Buy Subaru GL Coil Spring R (Rear). Suspension Coil Spring Your coil springs are not especially prone - OEM Subaru Part # 21091GA840

Coil Spring.

COIL SPRING-REAR Coil Spring

Fits GL (1985 - 1989)

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 GL 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.