Product Introduction

Structure

This leaf spring single plate is a precision-formed high-strength steel component designed for heavy-duty truck leaf spring suspension systems. It features a long, flat profile with a slight camber, precision-cut edges, and a central mounting hole for installation. The surface is finished with a dark anti-corrosion coating, and marked with specifications (e.g., “25X90”) and part numbers for easy identification and traceability.

Performance

Manufactured from premium-grade spring steel (e.g., 60Si2Mn) and subjected to controlled heat treatment, this single plate delivers exceptional tensile strength, fatigue resistance, and consistent spring rate. It is designed 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.

Core Function

1. Serves as a primary load-bearing element within the leaf spring assembly, contributing to the overall spring rate and load capacity of the suspension system.

2. Works in conjunction with other leaf plates to absorb and dissipate road impacts and vibrations, ensuring a smooth, stable ride.

3. Maintains proper suspension geometry, preventing excessive deflection and ensuring consistent vehicle handling and stability.

4. Enhances vehicle safety and durability by providing a robust, reliable load-bearing solution that can withstand the extreme conditions of heavy-duty operation, reducing the risk of component failure and improving overall reliability.

Leaf Spring Single Plate WG963820008-1 Sinotruk — OEM-Quality Single Leaf Spring for Heavy-Duty Trucks

When your fleet depends on reliable suspension, every component matters. The Leaf Spring Single Plate WG963820008-1 Sinotruk is engineered to deliver consistent shock absorption and superior load-bearing capacity under the most demanding operating conditions. As a factory-direct supplier, Mettlead brings you this genuine-spec single leaf spring at competitive pricing — so you can keep your vehicles running without overspending on maintenance parts.

Whether you are managing a logistics fleet or sourcing replacement suspension parts in bulk, this single plate leaf spring offers the durability and dimensional accuracy you need. Moreover, with our streamlined supply chain from China, you will enjoy shorter lead times and flexible order quantities tailored to your procurement cycle.

Key Features and Benefits of the WG963820008-1 Leaf Spring

Choosing the right leaf spring is not just about fitment — it is about long-term reliability and total cost of ownership. Here is what sets this Sinotruk single plate leaf spring apart:

• Precision OEM Fitment: Manufactured to match original Sinotruk specifications, ensuring seamless installation without modifications.
• High-Strength Spring Steel: Crafted from premium alloy spring steel that resists fatigue, cracking, and permanent deformation even under prolonged heavy loads.
• Effective Shock Absorption: The single plate design provides optimized cushioning, reducing vibration transfer to the chassis and protecting cargo during transit.
• Superior Load-Bearing Capacity: Engineered to support the full weight of the vehicle body and payload, maintaining ride height and suspension geometry over time.
• Corrosion-Resistant Surface Treatment: Shot-peened and coated to withstand harsh road conditions, extending service life in humid, dusty, or saline environments.
• Cost-Effective Factory-Direct Pricing: By sourcing directly from Mettlead, you eliminate middlemen and reduce your per-unit procurement cost significantly.

In addition to these features, every batch undergoes strict quality control — including hardness testing, dimensional inspection, and fatigue life verification — before it leaves our facility.

Application Scenarios — Where This Leaf Spring Performs Best

The Leaf Spring Single Plate WG963820008-1 is specifically designed for Sinotruk heavy-duty vehicles. As a single plate leaf spring, it serves a critical role in the rear suspension system. Here is how it works in practice:

• Compatible Vehicles: Fits Sinotruk HOWO and SITRAK series heavy trucks with matching rear axle suspension configurations.
• Primary Function: Acts as a single-leaf spring element that absorbs road shocks, dampens vibrations, and bears the vehicle body load.
• Typical Use Cases: Long-haul freight transport, construction site logistics, mining vehicle fleets, and any heavy-duty application where consistent suspension performance is non-negotiable.
• Replacement Indicator: Recommended for replacement when you notice sagging ride height, uneven tire wear, cracking on the leaf surface, or diminished ride comfort under load.

