Suspension Control Arm Bushings for the 1973-1982 Buick Century
Restore your classic Century's ride quality and steering response by replacing worn control arm bushings.
- Symptoms of failure include clunking noises, steering wander, and uneven tire wear.
- A critical recall was issued for 1978-1981 models for rear control arm bolts that could break; inspect this area carefully.
- The vehicle platform changed in 1978; you must order parts specific to your year range (73-77 or 78-81).
- Replacement is difficult and requires special tools like a press; this is often a job for a professional mechanic.
Symptoms of Failing Control Arm Bushings
Worn control arm bushings on a 1973-1982 Century will make the car feel less stable and noisy. Because these cars have a double wishbone suspension, they have both upper and lower control arms, each with bushings that can wear out. Look for these common signs:
- Clunking or Banging Noises: A common symptom is a clunking sound from the front suspension, especially when driving over bumps, braking, or making a hard turn. This is the sound of loose metal parts hitting each other because the rubber bushing is no longer holding them tightly.
- Steering Wander: Your car may pull to the left or right on its own, requiring you to constantly correct the steering wheel to drive straight. This happens because worn bushings allow for excessive movement in the suspension, which throws off the wheel alignment.
- Vibrations: You might feel excessive vibrations through the steering wheel, especially as you accelerate. This is caused by the wheels wobbling slightly because the worn bushings can't hold them securely.
- Uneven Tire Wear: Check your front tires for wear on the very inside or outside edge. This is a classic sign that the wheel alignment is off, often due to bad bushings.
Known Safety Recall: Rear Control Arm Bolts
For 1978-1981 Buick Century models, there was a major recall concerning the bolts that attach the rear lower control arms to the frame. These bolts could fracture, potentially causing the control arm to detach from the car, which could lead to a loss of control. If you own a model from these years, it is critical to inspect these bolts and the rear control arm mounting points for integrity, even if the recall was performed decades ago.
Choosing the Right Aftermarket Bushing
Since original GM parts for this era are scarce, the aftermarket is your primary source. The quality can range from basic replacements to performance upgrades. Your choice depends on your budget and how you use your Century.
Brand Quality Tiers
- Premium Brands (Moog, Delphi, ACDelco Professional): These brands are generally considered high-quality and are often built to meet or even exceed original equipment (OE) standards. Moog is a long-time favorite for suspension parts, known for durability. Delphi and ACDelco's Professional line are also trusted choices for a reliable, long-lasting repair. For a classic car that you want to keep safe and reliable, spending a bit more on a premium brand is a wise investment.
- Mid-Range Brands (Mevotech): Mevotech strikes a balance between quality and cost. They are known for providing good performance for daily driving and are a solid alternative if premium brands are outside your budget.
- Economy Brands (Dorman, QuickSteer): Brands like Dorman offer cost-effective solutions that are popular for budget-conscious repairs. While they provide decent performance for an average driver, their longevity might not match that of the premium brands.
- Performance Brands (Nolathane, Energy Suspension): These brands often use polyurethane instead of rubber. Polyurethane is a stiffer material that can improve handling and steering response but may result in a harsher ride with more vibration compared to rubber. They are a good choice for a custom or performance-oriented build.
Common Ordering Mistake: Know Your Year and Platform
The Buick Century changed platforms during this period. 1973-1977 models use the larger A-body platform, while 1978-1981 models use the downsized A-body/G-body platform. The 1982 model year marked the switch to a front-wheel-drive platform. Suspension parts are NOT interchangeable between these groups. Always double-check that the bushings you order are correct for your specific model year.
Replacement Cost
The cost to replace control arm bushings depends on whether you do the work yourself or hire a shop. The bushings themselves are inexpensive, but the labor can be significant.
| Item | Estimated Cost |
|---|---|
| Aftermarket Bushing Kit (One Side) | $11 - $75 |
| Shop Labor (Per Side) | $150 - $350 |
| Total Professional Replacement (Per Side) | $161 - $425 |
| Wheel Alignment (Recommended after replacement) | $80 - $150 |
Frequently Asked Questions
Can I replace just the bushings, or do I need a whole new control arm?
For the 1973-1982 Century, replacing just the bushings is standard practice. Unlike many modern cars where the ball joint is integrated into the arm, these older control arms are simple, durable steel stampings. Replacing the entire arm is usually unnecessary unless it is bent or severely rusted.
How difficult is it to replace control arm bushings myself?
This is a difficult job for a beginner. The hardest part is removing the old, rusted bushings from the control arms. This often requires a hydraulic press or a specialized ball joint press tool, which can sometimes be rented from auto parts stores. Some mechanics resort to drilling out the old rubber and carefully cutting the outer metal sleeve with a saw to remove it. If you are not experienced with heavy suspension work, this job is best left to a professional.
Do I need a wheel alignment after replacing the bushings?
Yes. Replacing control arm bushings will change your suspension geometry. A full four-wheel alignment is necessary to ensure your car drives straight, handles properly, and doesn't cause premature tire wear.
Should I use rubber or polyurethane bushings?
For a stock ride feel, use rubber bushings. They are better at absorbing vibrations and provide a quieter, smoother ride. If you want tighter handling and a more responsive steering feel for a performance application, polyurethane is a good option, but be prepared for a firmer ride.
Technical Specifications
The 1973-1982 Buick Century uses a front suspension with upper and lower control arms, commonly known as a double wishbone suspension. Bushings are typically made of rubber bonded to a steel inner and outer sleeve. Polyurethane is available as a performance aftermarket alternative.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.