Complete replacement of all engine mounts including left and right engine mounts and transmission mount on the 2011-2014 Ford F-150 3.5L EcoBoost 4WD.

Warnings

Tools required

Parts

• Left engine mount assembly × 1 — OEM Ford part or equivalent
• Right engine mount assembly × 1 — OEM Ford part or equivalent
• Transmission mount assembly × 1 — OEM Ford part or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery cable
3. Raise front of vehicle and secure on jack stands at manufacturer-specified lift points
4. Remove engine under covers and skid plates if equipped
5. Install engine support bar across engine compartment or attach overhead hoist to engine lifting eyes

Procedure

1. 1

   Support the engine and transmission
   Using the engine support bar or overhead hoist, apply slight upward pressure to the engine to relieve weight from the mounts. The engine should be barely lifted, not fully raised. Ensure the support is stable and centered. Place a hydraulic jack with a wood block under the transmission pan for additional support.
2. 2

   Remove right engine mount (passenger side)
   Locate the right engine mount between the engine block and frame rail. Remove the mount-to-frame bolts first (typically 3 bolts). Then remove the mount-to-block bolts (typically 3-4 bolts). If equipped with a through-bolt, remove it last. Carefully lift or lower the engine slightly if needed to access all fasteners. Remove the mount assembly.
   ⚠Support engine weight before removing final mount bolt. Engine may shift when mount is disconnected.
   Torque spec

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

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
3. 3

   Remove left engine mount (driver side)
   Access the left engine mount from underneath. Remove the mount-to-frame bolts securing the mount bracket to the frame rail. Remove the mount through-bolt that passes through the mount and bracket. Remove the mount-to-block bolts securing the mount to the engine block. Carefully maneuver the mount assembly out, adjusting engine position slightly if necessary.
   ⚠The through-bolt may be seized. Apply penetrating oil and allow time to soak before removal.
   Torque spec

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

   Mount Through Bolt101 Nm (75 lb-ft)

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
4. 4

   Remove transmission mount
   Locate the transmission mount at the rear of the transmission where it meets the crossmember. Use the jack under the transmission to slightly raise and support it. Remove the transmission mount bolts securing the mount to the crossmember. Remove the bolts securing the mount bracket to the transmission. Lower the transmission mount assembly and remove.
   ⚠Ensure transmission jack is properly positioned to prevent transmission from shifting during mount removal.
   Torque spec

   Transmission Mount Bolts65 Nm (48 lb-ft)
5. 5

   Inspect mounting points
   With all mounts removed, inspect the engine block mounting bosses, frame mounting points, and transmission mounting surfaces for cracks, damage, or excessive wear. Clean all mounting surfaces with a wire brush to remove rust, debris, and old thread locker. Inspect mounting bolts and replace if threads are damaged or bolts show signs of stretching.
6. 6

   Install new transmission mount
   Position the new transmission mount bracket to the transmission and start all bolts hand-tight. Raise the transmission with the jack to align the mount to the crossmember. Install the mount-to-crossmember bolts hand-tight. Verify alignment, then torque all transmission mount bolts to specification in a cross pattern.
   Torque spec

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

   Install new left engine mount
   Position the new left engine mount to the engine block and install the mount-to-block bolts hand-tight. Adjust engine height and position with the support bar to align the mount bracket with the frame rail. Install the mount-to-frame bolts hand-tight. Insert the mount through-bolt and install hand-tight. Verify all components are properly seated and aligned.
   ℹ️Do not fully torque bolts until all mounts are installed and engine is in proper position.
   Torque spec

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

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

   Mount Through Bolt101 Nm (75 lb-ft)
8. 8

   Install new right engine mount
   Position the new right engine mount to the engine block and start the mount-to-block bolts hand-tight. Adjust engine position to align the mount with the frame mounting bracket. Install the mount-to-frame bolts hand-tight. Ensure the mount is not twisted or bound and sits naturally in position.
   ℹ️The engine may need slight repositioning to achieve proper mount alignment on both sides simultaneously.
   Torque spec

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

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
9. 9

   Align engine and transmission assembly
   With all mounts installed hand-tight, use the engine support bar to adjust engine position until it sits naturally centered with no binding on any mount. Check that the engine is level side-to-side and that the transmission is properly aligned. Rock the engine slightly to ensure all mounts are seated properly without tension.
10. 10

    Torque all mount fasteners
    Beginning with the transmission mount, torque all mount bolts to specification using the proper torque sequence. Torque transmission mount bolts first, then left engine mount bolts (block bolts, then frame bolts, then through-bolt), and finally right engine mount bolts (block bolts, then frame bolts). Use a cross-pattern when multiple bolts secure the same component.
    ⚠Critical torque specifications must be followed exactly. Over-torquing can damage mounts or crack mounting bosses.
    Torque spec

    Transmission Mount Bolts65 Nm (48 lb-ft)

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

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

    Mount Through Bolt101 Nm (75 lb-ft)
11. 11

    Remove engine support and verify
    Carefully and slowly release tension from the engine support bar or overhead hoist, allowing the engine weight to transfer to the new mounts. Remove the support equipment and transmission jack. Visually inspect all mounts to ensure they compress evenly and the engine sits level. Check that no mount appears over-compressed or extended.

Reassembly

1. Reinstall engine under covers and skid plates using original fasteners
2. Lower vehicle from jack stands
3. Reconnect negative battery cable
4. Clear any diagnostic trouble codes that may have been set during battery disconnection

Verification

• Start the engine and observe for excessive vibration or unusual movement
• With engine running, shift transmission through all gears and verify smooth operation without harsh engagement
• Apply throttle while in Park to approximately 2000 RPM and check for excessive engine movement
• Perform a test drive at various speeds and verify no vibration, particularly during acceleration and deceleration
• Inspect all mount bolts after test drive to ensure they remain tight with no visible movement or loosening

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