Product Introduction

This rear shock absorber is a hydraulic damping component with an integrated coil spring, designed for heavy-duty truck suspension systems. It features a cylindrical steel body with a light gray anti-corrosion coating, an integrated helical coil spring, and both ends are fitted with metal bushings for pivot connection. A barcode label is affixed to the body for easy identification and traceability.

Performance

Manufactured with precision-machined components and high-quality hydraulic fluid, this shock absorber delivers consistent damping performance, vibration isolation, and impact absorption. It operates reliably in temperatures ranging from -40°C to 120°C, resisting degradation from road contaminants and harsh operating conditions. The integrated coil spring provides additional load support and progressive stiffness, effectively controlling suspension movement and improving ride stability.

Core Function

1. Serves as a critical damping and load-supporting component in the rear suspension system, absorbing and dissipating road impacts and vibrations to ensure a smooth, stable ride.

2. Controls excessive suspension movement, preventing wheel hop and maintaining tire contact with the road surface for improved handling and safety.

3. Reduces stress on chassis and suspension components, extending their service life by minimizing fatigue and wear.

4. Enhances overall vehicle stability and control, especially under heavy loads or during cornering, braking, and acceleration.

Rear Shock Absorber WG1642440381 Sinotruk – Heavy-Duty Truck Suspension Damper

When your heavy-duty truck starts bouncing excessively or the ride becomes noticeably rougher, chances are the rear shock absorber has reached the end of its service life. The Rear Shock Absorber WG1642440381 Sinotruk is a precision-engineered hydraulic damping component that restores optimal suspension performance to your vehicle. Manufactured to meet OEM specifications, this shock absorber features an integrated coil spring design, a durable anti-corrosion coating, and robust metal bushings at both mounting points. As a result, it delivers reliable damping force and consistent ride stability under the most demanding operating conditions.

At Mettlead, we supply this genuine-equivalent rear shock absorber directly from our factory in China, which means you get competitive pricing without compromising on quality. Whether you are a fleet maintenance manager or an independent parts distributor, this component is ready to ship worldwide with flexible payment options and dependable logistics support.

Key Features and Benefits of Rear Shock Absorber WG1642440381

Understanding what sets this Sinotruk rear shock absorber apart helps you make a confident purchasing decision. Here is what you can expect from this component:

• Hydraulic Damping Technology: The internal hydraulic mechanism provides progressive resistance to suspension movement, effectively absorbing road impacts and reducing chassis vibration during loaded hauls.
• Integrated Helical Coil Spring: Unlike standalone dampers, this unit combines a coil spring with the shock body. Consequently, it supports heavy axle loads while maintaining proper ride height throughout the suspension travel.
• Anti-Corrosion Coating: A light gray protective finish covers the cylindrical steel body, shielding it from moisture, road salt, and chemical exposure. This extends service life significantly, even in harsh climates.
• Heavy-Duty Metal Bushings: Both upper and lower mounting eyes feature precision-machined metal bushings that enable smooth pivot connections. Moreover, these bushings resist wear and maintain tight tolerances over thousands of operating hours.
• Barcode Identification Label: Each unit carries a factory-affixed barcode label, making inventory management, traceability, and authenticity verification straightforward for warehouse teams.
• Direct OEM Replacement: Engineered as a drop-in replacement for the original WG1642440381 part number, this shock absorber installs without modifications, saving valuable workshop time.
• Strict Quality Control: Every unit undergoes rigorous testing for leak resistance, damping force consistency, and dimensional accuracy before leaving our facility.

In addition to these features, the Rear Shock Absorber WG1642440381 Sinotruk is designed to handle the repetitive stress cycles common in long-haul trucking and construction site operations. Therefore, it represents a cost-effective solution for maintaining your fleet’s suspension integrity.

Technical Specifications

Below you will find the detailed specifications for this Sinotruk rear shock absorber. These parameters help you verify compatibility and plan your procurement accurately:

Application Scenarios

The Rear Shock Absorber WG1642440381 serves a critical role in maintaining your truck’s ride quality and structural integrity. Here are the primary situations where this component is needed:

• Compatible Truck Models: This rear shock absorber is specifically designed for Sinotruk HOWO heavy-duty trucks. It fits seamlessly into the original rear suspension mounting points, ensuring proper alignment and load distribution.
• Rear Suspension System Maintenance: As part of the chassis suspension assembly, this damper works in conjunction with leaf springs, U-bolts, and axle components to control vertical movement and maintain tire contact with the road surface.
• Wear and Damage Replacement: Over time, hydraulic seals degrade, fluid leaks develop, and damping performance deteriorates. When you notice oil seepage on the shock body, excessive bouncing after bumps, or uneven tire wear, it is time to replace the rear shock absorber.
• Preventive Fleet Maintenance: For procurement managers overseeing large fleets, stocking the WG1642440381 ensures minimal downtime when scheduled maintenance intervals require suspension component replacement.

