Complete replacement of all engine and transmission mounts on the 2018-2024 Honda Accord 1.5L Turbo, including front, rear, side, and transmission mounts to restore proper engine positioning and eliminate vibration.

Warnings

Tools required

Parts

• Front engine mount assembly × 1 — 50820-TVA-A01 or equivalent
• Rear engine mount assembly × 1 — 50810-TVA-A01 or equivalent
• Side engine mount assembly × 1 — 50890-TVA-A01 or equivalent
• Transmission mount assembly × 1 — 50850-TVA-A01 or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake. Chock rear wheels securely.
2. Disconnect negative battery terminal and secure away from battery post.
3. Raise front of vehicle and support on jack stands at manufacturer-specified lift points.
4. Remove engine under cover and splash shields to access mounts.
5. Install engine support fixture across engine bay or attach engine hoist to factory lift points on engine.
6. Take up slight tension on engine support to relieve weight from mounts, but do not lift engine yet.
7. Inspect all mounts and note which require replacement, photographing orientation and positioning.

Procedure

1. 1

   Remove right side engine mount (passenger side)
   From above, locate the side engine mount on the passenger side. Remove the engine mount cover bolts if equipped. Disconnect any vacuum lines or brackets attached to the mount bracket. Support engine with fixture and raise slightly to unload mount. Remove the through-bolt securing mount to engine bracket, then remove the mounting bolts securing mount bracket to frame rail. Remove mount assembly.
   Torque spec

   Cover Bolts15 Nm (11 lb-ft)

   Through-Bolt85 Nm (63 lb-ft)

   Mounting Bolts45 Nm (33 lb-ft)
2. 2

   Remove front engine mount
   From underneath vehicle, locate the front engine mount positioned below the engine near the front subframe. Support engine weight with engine support fixture. Remove the engine mount-to-block bolts securing the mount to the engine block. Then remove the engine mount-to-frame bolts securing the mount to the subframe or crossmember. Carefully remove the front mount assembly.
   Torque spec

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

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
3. 3

   Remove rear engine mount (torque mount)
   Locate the rear engine mount on the driver side, typically positioned between the engine and firewall. This mount absorbs torque during acceleration. Remove any heat shields or covers. Remove the mount through-bolt connecting the mount to the engine bracket. Remove the mount-to-frame bolts securing the mount base to the subframe or chassis. Remove the mount assembly, noting the orientation of any bushings or spacers.
   Torque spec

   Mount Through Bolt84 Nm (62 lb-ft)

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
4. 4

   Remove transmission mount
   Position a transmission jack or adjustable jack stand under the transmission pan with a block of wood to distribute load. Take up slight tension to support transmission weight. Locate the transmission mount on the driver side of the transmission. Remove the transmission mount bolts securing the mount to the transmission. Remove the mount-to-frame bolts securing the mount bracket to the subframe. Carefully remove the transmission mount assembly.
   Torque spec

   Transmission Mount Bolts65 Nm (48 lb-ft)

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
5. 5

   Inspect mounting points and clean surfaces
   With all mounts removed, inspect all mounting surfaces on the engine block, transmission, and frame/subframe for damage, cracks, or stripped threads. Clean all mounting surfaces with wire brush and solvent to remove corrosion, old sealant, and debris. Check alignment of engine and transmission by ensuring they are level and properly positioned. If engine has shifted, carefully adjust using engine support fixture before installing new mounts.
6. 6

   Install new transmission mount
   Position the new transmission mount onto the subframe mounting points and start the mount-to-frame bolts hand-tight. Align the transmission side of the mount with the transmission mounting boss. Install transmission mount bolts hand-tight. Ensure mount is properly oriented with void-fill or orientation marks matching original position. With transmission properly supported, torque all fasteners to specification in sequence: frame bolts first, then transmission bolts.
   Torque spec

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

   Transmission Mount Bolts65 Nm (48 lb-ft)
7. 7

   Install new rear engine mount
   Position the new rear engine mount assembly onto the subframe or chassis mounting location. Install mount-to-frame bolts hand-tight. Align the engine bracket with the mount and install the mount through-bolt hand-tight. Verify mount orientation matches original installation with any directional indicators properly aligned. Torque mount-to-frame bolts first, then torque the through-bolt to specification.
   Torque spec

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

   Mount Through Bolt84 Nm (62 lb-ft)
8. 8

   Install new front engine mount
   Position the new front engine mount between the engine block and subframe. Start the engine mount-to-frame bolts hand-tight into the subframe or crossmember. Align the upper portion of the mount with engine block mounting holes and start engine mount-to-block bolts hand-tight. Verify mount is seated properly and aligned. Torque engine mount-to-frame bolts first, then torque engine mount-to-block bolts to specification.
   Torque spec

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

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

   Install new right side engine mount
   Position the new side engine mount bracket onto the frame rail and install mounting bolts hand-tight. Align the mount with the engine bracket. Install the through-bolt hand-tight, ensuring proper orientation of mount bushings. Verify all components are properly aligned. Torque mounting bolts to frame first, then torque through-bolt to specification. Reconnect any vacuum lines or brackets. If equipped with mount cover, install and torque cover bolts.
   Torque spec

   Mounting Bolts45 Nm (33 lb-ft)

   Through-Bolt85 Nm (63 lb-ft)

   Cover Bolts15 Nm (11 lb-ft)
10. 10

    Settle mounts and perform final torque check
    With all mounts installed and torqued, carefully lower engine support fixture to transfer full engine/transmission weight onto new mounts. Rock the engine gently by hand to settle mounts into their natural position. With weight on mounts, perform final torque verification on all critical mount fasteners to ensure none have loosened during settling. Remove transmission jack if used.

Reassembly

1. Remove engine support fixture or hoist from engine bay.
2. Reinstall engine under covers and splash shields, ensuring all clips and fasteners are secure.
3. Reconnect negative battery terminal.
4. Lower vehicle from jack stands.

Verification

• Start engine and allow to idle. Check for unusual vibration or movement at idle.
• With assistant observing engine movement, gently apply brake and shift through Drive and Reverse to verify mounts properly control engine torque without excessive movement.
• Perform test drive at various speeds and acceleration rates. Engine should feel smooth with no clunking sounds or excessive vibration.
• Re-inspect all mount fasteners after test drive to ensure none have loosened.
• Verify no contact between engine/transmission and frame, firewall, or other chassis components throughout full range of engine movement.

More procedures for this vehicle