Product Introduction

Structure

This leaf spring bushing is a rubber-metal composite component designed for heavy-duty truck leaf spring suspension systems. It consists of an inner and outer steel sleeve, with a high-density rubber layer vulcanized between them. The rubber core is engineered to absorb vibration and reduce friction, while the steel sleeves provide structural rigidity and ensure a precise fit within the spring eye and mounting bracket.

Performance

Manufactured from high-grade natural rubber or synthetic elastomer (such as NR or SBR) and precision-machined steel sleeves, this bushing delivers exceptional vibration damping, load-bearing capacity, and resistance to aging and abrasion. It operates reliably in temperatures ranging from -40°C to 120°C, resisting degradation from road contaminants, oil, and UV exposure. The rubber core provides progressive stiffness, effectively isolating vibrations and reducing noise, while the steel sleeves ensure a secure, long-lasting connection.

Core Function

1. Serves as a critical pivot and vibration isolation component in leaf spring suspension systems, allowing controlled articulation of the spring while isolating chassis vibrations.

2. Absorbs and dampens vibrations generated by road impacts and suspension movement, reducing noise and improving driver comfort.

3. Maintains proper alignment of the leaf spring, preventing excessive movement and ensuring consistent suspension geometry.

4. Enhances vehicle safety and durability by protecting the leaf spring and associated components from premature wear and failure due to vibration and friction.

Leaf Spring Bushing WG9000520078 – Genuine Sinotruk Replacement Part

When your heavy-duty truck hits the road, every component works together to deliver a smooth, controlled ride. The Leaf Spring Bushing WG9000520078 plays a quiet but critical role in that system — absorbing shocks, reducing metal-on-metal friction, and extending the life of your suspension assembly. Designed specifically for Sinotruk HOWO heavy trucks, this bushing ensures your leaf spring operates at peak performance, even under the most demanding loads and road conditions.

At Mettlead, we supply this OEM-grade part directly from our factory in China, which means you get reliable quality at a competitive price — without the middleman markup. Whether you’re managing a fleet or stocking your parts warehouse, this is the kind of component that keeps downtime low and productivity high.

Key Features and Benefits of the WG9000520078 Leaf Spring Bushing

This isn’t just a rubber insert — it’s an engineered solution built to handle the punishing environment of heavy-truck suspension systems. Here’s what sets it apart:

• Precision OEM Fitment — Manufactured to match the exact dimensions and tolerances of the original Sinotruk specification, so installation is seamless and performance is guaranteed from day one.
• Superior Shock Absorption — The bushing acts as a buffer between the leaf spring and the chassis bracket, dampening vibrations and road impacts before they reach the frame.
• Friction Reduction — By isolating metal components, it minimizes wear on the leaf spring eye and shackle pin, significantly extending the service life of surrounding parts.
• High-Grade Material Composition — Constructed from wear-resistant rubber compound that withstands heat, oil exposure, and continuous compression cycles without premature degradation.
• Strict Quality Control — Every batch undergoes dimensional inspection and material hardness testing before it leaves our facility.
• Cost-Effective Maintenance — Replacing worn bushings on schedule prevents costly damage to leaf springs, shackle brackets, and frame mounting points.

Application Scenario: Where This Bushing Works

The Leaf Spring Bushing WG9000520078 is specifically engineered for the suspension system of Sinotruk heavy-duty vehicles, including HOWO series trucks commonly used in mining, construction, long-haul logistics, and municipal transport.

Installed at the leaf spring eye — where the spring connects to the frame bracket or shackle — this bushing serves three essential functions:

1. Cushioning and Shock Dampening — It absorbs vertical and lateral forces transmitted from the road surface, protecting the chassis from fatigue stress.
2. Reducing Component Friction — It prevents direct metal contact between the spring eye and the mounting pin, eliminating squeaks and reducing abrasive wear.
3. Maintaining Suspension Geometry — A properly fitted bushing keeps the leaf spring aligned, which directly affects steering stability and tire wear patterns.

