1985 Buick Century Insulator. Spring. Seat. (Upper, Lower) - 25940741

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1985 Buick Century

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Insulator. Spring. Seat. (Upper, Lower)
This Fits Your 1985 Buick Century

Part Number: 25940741
Supersession(s): 15815520

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A pleated and flexible protective device used over bare metal that collapses and expands with travel. Coil Spring Insulator. Boot. Coil. Retainer. Suspension Strut Bellows.

Coil Spring InsulatorSuspension Strut Bellows

Fits Avalanche, Escalade , Escalade ESV, Escalade EXT, Sierra 1500, Silverado, Suburban 1500, Tahoe , Yukon, Yukon XL 1500

2WD. 2WD, 1/2 TON, w/auto level cntrl. 2WD, w/auto leveling. 2WD, w/magneride. 4WD. 4WD, 1/2 TON, w/auto level cntrl. 4WD, w/auto leveling. 4WD, w/magneride.
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 1985 Buick Century might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local Buick service department to have your suspension system evaluated.

Front suspension. Wheels. Suspension components.

Full Diagram

#12

Required: 1

1/2 TON. 4WD. Delco# 540-238. Delco# 540-257. Delco# 540-615. Delco# 540-616. Delco# 540-617. Delco# 540-618. Delco# 540-619. Delco# 540-620. Delco# 540-621. Delco# 540-622. Delco# 540-623. Delco# 540-624. Delco# 540-625. Delco# 560-706. Delco# 560-707. Delco# 560-708. Delco# 560-709. Delco# 580-364. Delco# 580-369. Delco# 580-372. Delco# 580-373. Delco# 580-416. Delco# 580-431. Delco# 580-432.

1/2 TON. Left.4WD. Right.4WD. Upper insulator. w/auto level cntrl.

FRONT SUSPENSION. SUSPENSION COMPONENTS.

Full Diagram

#12

Required: 1

1/2 TON. 2WD. Delco# 540-238. Delco# 540-257. Delco# 540-544. Delco# 540-615. Delco# 540-616. Delco# 540-617. Delco# 540-618. Delco# 540-619. Delco# 540-620. Delco# 540-621. Delco# 540-622. Delco# 540-623. Delco# 540-624. Delco# 540-625. Delco# 560-706. Delco# 560-707. Delco# 560-708. Delco# 560-709. Delco# 580-364. Delco# 580-369. Delco# 580-372. Delco# 580-416. Delco# 580-431. Delco# 580-432.

1/2 TON. Front Upper. Left.2WD. Right.2WD. Upper insulator. w/auto level cntrl.

FRONT SUSPENSION. SUSPENSION COMPONENTS.

Full Diagram

#12

Required: 1

4WD. 6A7 & 7A7. 6DA & 7DA. 6EA & 7EA. 6MJ & 7MJ. 6NK & 7NK. 6NP & 7NP. 6PM & 7PM. 6RY & 7RY. 6SC & 7SC. 6TB & 7TB. 6TT & 7TT. 6ZC & 7ZC. W/ALUM control arm. W/IRON control arm.

Left.4WD. Right.4WD. Upper insulator.

Front suspension. Steering gear & linkage. Suspension components.

Full Diagram

#12

Required: 1

2WD. 6JS. 6KJ & 7KJ. 6LN & 7LN. 6RK. 6RM. 6RS. 6SH. 6YU. 6YW & 6YX. 6ZA. 7ZK & 7SJ & 7ZA. Delco# 540-460. Delco# 540-615. Delco# 540-618. Delco# 540-619. Delco# 560-707. Delco# 580-364. Delco# 580-369. Delco# 580-431. w/aluminum arm. w/cast iron arm. w/magneride. w/o magneride.

Front Upper. Left.2WD. Right.2WD. Upper insulator. w/magneride.

FRONT SUSPENSION. SUSPENSION COMPONENTS.

Full Diagram

#12

Required: 1

2WD. 6DA & 7DA. 6DY & 7DY. 6DZ & 7DZ. 6ZK & 6SJ. Delco# 540-257. Delco# 540-573. Delco# 540-615. Delco# 540-616. Delco# 540-617. Delco# 580-373. w/magneride. w/o magneride.

Front Upper. Left.2WD. Right.2WD. Upper insulator. w/magneride.

FRONT SUSPENSION. SUSPENSION COMPONENTS.

Full Diagram

#12

Required: 1

4WD. 6A1 & 6D3. 6JS & 7JS. 6KJ & 7KJ. 6LN & 7LN. 6RS. 6SH. 6YU. 6YW & 6YX. 6ZA. Delco# 540-257. Delco# 540-460. Delco# 540-471. Delco# 540-615. Delco# 540-618. Delco# 540-619. Delco# 580-369. Delco# 580-370. Delco# 580-431. w/aluminum arm. w/cast iorn arm.

Front Upper. Left.4WD. Right.4WD. Upper insulator.

FRONT SUSPENSION. SUSPENSION COMPONENTS.

Full Diagram

#12

Required: 1

2WD. 6DA & 7DA. 6DY & 7DY. 6HA & 6KC. 6JR & 7JR. 6JS & 7JS. 6KD & 7KD. 6KJ & 7KJ. 6LK & 7LK. 6LN & 7LN. 6NK & 7NK. 6TB & 6TF. 6TB & 7TB. 6TT & 7TT. 6UK & 7UK. 6XU & 7XU. w/auto leveling. w/o auto leveling.

Front Upper. Left.2WD. Right.2WD. Upper insulator. w/auto leveling.

FRONT SUSPENSION. SUSPENSION COMPONENTS.

Full Diagram

#12

Required: 1

2WD. 6A7 & 7A7. 6DA & 7DA. 6EA & 7EA. 6MJ & 7MJ. 6NK & 7NK. 6NP & 7NP. 6PM & 7PM. 6RY & 7RY. 6SC & 7SC. 6TB & 7TB. 6TT & 7TT. 6ZC & 7ZC. Aluminum control arm. Iron control arm.

Left.2WD. Right.2WD. Upper insulator.

Front suspension. Suspension components.

Full Diagram

#12

Required: 1

4WD. 5. 3 & 6. 0 liter. 6. 2 liter. 6DA & 7DA. 6DY & 7DY. 6JR & 7JR. 6JS & 7JS. 6KD & 7KD. 6KJ & 7KJ. 6LK & 7LK. 6LN & 7LN. 6NK & 7NK. 6RK & 6RM. 6TB & 6TF. 6TB & 7TB. 6TT & 7TT. 6UK & 7UK. 6XU & 7XU. W/AUTO leveling. W/O auto leveling.

Front Upper. Left.4WD. Right.4WD. Upper insulator. w/auto leveling.

FRONT SUSPENSION. SUSPENSION COMPONENTS.

Full Diagram

#12

Required: 1

4WD. 6DA & 7DA. 6DY & 7DY. 6DZ & 7DZ. 6WT & 6WU. Delco# 540-257. Delco# 540-509. Delco# 540-573. Delco# 540-588. Delco# 540-615. Delco# 540-616. Delco# 540-617. w/magneride. w/o magneride.

Front. Left.4WD. Right.4WD. Upper insulator. w/magneride.