Hyundai Lower Engine Mount | Lower Torque Replacement Guide
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Learn how to replace the lower engine torque strut mount on a Hyundai vehicle, also called “ROLL STOPPER.” In some cases, this may also be called a transmission mount. Once the lower engine mount fails, you will notice that your Hyundai jolts when changing gears due to excessive free play at the lower transmission mount.
At a Glance
- Part: the lower torque strut mount (roll stopper) under the front subframe.
- Symptoms: a clunk or jolt when shifting into gear or pulling away, and extra cabin vibration.
- Fits many four cylinder Hyundais (Accent, Elantra, Sonata, Santa Fe, Veloster); shown on a 2016 Elantra.
- Raise the car on jack stands and support the engine with a second jack before unbolting the mount.
- Tighten the bolts with a torque wrench to the service manual figure.
This guide applies primarily to Hyundai vehicles with the four-cylinder engine, including Accent, Sonata, Elantra, Santa Fe, Veloster, and other models. Pictures and video are from a 2016 Hyundai Elantra.
Symptoms
- Hyundai jumps (bangs) into gear
- Excessive vibrations inside the cabin.
What you will need
- Hyundai Torque Mount
- Metric Socket Set
- Ratchet wrench
- Torque wrench
- Jack (two)
- Jack Stand
Procedure
- Park the vehicle on a level surface. Turn the ignition off and move the shifter into the Park position. Remove the key from the ignition.
- Jack up the car at the jacking points.
If you don’t have ramps, use a car jack and jack stands. - Secure the car with jack stands. Jacks alone are not enough to ensure that the car won’t fall.
- Remove the engine undercover, also known as the splash shield. It is held in place with several 10mm screws.
- Identify the lower motor mount at the back of the engine.
- For this task, you will need a second jack. Ideally, this should be a larger jack. You must place this jack under the engine to support it while removing the motor mount. Support the engine with the second jack. Use a piece of wood between the jack and the engine. This will protect the oil pan from damage. You don’t need to raise the vehicle. Simply use this jack to support the vehicle.
- Remove both 13mm bolts that secure the lower motor mount to the frame.
- Remove the 16 mm bolt that secures the lower engine mount to the bracket.
Hold the back nut with a wrench if the bolt starts to spin.
- Reinstall the new motor mount in reverse order. Tighten the mounting bolts to 80 lb-ft.
If you don’t have ramps, use a car jack and jack stands.
Hold the back nut with a wrench if the bolt starts to spin.
How to Confirm the Mount Is Bad
- With the hood open and the parking brake set, have a helper hold the brake firmly and shift between Drive and Reverse while you watch the engine from a safe distance. A good mount lets it rock a little; a failed one lets it jump noticeably.
- Look at the rubber in the mount for cracks, tears or a gap where it has separated from the metal.
- A clunk from under the car when you get on and off the gas usually comes from this lower mount.
Check the Other Mounts Too
When one mount fails, the others take extra load. If your Hyundai still vibrates or clunks after replacing the lower mount, check the engine mount on the passenger side and the transmission mount on the driver side.
Frequently Asked Questions
Can I drive with a bad lower engine mount?
For a short time, but the engine moves more than it should, which strains the other mounts, hoses and axles. Replace it soon.
How long does it take to replace the lower mount?
About an hour for most four cylinder Hyundais with basic hand tools and a jack and stands.
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Is the roll stopper the same as a transmission mount?
Not exactly. The roll stopper is the lower torque mount that stops the engine from rocking forward and back. Some parts sites list it under transmission mounts.