For more Sinotruk suspension and chassis components, browse our complete Sinotruk HOWO Truck Parts catalog or explore the full Chassis Parts Category for related suspension components.

OEM/ODM Capability

Mettlead understands that different markets have unique requirements. That is why we offer flexible customization options for the Rear Shock Absorber WG1642440381 and our entire product range:

• White-Label Packaging: We provide neutral packaging as standard, allowing you to resell under your own brand identity without revealing the source of supply.
• Custom Packaging Solutions: If your market demands branded boxes, custom labels, or specific packaging dimensions, our team accommodates these requirements with reasonable MOQs.
• Quality Certification: Each batch undergoes strict quality control procedures. Furthermore, we can provide inspection reports and test certificates upon request to satisfy your import compliance needs.
• Factory Direct Supply: By eliminating middlemen, we keep costs low while maintaining complete control over product consistency. Additionally, we welcome factory visits so you can verify our production capabilities firsthand.
• Comprehensive Parts Range: Beyond shock absorbers, we supply a full spectrum of parts for SINOTRUK, SITRAK, HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON trucks. Visit our Sinotruk Truck Parts page to explore the complete lineup.

Frequently Asked Questions (FAQ)

What are the signs that my Sinotruk rear shock absorber needs replacement?

Several symptoms indicate a failing rear shock absorber. Look for visible oil leaking from the shock body, excessive bouncing that continues after hitting a bump, uneven rear tire wear patterns, or noticeable instability when the truck is loaded. If you hear knocking or clunking sounds from the rear suspension during operation, the internal valving or bushings may have worn beyond their service limit.

Is the WG1642440381 shock absorber an exact fit for my HOWO truck?

Yes, the Rear Shock Absorber WG1642440381 is manufactured to match the original equipment dimensions and mounting specifications for Sinotruk HOWO heavy-duty trucks. It installs directly into the existing mounting brackets without any modifications required. However, we recommend confirming your vehicle’s specific model year and variant before ordering.

How does the integrated coil spring design benefit heavy-duty applications?

The integrated coil spring works together with the hydraulic damper to provide dual functionality in a single unit. The spring supports the static load and maintains ride height, while the hydraulic core controls the rate of compression and rebound. As a result, this combined design offers better load-bearing capacity and more consistent damping compared to a standalone shock absorber without a spring.

What is the expected service life of this rear shock absorber?

Under normal operating conditions, the WG1642440381 rear shock absorber typically performs reliably for extended periods. Nevertheless, actual lifespan varies depending on road conditions, load frequency, climate exposure, and maintenance practices. We recommend inspecting shock absorbers during regular service intervals and replacing them when damping performance noticeably declines.

Can I order this shock absorber in bulk for fleet maintenance?

Absolutely. Mettlead specializes in wholesale and bulk supply for fleet operators, distributors, and repair workshops. We offer competitive volume pricing, and our logistics team ensures fast, reliable delivery to your location. For bulk pricing and lead times, please contact us directly with your quantity requirements.

Does the anti-corrosion coating affect installation or performance?

Not at all. The light gray coating is specifically formulated to protect the steel body from environmental degradation without interfering with the shock’s travel or mounting interface. It remains bonded to the surface throughout the component’s service life, providing continuous protection against rust, road chemicals, and moisture ingress.

Get a Competitive Quote Today

Ready to secure reliable Rear Shock Absorber WG1642440381 Sinotruk units for your inventory or fleet? Mettlead delivers factory-direct pricing, fast global shipping, and dedicated support for every order. Whether you need a single piece or a container load, our team is standing by to assist you.

Take the next step:

• Request a free quotation with your quantity and delivery destination
• Ask about volume discounts for bulk orders
• Inquire about custom packaging or white-label options
• Schedule a factory visit to inspect our quality processes

Contact Us Now to get your personalized quote and lead time for the WG1642440381 rear shock absorber. Our team typically responds within 24 hours with competitive pricing tailored to your market.