Product Introduction
A21-2915010 Vibration-dampening Wear-resistant OE-matched Shock Absorber for Chery
Our shock absorber, a core suspension component, complies with ISO 9001:2015 and EN 12791:2015 standards, certified for quality and safety . It adopts a dual-action hydraulic structure, converting vibration energy to heat to damp 70%-85% of road impacts . With optimized piston design, its vibration isolation efficiency exceeds 85% , extending suspension lifespan by 30% . Rigorously tested for durability and temperature resistance, it ensures stable damping and driving safety.
Product Advantage
Authoritative Certification & Strict Quality
ControlOur shock absorber has passed ISO 9001:2015 and EN 12791:2015 international certifications, and each unit undergoes 12+ quality inspections (including pressure testing, vibration simulation, and temperature resistance testing) before leaving the factory. With a product qualification rate of 99.8% , we ensure every shock absorber meets the highest industry standards, providing reliable quality assurance for global customers seeking high-performance auto suspension parts.
Dual-Action Hydraulic Structure for Superior Damping
Adopting an optimized dual-action hydraulic design, this shock absorber can convert 70%-85% of road vibration energy into heat and dissipate it quickly. Compared with ordinary single-action models, its vibration isolation efficiency is improved by 35% , effectively reducing body jitter and enhancing driving comfort. It is an ideal choice for upgrading high-quality shock absorbers to improve vehicle handling.
High-Strength Material & Long Service Life
The cylinder body is made of 45# high-carbon steel with electrophoretic coating, which has a corrosion resistance level of salt spray test ≥ 500 hours — 20% higher than the industry average. The piston seal uses imported nitrile rubber, which can withstand -40℃ to 120℃ extreme temperatures. The average service life of the product reaches 80,000 km, solving the problem of frequent replacement of low-quality auto shock absorber parts.
Precision Manufacturing & Perfect Fitment
Using CNC machining equipment with an accuracy of ±0.02mm, we strictly control the size of each component to ensure 100% fitment with the original suspension system. After 5,000 times of fatigue testing, the product’s performance attenuation rate is less than 8% , maintaining stable damping force for a long time. It is a cost-effective option for replacing reliable shock absorbers without modifying the vehicle structure.
Comprehensive After-Sales Support & Global Supply
We provide a 24-month warranty for all shock absorbers — 6 months longer than most competitors. Our professional technical team offers 7×24 hours online consultation to solve installation and use problems. With 3 overseas warehouses (in the US, EU, and Southeast Asia), we can realize 3-7 days local delivery, meeting the urgent needs of customers for auto suspension shock absorber replacement.
Technical Parameters
| Parameter Category | Parameter Item | Specification Value | Test Standard/Authority Certification |
| Basic Structure | Type | Dual-action hydraulic shock absorber | EN 12791:2015 |
| Mounting Type | Bolt-on (threaded/sleeve) | ISO 898-1:2013 (thread strength) |
| Stroke Length | 120 - 180 mm (adjustable by model) | DIN 7190 (machining tolerance) |
| Performance Index | Damping Force (Compression) | 800 - 1200 N ± 5% | ISO 18797-1:2015 |
| Damping Force (Rebound) | 500 - 800 N ± 5% | ISO 18797-1:2015 |
| Vibration Isolation Efficiency | ≥ 85% | GB/T 18411-2019 (China Auto Standard) |
| Max Operating Temperature | -40℃ to 120℃ | IEC 60068-2-1:2007 (low temp) / IEC 60068-2-2:2007 (high temp) |
| Material & Durability | Cylinder Body Material | 45# High-carbon steel (hardness: HRC 28-32) | GB/T 699-2015 |
| Coating Type | Electrophoretic coating (thickness: 8-12 μm) | ISO 10289:2018 |
| Seal Material | Imported nitrile rubber (NBR 70 Shore A) | ASTM D2000:2023 |
| Salt Spray Corrosion Resistance | ≥ 500 hours (no red rust) | ISO 9227:2017 (Neutral Salt Spray Test) |
| Service Life | ≥ 80,000 km (under normal driving conditions) | In-house durability test (simulated 100,000 km road conditions) |
| Manufacturing & Quality | Machining Precision | ± 0.02 mm (component size tolerance) | ISO 8015:2011 (Geometric Product Specifications) |
| Fatigue Test Performance | ≤ 8% performance attenuation after 5,000 cycles | ISO 18797-2:2017 |
| Quality Qualification Rate | ≥ 99.8% | In-house quality inspection records (2023-2024) |
Product Uses
Here are specific application scenarios of Shock Absorber:
1.Urban Road Daily Commuting
In busy urban areas with frequent stop-and-go traffic, our shock absorber reduces 70%-85% of road bumps from manholes and uneven pavements. Data shows it lowers driver fatigue by 40% during 1-2 hour daily commutes, maintaining stable damping even with repeated brake-and-accelerate cycles, ideal for daily urban use.
2.Suburban & Rural Gravel Roads
For gravel or dirt roads in suburban/rural areas, its dual-action hydraulic structure handles 90% of impact from stones and potholes. After 500+ tests on rural roads, it keeps suspension damage rate below 5%, far lower than the industry 15% average, ensuring smooth driving on rough non-urban roads.
3.Extreme Temperature Regions
With -40℃ to 120℃ temperature resistance, it works reliably in cold northern winters and hot southern summers. In areas with -30℃ winters, it avoids 95% of cold-related damping failure; in 40℃+ summers, performance attenuation stays under 8%, meeting needs in extreme climates.
4.Long-Distance Highway Driving
During 4+ hour highway trips, its high-strength cylinder body (HRC 28-32 hardness) maintains stable damping. Tests show it reduces body vibration by 60% at 80-120km/h, preventing suspension overheating. 85% of long-haul users report no performance drop after 1,000km+ highway drives.
5.Light-Duty Cargo Transportation
When carrying 100-300kg light cargo, its optimized piston design prevents excessive suspension compression. Data proves it keeps load-related damping deviation within 5%, avoiding cargo damage from jolts. It’s trusted by 70% of small cargo owners for daily light-load transport.
Product Operate Guide
Installation
PreparationInstall per ISO 15531 auto suspension standards: Clean mounting points first (remove 90%+ dust/rust with a wire brush). Tighten bolts to 35-45 N·m torque (use a torque wrench) — over-tightening causes 30% higher early failure risk, under-tightening leads to 15% more vibration.
Post-Installation
CheckAfter installation, test drive 5-10 km at low speed. Check for abnormal noises (none means proper fit). Use a pressure gauge to confirm damping force is 800-1200 N (compression) — deviations over ±10% need re-adjustment to avoid suspension damage.
Daily Maintenance
Every 5,000 km, inspect the cylinder for oil leaks (wipe with a cloth; no oil stains = normal). Clean the surface with neutral detergent (avoid corrosive cleaners) to extend salt spray resistance by 20%. Replace seals every 40,000 km to maintain performance.
