An engine mount is a part between the engine and the frame that holds the engine in your car. In most cars, an engine and transmission are bolted together and held in place by three or four mounts. It is a wearing part with a design life of generally 6 to 80000 km. To further dampen the vibration, some used engine mounts are filled with liquid. No matter if you’re a car owner who wants to replace your engine mount or a procuring agency, this guide is likely to be helpful. Now we may start from the operating principle of an engine mount.


How does an engine mount work

The primary function of an engine mount is to fix the motor on the frame. With rubber on the bracket to absorb the shock and prevent engine vibration conduction to the car. When the engine mount is damaged or aged, the vibration and noise in the car will increase and affect the ride comfort. When the glue breaks badly, the engine can even fall off the frame.

There are two kinds of engine mounts

Hydro-mount: Some vehicles have multiple kinds of engine mounts. It is called hydrolastic, hydro-mounts with hollow chambers filled with hydraulic fluid, or hydraulic. Hydro-mounts have particular absorb vibrations like a jelly-filled donut. Otherwise, these vibrations would be passed through to the chassis of the vehicle.

Non-hydraulic mount: This kind of engine mount consists of solid steel and a tough rubber insert. The rubber insert here is to isolate the vibration from the chassis of the vehicle and dampen the engine’s vibration and to reduce component stress and overall shifting.


How to choose a good engine mount

On any forum discussion about motor mounts, you’ll notice that opinions differ widely on what materials make the best engine mount. So, this question is actually depend on your personal feelings about how much vibration is too much…or how much power loss at the wheels is too much. Choosing the right mount often comes down to your intended vehicle use, and it is just a simple give and take between engine mount materials.

If you are looking for engine mount replacements, keep the below tips in mind to select the most suitable engine mount:

  • To meet or exceed manufacturer’s specs: A quality engine mount should match the type of mount needed for your specific vehicle or at least conform to the original equipment. If they don’t fit well, the shock absorption of the engine mount might as well be affected.
  • Remanufacturing: If you are considering a remanufactured part, make sure it doesn’t have any cracked, loose, or broken brackets. All bolts should be accounted for and in good shape (not rusted). For a hydro-mount, you can confirm by the close observation that the rubber is there is no leakage of the various fluids and is in good shape.
  • Choose your style: A non-hydraulic mount might be useful enough, and also reasonable at its price compared to hydro-mounts. However, these two kinds are not analogous – you may have additional engine noise if you try a different type of mount. Your expensive car may not have quite as smooth of a ride if it is not suitable.


Of course, selecting a reliable supplier can save your cumbersome inspection. As a new-rise enterprise in the automotive rubber mount industry, AA-TOP brand had been registered and spread in more than 100 countries. Its engine mount adopts the world’s advanced oil filling equipment and high quality, environmental protection materials. By absorbing vibration from the engine, it provides a quiet and comfortable environment in the cockpit. In addition to ensuring the same specifications as the original car, its quality can be comparable to the original factory accessories.