Product Introduction

Structure

This shock absorber is a hydraulic twin-tube damping assembly, constructed from high-strength alloy steel. It features a precision-machined outer cylinder and a polished inner piston rod, both finished with a matte gray anti-corrosion coating. The assembly is equipped with two rubber bushings at each end, vulcanized to steel inner sleeves, which provide flexible, vibration-damping connection points for chassis and suspension attachment. The rod guide and seal assembly is precision-engineered to prevent fluid leakage and ensure smooth, consistent operation.

Performance

The hydraulic damping system is designed to deliver precise, progressive damping force, effectively absorbing and dissipating road impacts and vibrations. The high-grade hydraulic fluid and multi-lip seal design ensure reliable performance in temperatures ranging from -40°C to 120°C, while the alloy steel construction provides exceptional durability and resistance to fatigue. The rubber bushings are formulated from high-grade natural rubber, offering excellent vibration isolation and resistance to oil, chemicals, and ozone degradation.

Core Function

1. Dampens the oscillations of the suspension system, significantly improving ride quality and reducing driver fatigue by absorbing road impacts and vibrations.

2. Stabilizes the vehicle during cornering, braking, and acceleration, maintaining consistent tire contact with the road and enhancing handling and safety.

3. Protects the chassis and suspension components from premature wear and fatigue by dissipating the energy from road impacts.

4. Extends the service life of the suspension system and reduces maintenance costs by minimizing the transmission of stress and vibration to other components.

Shock Absorber WG9925680031 for Sinotruk Sitrak – Factory-Direct OEM Quality

Every kilometer of rough terrain puts relentless stress on your truck’s suspension system. The Shock Absorber WG9925680031 is purpose-engineered to tame those forces, delivering consistent damping performance that protects both your Sinotruk Sitrak heavy-duty truck and the cargo it carries. Sourced directly from Mettlead’s factory in China, this shock absorber meets OEM specifications while offering the competitive pricing and reliable supply chain that procurement managers demand.

Whether you’re restocking a fleet maintenance warehouse or sourcing replacement parts for distributor inventory, this component arrives quality-inspected, correctly packaged, and ready to perform from day one.

Key Features and Benefits of Shock Absorber WG9925680031

This isn’t just another aftermarket part sitting on a shelf. The WG9925680031 shock absorber is built to mirror the original equipment’s damping curve, which means your Sitrak trucks maintain ride stability, tire contact, and driver comfort across demanding operating conditions.

• OEM-Matched Damping Performance – Calibrated valve settings replicate the factory ride characteristics, so there’s no compromise after replacement.
• Heavy-Duty Construction – A hardened piston rod and multi-lip oil seals resist wear, corrosion, and fluid leakage even under extreme load cycles.
• Extended Service Life – High-grade hydraulic oil maintains viscosity stability across a wide temperature range (-40°C to +80°C), reducing premature fade.
• Direct Bolt-On Fitment – Mounting dimensions and eye-ring specifications match the original part exactly, eliminating modification and cutting installation time.
• Strict Quality Control – Every unit undergoes pressure testing and dimensional verification before leaving the production line.

In short, this shock absorber keeps your trucks on the road longer and your maintenance costs predictable. That’s a measurable return on every unit you purchase.

Application Scenario: Where This Shock Absorber Belongs

The WG9925680031 shock absorber is specifically designed for the Sinotruk Sitrak series of heavy-duty trucks. Its primary role sits within the chassis suspension system, where it absorbs and dissipates kinetic energy generated by road surface irregularities, braking forces, and load shifts.

Fitted Vehicle Range

• Sinotruk Sitrak C7H series tractor units
• Sinotruk Sitrak G7 series cargo trucks
• Sinotruk Sitrak heavy-duty construction and logistics vehicles

Functional Role in the Suspension System

Mounted between the chassis frame and the axle assembly, this shock absorber works in tandem with leaf springs or air suspension to cushion vertical oscillations. Without a properly functioning damper, excessive bouncing accelerates tire wear, loosens fasteners, stresses the frame, and compromises braking distance. Replacing worn shock absorbers on schedule is therefore not just a comfort decision — it’s a safety and cost-efficiency decision.

Looking for more Sitrak chassis and suspension components? Browse our full Chassis Parts Category or explore the complete Sitrak Heavy-Duty Parts range.

Technical Specifications

Accurate specifications matter when you’re cross-referencing parts for bulk procurement. The table below provides the verified parameters for the WG9925680031 shock absorber:

Note: Dimensions are reference values based on standard production batches. For exact measurements or custom requirements, please contact our technical team.

OEM and ODM Capabilities

Mettlead understands that different markets have different packaging, labeling, and branding requirements. That’s why we offer flexible OEM and ODM services tailored to your business model:

• White-Label Packaging – Receive shock absorbers in neutral packaging, ready for your own brand labels and retail presentation.
• Custom Packaging Design – We can produce units with your company logo, part numbering system, and market-specific compliance markings printed directly on the box.
• Bulk and Mixed-Order Flexibility – Combine this shock absorber with other Sitrak suspension and chassis parts in a single consolidated shipment to reduce freight costs.
• Quality Documentation – Receive inspection reports, material certificates, and test data sheets as needed for your import compliance.

Whether you’re building a private-label parts brand or simply need reliable supply at factory-direct pricing, our team adapts to your procurement workflow. We also welcome factory visits — come inspect our production lines and quality processes in person.

For a comprehensive overview of all available Sinotruk Sitrak components, visit our Sinotruk Sitrak Truck Parts Full Category Guide.

Frequently Asked Questions

What are the signs that a WG9925680031 shock absorber needs replacement?

The most common indicators include visible oil leakage around the piston rod seal, excessive body roll during cornering, uneven tire wear patterns, and a noticeable increase in cabin vibration. If the truck bounces more than once after hitting a bump, the damping capacity has likely degraded beyond acceptable limits.

Is this shock absorber compatible with both front and rear axle positions?

Yes, the WG9925680031 is used in multiple mounting positions on the Sitrak platform depending on the specific vehicle configuration. However, always verify the part number against your truck’s VIN or original parts catalog to confirm correct fitment for your exact model variant.

How does the twin-tube hydraulic design benefit heavy-duty applications?

A twin-tube construction provides a larger oil volume compared to mono-tube designs of similar external dimensions. This additional fluid capacity improves heat dissipation during sustained operation — critical for trucks running long hauls or operating on consistently rough surfaces where the damper cycles continuously.

What is the expected service life of this shock absorber under normal conditions?

Under standard highway and mixed-road operating conditions, a properly installed WG9925680031 typically delivers reliable performance for 80,000 to 120,000 km. However, severe-duty applications such as mining haul roads or heavily overloaded conditions may shorten this interval. Regular visual inspections during scheduled maintenance help catch early wear.

Can I order a sample before committing to a bulk purchase?

Absolutely. Mettlead supports sample orders so you can verify fitment, finish quality, and packaging before scaling up. Sample lead times are typically shorter than bulk production runs, allowing you to validate quickly and move to volume orders with confidence.

Ready to Secure Your Supply?

Competitive pricing, verified OEM-quality, and a streamlined ordering process — that’s what Mettlead delivers for every Shock Absorber WG9925680031 Sinotruk Sitrak order. Whether you need 10 units or 10,000, our team is prepared to quote, pack, and ship on your timeline.

Get your personalized quote today. Send us your required quantity, preferred packaging format, and delivery destination. We’ll respond with pricing, lead time, and shipping options within 24 hours.

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