Firestone Coil Rite Air Spring Bag Model 4106 CR 4106 COIL-RITE
[F039-4106]

Coil-Rite™ air helper springs mount inside an existing open coil spring suspension. These air springs provide adjustable spring rates far superior to the standard coil spring. The durable polyurethane air springs will support 500-1,000 lbs per set*.
Coil-Rite air helper springs are made of durable polyurethane to withstand the rigors of coil-sprung suspensions.

Fits:
79-85 Riviera
79-85 El Dorado
80-85 Seville
02-08 Envoy (4x2, 4x4) (with rear coil springs)
02-08 Trailblazer (4x2, 4x4)
80-88 Thunderbird
98-03 Windstar
92-97 Trooper
82-88 Continental (with rear coil springs)
84-87 Mark IV (with rear coil springs)
80-88 Cougar
87-95 Pathfinder (4x2, 4x4)
79-85 Toronado
02-05 Bravada (4x2, 4x4) (with rear coil springs)