This procedure covers the removal and replacement of the rear engine mount on a 2014-2019 Toyota Corolla with the 1.8L I4 engine.

Warnings

Tools required

Parts

• Rear engine mount assembly × 1 — Use OEM specification

Preparation

1. Park vehicle on level ground and apply parking brake
2. Allow engine to cool completely if recently operated
3. Disconnect negative battery terminal
4. Raise front of vehicle and support securely on jack stands
5. Remove front engine under cover if equipped (10mm bolts)

Procedure

1. 1

   Support the engine
   Position a floor jack with a wood block under the oil pan to support the engine weight. Raise the jack just until it contacts the pan with light pressure, but do not lift the engine yet. Alternatively, install an engine support bar across the engine bay to suspend the engine from above.
2. 2

   Locate the rear engine mount
   From underneath the vehicle, locate the rear engine mount at the rear of the engine block. The mount connects the engine/transmission assembly to the subframe. It consists of the mount bracket bolted to the engine block and the mount itself bolted to the subframe.
3. 3

   Remove mount through bolt
   Using a 17mm socket, remove the mount through bolt that passes horizontally through the center of the mount assembly, connecting the upper and lower mount sections. This bolt may require significant force to break loose. Support the bolt as it comes out to prevent it from falling.
   Torque spec

   Mount Through Bolt84 Nm (62 lb-ft)
4. 4

   Slightly raise the engine
   Carefully raise the engine approximately 10-15mm using the floor jack or engine support bar. This relieves tension on the rear mount and creates clearance for removal. Do not raise excessively as this may stress other mounts or components.
   ⚠Raise the engine slowly and check for interference with radiator hoses, wiring, and other components. Stop if resistance is felt.
5. 5

   Remove engine mount-to-frame bolts
   Using a 14mm socket, remove the bolts securing the lower mount bracket to the subframe. Typically there are two bolts. Support the mount as you remove the final bolt to prevent it from falling.
   Torque spec

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
6. 6

   Remove engine mount-to-block bolts
   Using a 17mm socket, remove the bolts securing the upper mount bracket to the engine block/transmission assembly. There are typically two bolts accessible from below. The mount assembly can now be removed from the vehicle.
   Torque spec

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
7. 7

   Inspect and prepare new mount
   Inspect the mount locations on both the engine block and subframe for damage, cracks, or thread wear. Clean mounting surfaces of dirt and corrosion. Compare the new mount to the old mount to verify correct replacement part. Transfer any brackets or hardware if not included with the new mount.
8. 8

   Install new mount to engine block
   Position the new mount assembly and thread the engine mount-to-block bolts by hand to ensure proper alignment. Once both bolts are started, tighten them to specification using a torque wrench. Do not fully torque yet if alignment is difficult; snug them and proceed to next step.
   Torque spec

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
9. 9

   Install mount to subframe
   While supporting the mount, align the lower bracket with the subframe mounting holes. Install the engine mount-to-frame bolts and hand-tighten. Verify proper alignment of all mounting points before proceeding.
   Torque spec

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
10. 10

    Lower engine into position
    Carefully lower the engine using the jack or support bar until the mount is properly seated and aligned. The upper and lower sections of the mount should align for the through bolt. Adjust engine position as needed to achieve proper alignment.
11. 11

    Install mount through bolt
    Insert the mount through bolt through the center of the mount assembly. Ensure the bolt passes cleanly through all mounting points. Thread the nut onto the bolt and tighten to specification using a torque wrench.
    Torque spec

    Mount Through Bolt84 Nm (62 lb-ft)
12. 12

    Torque all mount bolts to specification
    With the engine settled in its normal position and the through bolt installed, torque all mounting bolts in sequence: first the engine mount-to-block bolts to 65 Nm (48 lb-ft), then the engine mount-to-frame bolts to 75 Nm (55 lb-ft). Verify the through bolt is torqued to 84 Nm (62 lb-ft).
    ⚠All mount bolts must be torqued with the engine in its normal resting position to avoid preloading the mount, which causes premature failure.
    Torque spec

    Engine Mount-to-Block Bolts65 Nm (48 lb-ft)

    Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)

    Mount Through Bolt84 Nm (62 lb-ft)
13. 13

    Remove engine support
    Carefully remove the floor jack or engine support bar. Verify the engine settles properly onto all mounts and inspect for proper alignment. Rock the engine gently by hand to confirm secure mounting.

Reassembly

1. Reinstall front engine under cover if removed, torquing bolts to 15 Nm (11 lb-ft)
2. Lower vehicle from jack stands
3. Reconnect negative battery terminal
4. Clear any diagnostic trouble codes if battery was disconnected for extended period

Verification

• Start the engine and verify no excessive vibration or unusual movement
• With engine running, shift through all transmission gears (foot on brake) and verify smooth engagement without excessive engine movement
• Perform a short test drive and verify normal engine operation without vibration or clunking noises during acceleration or deceleration
• After test drive, re-inspect all mount bolts from underneath to confirm they remain tight with no visible loosening

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