Buy OEM Hyundai Part # 553443S100 (55344 3S100, 55344-3S100,, 553443S100). Insulator. SPRING. PAD. Azera; Lower. Cadenza. KOREA BUILD, 2.4 liter. Optima; Korea Built; 2.4L. Optima; USA Built; All. US BUILD, 2.0

Insulator. Spring. Pad.
Coil Spring Insulator. S. Coil. Seat. Included with: Lower control arm.

Fits Azera, Sonata

Azera; Lower. Cadenza. KOREA BUILD, 2.4 liter. Optima; Korea Built; 2.4L. Optima; USA Built; All. US BUILD, 2.0 liter turbo, 16" wheel. US BUILD, 2.4 liter, 16" wheel.
Suspension Coil Spring - Repair or Replace
Your coil springs are not especially prone to failure, but if they have been cut, clamped, or heated to have the vehicle lowered, your Hyundai might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local Hyundai service department to have your suspension system evaluated.