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 dark 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 WG1642440087 for Sinotruk HOWO Heavy-Duty Trucks

When your heavy-duty truck hits the road, every bump and pothole puts immense stress on the suspension system. The Rear Shock Absorber WG1642440087 is engineered to handle exactly that kind of punishment. Designed as a direct-fit replacement for Sinotruk HOWO trucks, this hydraulic damping component delivers consistent ride stability, protects your cargo, and extends the lifespan of surrounding suspension parts. Whether you’re managing a fleet or sourcing parts for your workshop, this genuine-spec rear shock absorber keeps your trucks running smoothly — and your maintenance costs predictable.

At Mettlead, we supply this part directly from our factory in China, which means you get competitive pricing without sacrificing quality. As a trusted global supplier of Sinotruk truck parts and other leading Chinese truck brands, we understand what procurement managers need: the right part, at the right price, delivered on time.

Key Features and Benefits of the WG1642440087 Rear Shock Absorber

This isn’t just another shock absorber sitting on a shelf. Every design detail of the WG1642440087 serves a specific purpose in your truck’s rear suspension system. Here’s what makes it stand out:

• Hydraulic Damping Technology — Provides progressive resistance to vertical movement, effectively absorbing road vibrations and preventing chassis bounce under heavy loads.
• Integrated Helical Coil Spring — The built-in coil spring works in tandem with the hydraulic cylinder to support axle weight and maintain optimal ride height, even when fully loaded.
• Durable Cylindrical Steel Body — Constructed from high-strength steel to withstand the repetitive stress cycles common in long-haul and off-road applications.
• Dark Gray Anti-Corrosion Coating — A specialized surface treatment protects against rust, road salt, and moisture exposure, significantly extending service life in harsh environments.
• Metal Bushings at Both Ends — Precision-machined pivot connection bushings ensure a secure, rattle-free mounting to the truck frame and rear axle assembly.
• Barcode Label for Traceability — Each unit is individually labeled for easy identification, inventory management, and quality traceability throughout the supply chain.
• OEM-Spec Direct Replacement — Matches the original factory dimensions and performance specifications, so installation is straightforward with no modifications required.

In other words, this shock absorber doesn’t just dampen — it protects your entire rear suspension system from premature wear. That translates directly into lower maintenance frequency and reduced downtime for your fleet.

Technical Specifications — WG1642440087 Rear Shock Absorber

Accurate specifications matter when you’re sourcing parts across borders. Below you’ll find the detailed parameters for this Sinotruk rear shock absorber:

Need to cross-reference this part number with your existing inventory system? Our team can provide additional dimensional data and compatibility confirmation upon request. Simply contact us with your vehicle model details.

Application Scenarios — Where the WG1642440087 Fits

Understanding exactly where and when this rear shock absorber is needed helps you plan procurement more effectively. Here are the primary application scenarios:

Compatible Vehicle Models

The WG1642440087 rear shock absorber is specifically designed for Sinotruk HOWO heavy-duty trucks. It fits various HOWO models equipped with the standard rear suspension configuration, including tractor units, dump trucks, and cargo trucks within the HOWO family. For a broader selection of compatible components, explore our full range of Sinotruk HOWO truck parts and spare parts.

System Position

This component installs in the rear suspension system of the truck chassis. It connects between the vehicle frame and the rear axle assembly via its metal bushing pivot points. You can find more related components in our chassis system parts category.

When to Replace

Rear shock absorbers don’t last forever, especially on heavy-duty trucks that carry substantial loads over long distances. You should consider replacement when you notice:

• Excessive bouncing or swaying of the rear axle after hitting bumps
• Visible oil leakage from the shock absorber body
• Uneven tire wear on the rear axle
• Cracked or collapsed coil spring
• Worn or deteriorated mounting bushings
• Increased braking distance due to poor rear-end stability
• Unusual clunking or knocking noises from the rear suspension

Replacing a failed rear shock absorber promptly prevents cascading damage to leaf springs, U-bolts, axle housings, and frame mounts — saving you significantly more in the long run.

