlead apply?
Each batch undergoes a multi-stage inspection process including incoming material analysis, heat treatment curve monitoring, Rockwell hardness testing, dimensional verification via CMM, and full-load deflection testing to confirm rated performance.
Can I order with my own brand packaging?
Absolutely. Mettlead offers complete white-label and custom packaging services. Provide your artwork and branding guidelines, and we produce retail-ready or wholesale-ready packaging under your brand identity.
What is the typical lead time for bulk orders?
Standard lead time ranges from 7 to 20 working days depending on order quantity and customization requirements. Stock items for popular Sinotruk models may ship within 7 days.
Which markets do you currently supply?
Mettlead exports Sinotruk rear leaf spring assemblies and other Chinese brand truck parts to distributors and fleet operators across Africa, the Middle East, Southeast Asia, Central Asia, and South America.
Do you provide material test certificates?
Yes. We supply material test reports, hardness certificates, and dimensional inspection records upon request with every shipment.
Request Your Quote — Get Factory-Direct Pricing Today
Ready to secure reliable, cost-effective Sinotruk rear leaf spring assemblies for your inventory or fleet? Mettlead delivers OEM-quality suspension components with the pricing, lead times, and packaging flexibility that professional buyers expect.
Send us your inquiry now and receive:
- Competitive unit pricing based on your order volume
- Confirmed lead time and shipping schedule
- Custom packaging and branding options
- Technical data sheets and quality certificates
Contact Mettlead today — Fill out the inquiry form or reach out to our sales team directly. Let us show you why hundreds of B2B buyers trust Mettlead as their go-to source for Chinese brand truck parts.
