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- Wanda Plaza, Jinan, Shandong, China
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WG1608444017 is the genuine SINOTRUK Howo after suspension shock absorber assembly, precision‑engineered to deliver superior damping and ride comfort for heavy‑duty trucks. This vital component belongs to the trusted family of Sinotruk Howo parts, ensuring optimal control of chassis oscillations, reduced tyre wear, and enhanced driver comfort. The WG1608444017 shock absorber features a twin‑tube gas‑charged design, high‑strength piston rod, and precision‑ground working cylinder, providing consistent damping force across all operating conditions. Built to withstand the most demanding off‑road and highway applications, it guarantees long service life and maintains vehicle stability even under extreme loads.
The WG1608444017 shock absorber utilises a twin‑tube design with a low‑pressure nitrogen gas charge (approx. 5–8 bar). This gas charge minimises oil aeration and cavitation, ensuring consistent damping even during prolonged rough road use. The piston is machined from high‑strength aluminium alloy with specially calibrated valve orifices, providing precise control of oil flow during both compression and rebound strokes.
The outer tube (reserve tube) is made of cold‑drawn steel with a corrosion‑resistant coating, while the piston rod is induction‑hardened and hard‑chrome plated for exceptional wear resistance. The rod seal is a multi‑lip design with an integrated scraper, preventing dirt ingress and extending service life. The WG1608444017 assembly includes durable rubber bushes at both ends, isolating vibration and allowing for slight misalignment during installation.
The WG1608444017 shock absorber is engineered for continuous operation in temperatures from -40°C to +120°C, with occasional spikes up to +140°C. The special low‑temperature oil maintains viscosity down to -40°C, ensuring damping effectiveness in arctic conditions. High‑temperature stability is achieved through a synthetic base oil and advanced seal materials, preventing fade during heavy off‑road use.
Dynamic damping force at 0.52 m/s piston speed is 3500 N (±15%) in rebound and 1200 N (±15%) in compression, meeting SINOTRUK’s strict ride and handling targets. The gas charge maintains rod position even under static load, eliminating “lag” on initial movement. Durability testing exceeds 2 million cycles without significant force drop, guaranteeing long‑term reliability for heavy‑duty trucks.
The WG1608444017 shock absorber is primarily installed on the rear tandem axle suspension of Howo heavy‑duty trucks. It controls axle oscillations, prevents bottoming out on rough terrain, and maintains tyre contact with the road, improving traction and braking stability.
In dump truck and concrete mixer applications, the Shock Absorber helps to dampen the severe pitching motions caused by uneven loading and off‑road operation. This reduces stress on the frame and suspension components, extending the life of the entire chassis.
It is also used on some Howo tractor units to improve ride quality for long‑haul drivers. By effectively damping road‑induced vibrations, the shock absorber reduces driver fatigue and protects sensitive cargo from excessive shock.
Before installing a new WG1608444017, inspect the mounting brackets for damage or wear. Always replace the shock absorber in axle pairs (both rear units) to ensure balanced damping. Tighten the mounting nuts to the specified torque (typically 300–350 Nm) with the suspension loaded to avoid pre‑loading the rubber bushes.
During routine chassis inspections, check for oil leakage around the rod seal, damaged dust tubes, or loose mountings. If any sign of leakage or reduced damping is noticed, replace the shock absorber immediately with a genuine WG1608444017. Store spare units in a vertical position to prevent oil from bypassing the seals.
Genuine Sinotruk Howo parts such as the WG1608444017 after suspension shock absorber are manufactured to exacting tolerances and validated through extensive durability testing. Non‑genuine copies often use inferior seals, incorrect valve settings, or low‑grade oil, leading to early failure, poor ride quality, and even suspension damage. By choosing the authentic WG1608444017, you ensure perfect fit, consistent damping performance, and long service life – all backed by SINOTRUK’s quality assurance. Protect your vehicle’s handling and safety with genuine components.
The WG1608444017 shock absorber plays a critical role in maintaining vehicle stability, especially when the truck is operating near its GVW. It controls the unsprung mass of the axles, reducing the transmission of impact forces to the chassis frame. This not only improves comfort but also protects sensitive components like the fifth wheel, air tanks, and exhaust system from stress‑related cracking.
Each WG1608444017 unit is 100% tested on a dynamometer before leaving the factory, ensuring that damping force characteristics fall within the specified curve. The piston rod seal is subjected to a million‑cycle test at extreme temperatures to verify its durability. This rigorous quality control is why genuine SINOTRUK shock absorbers are trusted by fleet operators worldwide.
For optimal performance, always replace the shock absorber bushings if they show signs of wear. The rubber bushes supplied with the genuine WG1608444017 are made from natural rubber compounds that resist ozone cracking and maintain their elasticity for years. Using non‑genuine bushes can lead to noise, premature wear, and altered suspension geometry. Trust the complete package – only genuine SINOTRUK Howo parts deliver the reliability your truck deserves.
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