Buy OEM 1981 Volvo Part # 31658699. Coil Spring (Rear). Variant code: 780F. Suspension Coil Spring Your coil springs are not especially prone to failure, but if they have

Suspension, Coil Spring and Torsion Spring.
Coil Spring.

REAR SPRING

Fits C40, EC40, EX40, XC40

Variant code: 780F.
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 1981 Volvo might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local Volvo service department to have your suspension system evaluated.