Buy 2011 Subaru STI Coil Spring (Right, Front). Suspension Coil Spring Your coil springs are not Springs, Suspension - OEM Subaru Part # 20330AC320

COIL SPRING-FRONT Coil Spring

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Suspension Coil Spring
Your coil springs are not especially prone to failure, but if they have been cut, clamped, or heated to have the vehicle lowered, your Subaru might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local Subaru service department to have your suspension system evaluated.