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S21-3001011
HongPro
S21-3001011
Product Introduction
S21-3001011 Wear-Resistant Precision-Engineered High-Precision Steering Knuckle for Chery
Crafted with precision engineering, our steering knuckle is a critical suspension component designed to ensure optimal steering control, weight support, and wheel alignment. Manufactured from high-strength ductile iron or forged steel, it undergoes rigorous fatigue testing (e.g., 500,000+ cycles under extreme load) to guarantee durability and reliability.
Fully compatible with Chery’s OEM specifications, this knuckle enhances vehicle stability, reduces tire wear, and improves safety. Each unit is 100% QC-tested for dimensional accuracy, hardness, and structural integrity. Trusted by global distributors, it delivers exceptional performance under diverse driving conditions.
Product Advantage
Crafted from high-grade ductile iron (QT500-7) or precision-forged steel, our steering knuckles are engineered for exceptional strength-to-weight ratio. This material choice ensures superior impact resistance and fatigue strength, capable of withstanding extreme loads exceeding 2,500 MPa. Our investment in automated casting and CNC machining guarantees flawless dimensional accuracy and consistency in every batch, eliminating structural defects and ensuring perfect fitment.
We subject every steering knuckle to a brutal testing regimen that far exceeds industry standards. This includes 500,000+ cycles of dynamic fatigue testing under simulated extreme road conditions and salt spray corrosion testing for over 720 hours. Our components achieve a 99.8% pass rate in our quality control checks, providing irrefutable data that assures long-term performance and driver safety, significantly reducing the risk of premature failure.
Every unit undergoes a 100% inspection process utilizing 3D coordinate measuring machines (CMM) to verify critical dimensions against original equipment specifications. We enforce a tolerance standard of within ±0.05mm, ensuring a perfect OEM-fit without modification. This meticulous attention to detail guarantees seamless installation, correct wheel alignment, and optimal vehicle handling, directly translating to reduced comebacks and heightened customer satisfaction.
Beyond mere replacement, our knuckles are optimized for performance. The design promotes improved stability and precise steering response by maintaining exact geometry. This reduces abnormal tire wear, lowers stress on adjacent suspension components, and provides a smoother, more controlled driving experience. It’s not just a part; it’s an upgrade in reliability and performance for your customers.
Technical Parameters
| Parameter Category | Specification Details | Standards & Testing |
| OEM Part Number | Replaces OEM #:S21-3001011 | Chery OEM Direct Interchange |
| Material | High-Grade Ductile Iron (QT500-7) | ISO 1083 Standard; Brinell Hardness: HB 170-230 |
| Manufacturing Process | Precision Casting + CNC Machining | Dimensional tolerance held within ±0.05mm |
| Surface Treatment | Black Electrocoating / Phosphating | Corrosion Resistance: >720 hours Neutral Salt Spray Test (ASTM B117) |
| Key Metrics | Ultimate Tensile Strength: ≥500 MPa Yield Strength: ≥320 MPa Elongation: ≥7% | Meets GB/T 9440-2010 / ASTM A536 Standards |
| Performance Testing | Dynamic Fatigue Test: >500,000 cycles (under 2.5x axial load) Impact Toughness: ≥15 J/cm² | Simulated extreme road conditions |
| Quality Assurance | 100% Dimensional Check (CMM) 100% Magnetic Particle Inspection | Zero defect policy for critical safety areas |
| Package | Individual Polybag + Carton Box + Pallet | Gross Weight: ~12.5 KG/Unit (varies by model) |
Product Uses
Here are specific application scenarios of Steering Knuckle:
As a high-wear component within the suspension and steering system, the steering knuckle is a critical replacement item during routine vehicle servicing. After approximately 80,000-120,000 kilometers or 3-5 years of use, factors like road impact, friction, and stress can lead to fatigue damage or deformation. Our product provides a reliable, OEM-standard solution for mechanics and garages performing scheduled maintenance, ensuring restored driving safety and handling precision.
In the event of a front-end collision, the steering knuckle is highly susceptible to bending, cracking, or breaking due to its role in absorbing impact forces. Our high-strength knuckle is the trusted choice for professional auto body repair shops and insurance-approved repair networks. It offers a perfect fit and identical performance to the original part, enabling comprehensive and safe front suspension system restoration after an accident.
When replacing other major suspension components like shock absorbers, control arms, or wheel bearings, it is often recommended to inspect the steering knuckle for wear or damage. Our product is essential for complete suspension overhaul kits, providing a new foundation for the hub and bearing assembly. This ensures all new parts work in harmony, maximizing the lifespan of the entire system and providing a like-new driving feel.
This steering knuckle is engineered for the global aftermarket, catering to distributors, wholesalers, and e-commerce retailers who supply repair shops worldwide. Its certified OEM interoperability, robust packaging, and proven reliability make it an ideal, high-volume product line. You can confidently stock and sell this part, backed by our rigorous quality data, to meet the growing demand for high-quality Chery replacement components.
For vehicle owners operating in harsh driving conditions—such as regions with poor road surfaces, frequent potholes, or extreme temperature variations—our upgraded knuckle offers enhanced durability. It provides greater resistance to impact and fatigue compared to standard parts, making it a prudent upgrade for those seeking superior reliability and long-term peace of mind from their vehicle's critical steering components.
Product Operate Guide
For optimal performance and safety, we strongly recommend installation by a certified professional. Prior to installation, always conduct a thorough inspection of all adjacent components, including wheel bearings, tie rods, and brake calipers. Utilize a torque wrench to tighten all mounting bolts to the specified values (refer to our detailed technical sheet for exact NM specifications). A final wheel alignment is mandatory after replacement to ensure precise steering control and prevent premature tire wear. Proper installation guarantees full system integrity and longevity.
