Shop OEM Volkswagen Group Part # 8K0411105FJ (8K0-411-105-FJ). Coil Spring. A4, S4; Adaptive Damping Susp. COUPE, w/1 violet, 1 green & 1 yellow mark, w/1 violet, 1 green & 1 yellow mark. W/1 violet & 3

Coil Spring.
1 Yellow, 1 Violet and 1 Green Mark. Coil Spring. Sport Suspension.

Coil Spring

Fits A4, A5, S4, S5

A4, S4; Adaptive Damping Susp. COUPE, w/1 violet, 1 green & 1 yellow mark, w/1 violet, 1 green & 1 yellow mark. W/1 violet & 3 white marks, w/1 violet & 3 white marks. W/1 violet, 1 green & 1 yellow mark, w/1 violet, 1 green & 1 yellow mark.
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 might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local service department to have your suspension system evaluated.