For a broader selection of rear axle suspension components, feel free to explore our Rear Axle Parts Category.

Technical Specifications

Accurate specifications matter when you are matching parts to your fleet. The following table outlines the key parameters for this Sinotruk leaf spring single plate:

Note: If you require exact dimensional measurements (length, width, thickness, arc height) for cross-referencing purposes, please contact our team with your vehicle model and VIN for confirmation.

OEM/ODM Capability — Flexible Solutions for Your Brand

At Mettlead, we understand that different markets have different requirements. That is why we offer more than just off-the-shelf parts. Our manufacturing flexibility allows us to support your business in several ways:

• White-Label Packaging: Receive products in neutral packaging, ready for your own branding and distribution channels.
• Custom Packaging: We can produce parts with your brand logo, part labels, and custom box designs to strengthen your market presence.
• Bulk Order Support: Whether you need 50 pieces or 5,000, our production capacity scales with your demand — and pricing improves with volume.
• Quality Documentation: We provide inspection reports, material certificates, and packing lists to support your import compliance and inventory management.

Furthermore, if you stock multiple Sinotruk suspension components, you can consolidate your orders with us to save on shipping costs. Browse our full Sinotruk HOWO Truck Parts catalog or visit our comprehensive Sinotruk Truck Parts page to find everything in one place.

Frequently Asked Questions — Leaf Spring Single Plate WG963820008-1

What vehicles does the WG963820008-1 leaf spring fit?

This single plate leaf spring is designed to fit Sinotruk heavy-duty vehicles, including select HOWO and SITRAK models that use the WG963820008-1 part number in their rear suspension assembly. To confirm exact compatibility with your truck model, we recommend verifying the OEM part number against your vehicle documentation.

What is the difference between a single plate leaf spring and a multi-leaf spring pack?

A single plate leaf spring, like the WG963820008-1, uses one specially profiled steel plate to perform the suspension function. Compared to traditional multi-leaf packs, it typically offers a smoother ride, reduced weight, and lower inter-leaf friction — which means less maintenance over time. However, it is designed for specific load ratings and vehicle configurations, so it should only replace parts with the same OEM specification.

How can I tell when this leaf spring needs replacement?

There are several signs that indicate wear or failure. Look for visible cracks or fractures on the spring surface, a noticeable sag in ride height on one side, increased cabin vibration under load, or uneven tire wear on the rear axle. If you observe any of these symptoms, timely replacement will prevent further damage to your suspension system.

Is this leaf spring made from the same material as the original Sinotruk part?

Yes. The WG963820008-1 single plate leaf spring is manufactured using high-strength alloy spring steel — typically 60Si2Mn or equivalent grades — which matches the original equipment material specification. Additionally, it undergoes heat treatment and shot peening to achieve the correct hardness and fatigue resistance.

Can I order a sample before placing a bulk order?

Absolutely. We encourage procurement managers to order samples for fitment testing and quality evaluation before committing to larger quantities. Simply reach out through our contact page and specify the part number along with your required quantity.

How should I store leaf springs before installation?

To maintain optimal condition, store the leaf spring in a dry, ventilated environment away from direct moisture or chemical exposure. Keep it laid flat or properly supported to prevent deformation. If stored for extended periods, periodically inspect the anti-corrosion coating for any damage.

Ready to Source Your Sinotruk Leaf Spring? Let’s Talk.

Getting the right parts at the right price should not be complicated. Whether you need a single sample or a container load of Leaf Spring Single Plate WG963820008-1 Sinotruk components, our team is ready to provide a fast quotation with clear lead times.

Here is what you can expect when you work with Mettlead:

• Factory-direct pricing with no hidden costs
• Fast, reliable delivery with full shipment tracking
• Flexible and secure payment options
• Professional support from a team that knows Chinese truck parts inside and out

Contact Us Now to request your quote, ask technical questions, or arrange a factory visit. We are here to make your procurement process smoother — one quality part at a time.