Buy OEM 2006 Porsche Part # 99734353142504 (997-343-531-42-504, 99734353131504). Coil Spring. W/O AWD, w/active suspension, coupe. Suspension Coil Spring - Repair or Replace Your coil springs are not especially prone

Coil Spring.
Coil Spring. Electronic Controlled Suspension. Part listed includes right and left Spring. Set.

Coil Spring

Fits 911, Boxster

W/O AWD, w/active suspension, coupe.
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 2006 Porsche might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local Porsche service department to have your suspension system evaluated.