Shop OEM Honda Part # 8943744481 (8-94374-448-1, 8971758500). Coil Spring Damper (Rear). Passport. Suspension Coil Spring - Repair or Replace Your coil springs are not especially prone to failure

Bumper. Damper.
A component (mounted in the center of the spring) which cushions the spring as it is compressed. Coil Spring. Rubber. Shock. Stopper.

Coil Spring Damper

Fits Passport, SLX

Passport.
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.