| Parameter Item | Nominal Value | Tolerance | Unit |
| Wire Diameter | 15.2 | ±0.15 | mm |
| Outer Diameter | 180.0 | ±1.5 | mm |
| Inner Diameter | 149.6 | ±1.5 | mm |
| Free Length | 415.0 | ±3.0 | mm |
| Total Coils | 6.6 | ±0.25 | Coils |
| Active Coils | 5.3 | ±0.25 | Coils |
| Direction | Right-hand | — | / |
| End Type | Closed & Ground Flat | — | / |
| Spring Rate | 465 | ±4.0% | N/mm |
| Hardness | 47–49 | ±2 | HRC |
OEM Part Number:54630-3S210
Replaced by: 54630-3S210 (Latest Revision)
Alternate OE: 546303S210
Product Name: Front Suspension Coil Compression Spring
Application: Hyundai Sonata YF (2011–2014) / Kia Optima TF
Position: Front Axle, Left & Right Universal
Weight: 3.95 kg (8.71 lbs)
Material: 60Si2Mn / SUP10 High Strength Spring Steel
Quality Standard: ISO/TS16949, JIS G 4801
Recommended Replacement: Replace in pairs (LH+RH)
Warranty: 1 Year / 100,000 km
