How Often Should Shock Absorber Top Bushings Be Replaced?

2 Answers
McLeah
07/24/25 12:24pm
Shock absorber top bushings are best replaced every 80,000 kilometers, or they can be replaced along with the shock absorbers. The car shock absorber top bushing is used to cushion the impact between the suspension spring and the car body. When driving on uneven roads, each top bushing bears more than a quarter of the car's weight impact. The shock absorber top cover can be fitted with a silicone pad, and adding silicone to the shock absorber is useful. The following are the functions of adding silicone: 1. Car shock absorber buffer rubber is generally made of rubber material, and like shock absorbers and suspension springs, it can assist in shock absorption and buffering. 2. During the operation of the shock absorber, the impact generated by the road surface is converted into the repeated bouncing motion of the spring by the suspension spring. At the same time, the shock absorber refines and accelerates the attenuation of the spring's inherent vibration, and finally uses the shock absorber top bushing as the final buffer to transmit it to the car body. 3. If the vehicle is not originally equipped with shock absorber buffer rubber, after using the buffer rubber, you will obviously feel that the vehicle's shock absorption quality is greatly enhanced, and it can also play a certain role in controlling the vehicle's noise.
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Barry
08/11/25 6:31am
I've been in the auto repair industry for nearly 20 years and have seen countless shock absorber top mount replacements. There's no absolute replacement schedule for this part—it all depends on driving habits and road conditions. If you frequently drive in the city, encounter many speed bumps or rough roads, or have an aggressive driving style with sudden braking or sharp turns, the top mount will wear out much faster, possibly requiring inspection at 40,000 to 60,000 kilometers. But if you mainly drive smoothly on highways with good road conditions and mild weather, it can last over 100,000 kilometers. The key is to pay attention to unusual noises when driving over uneven surfaces, like creaking sounds near the wheels, or a sudden increase in steering wheel vibration—these are signs of aging. I recommend having the mechanic check the top mount condition during every maintenance visit; don't wait until it fails. Replacing it early brings peace of mind and avoids damaging other suspension components, which would lead to higher repair costs. In short, focus on actual driving feel and inspections rather than strictly adhering to a timeline.
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