In other words, when this small part wears out, you’ll feel it in the cab — and see it in your maintenance bills. Replacing it proactively is one of the smartest investments a fleet manager can make.

Technical Specifications

Need to verify fitment for your specific truck model? Feel free to contact us with your VIN or chassis number, and our team will confirm compatibility within 24 hours.

OEM and Custom Packaging Capabilities

We understand that different markets have different requirements. That’s why Mettlead offers flexible options to match your business model:

• White-Label Packaging — Ship parts under your own brand with custom labels, box designs, and documentation.
• Custom Packaging Solutions — Whether you need bulk packaging for workshop distribution or retail-ready blister packs, we adapt to your specifications.
• OEM-Equivalent Quality — Our leaf spring bushings are manufactured to the same dimensional and material standards as the original Sinotruk parts, ensuring drop-in compatibility.
• Consistent Supply Chain — As a factory-direct supplier, we maintain stable inventory levels and offer fast, reliable delivery to keep your shelves stocked.

Explore our full range of Sinotruk HOWO truck parts to see what else we can supply for your customers.

Frequently Asked Questions

What are the signs that a leaf spring bushing needs replacement?

The most common indicators include clunking or squeaking noises from the suspension during driving, uneven tire wear, visible cracking or deformation of the rubber bushing, and a noticeable looseness in the leaf spring assembly. If you notice the truck’s ride quality has deteriorated or the rear axle feels unstable under load, worn bushings are often the culprit.

Is the WG9000520078 bushing compatible with all Sinotruk models?

This part number is designed for specific Sinotruk HOWO heavy-duty truck models. However, since Sinotruk produces many variants, we always recommend confirming your exact chassis model before ordering. Simply send us your vehicle identification number, and we’ll verify fitment for you.

How does this bushing differ from aftermarket alternatives?

Our WG9000520078 bushing is manufactured to OEM specifications — meaning the inner diameter, outer diameter, length, and rubber hardness all match the original factory part. Many generic aftermarket bushings use lower-grade rubber compounds that deteriorate faster under heat and load. Ours are built to handle the real-world demands of heavy commercial vehicles.

What material is used, and how does it affect durability?

The bushing is made from a high-density, wear-resistant rubber compound specifically formulated to resist oil contamination, UV degradation, and repeated compression cycles. This material choice ensures the bushing maintains its elasticity and structural integrity over tens of thousands of kilometers, even in harsh operating environments.

Can I order this part in bulk with custom branding?

Absolutely. We offer white-label and custom packaging services for distributors and wholesalers who want to sell under their own brand. Minimum order quantities and lead times vary depending on your packaging requirements — reach out to our team for a tailored quote.

How should I store leaf spring bushings before installation?

Store them in a cool, dry environment away from direct sunlight, chemicals, and petroleum products. Rubber components can degrade if exposed to UV light or solvents for extended periods. Keeping them in their original packaging until installation is the best practice.

Browse More Sinotruk Parts and Chassis Components

The WG9000520078 leaf spring bushing is just one of thousands of parts we supply for Chinese heavy-duty trucks. Whether you need suspension components, brake system parts, or engine accessories, our catalog has you covered.

• Sinotruk HOWO Truck Parts – Full Brand Catalog
• Chassis System Parts – Suspension, Steering & More
• Sinotruk Parts – Complete Category Overview

Ready to Order? Let’s Talk.

Getting the right part at the right price shouldn’t be complicated. At Mettlead, we make it simple: factory-direct pricing, fast shipping, flexible payment options, and a team that actually knows these trucks inside and out.

Whether you need 10 pieces or 10,000, we’re ready to support your business. Send us your part number, quantity, and destination — and we’ll respond with a competitive quote within one business day.

Contact Mettlead Now → Get Your Free Quote Today

We also welcome factory visits — come see our quality control process firsthand and build a partnership you can trust.