OEM/ODM Capabilities — Tailored to Your Business Needs

As a procurement manager, you likely need more than just a single part. You need a supply partner who can adapt to your specific business requirements. Here’s what Mettlead brings to the table:

• White-Label Packaging — We offer custom packaging solutions with your own branding, allowing you to resell under your company name without revealing the source.
• Custom Packaging Options — Whether you need individual retail boxes, bulk export crating, or specific labeling requirements, we accommodate your packaging specifications.
• Strict Quality Control — Every WG1642440087 shock absorber undergoes rigorous inspection before shipment, including dimensional verification, surface coating integrity checks, and hydraulic seal testing.
• Factory-Direct Pricing — By sourcing directly from our manufacturing base in China, you eliminate middlemen and enjoy more competitive unit costs — especially on volume orders.
• Comprehensive Parts Range — Beyond shock absorbers, we supply a full catalog of parts for Sinotruk, SITRAK, SHACMAN, FAW, Weichai, Dongfeng, and Foton trucks. One supplier, one shipment, simplified logistics.
• Flexible Payment Methods — We support multiple secure payment channels to accommodate international transactions, making cross-border procurement hassle-free.
• Factory Visits Welcome — We encourage prospective partners to visit our facilities in China for firsthand quality verification and relationship building.

In short, whether you need 10 units or 10,000, Mettlead scales with your demand while maintaining consistent quality and lead times.

Frequently Asked Questions — WG1642440087 Rear Shock Absorber

What trucks does the WG1642440087 rear shock absorber fit?

This rear shock absorber is designed specifically for Sinotruk HOWO heavy-duty trucks. It fits models that use the OEM part number WG1642440087 in their rear suspension system. If you’re unsure about compatibility with your specific truck model, send us your VIN or chassis number and we’ll confirm the fitment for you.

Is this shock absorber an OEM original or aftermarket replacement?

This is an OEM-equivalent aftermarket replacement manufactured to match the original factory specifications — including dimensions, material grade, damping performance, and mounting configuration. It installs identically to the original part without any modifications.

How long does the WG1642440087 rear shock absorber typically last?

Under normal operating conditions, a quality rear shock absorber for heavy-duty trucks typically lasts between 80,000 to 150,000 kilometers. However, actual lifespan depends heavily on load weight, road conditions, and driving habits. Regular inspection during routine maintenance helps catch early signs of wear before complete failure occurs.

Can I replace just one rear shock absorber, or should I replace both sides?

While it’s technically possible to replace only one side, we strongly recommend replacing rear shock absorbers in pairs. When one side is new and the other is worn, the uneven damping creates asymmetric load distribution, which accelerates wear on the new unit and can cause handling instability — particularly dangerous for heavy-duty trucks carrying full loads.

What causes a rear shock absorber to fail prematurely?

The most common causes of premature failure include consistent overloading beyond rated capacity, frequent travel on severely damaged roads, contamination of hydraulic seals by mud or debris, and corrosion from road salt or chemical exposure. Additionally, worn mounting bushings that aren’t replaced during shock absorber installation can transfer excessive vibration and shorten the new unit’s lifespan.

How can I tell if the integrated coil spring needs replacement too?

Inspect the coil spring for visible cracks, deformation, or uneven coil spacing. If the truck sits noticeably lower on one side, or if the spring shows surface pitting and rust penetration beyond the coating, it should be replaced. Since the WG1642440087 features an integrated coil spring design, the entire assembly is replaced as one unit — simplifying the repair process.

Ready to Source Your WG1642440087 Rear Shock Absorbers?

Getting the right parts at the right price shouldn’t be complicated. Whether you need a sample order to verify quality or you’re ready to place a bulk purchase for your fleet, our team is standing by to provide pricing, lead times, and shipping options tailored to your location.

Here’s how to get started:

1. Send us your inquiry with the quantity you need and your delivery destination.
2. Receive a detailed quotation within 24 hours — including FOB/CIF pricing options.
3. Confirm your order and choose your preferred payment method.
4. We handle quality inspection, packaging, and export logistics.

Contact us today to request a quote for the WG1642440087 Rear Shock Absorber or any other Sinotruk HOWO suspension parts you need. Let’s keep your trucks on the road where they belong.