Complete replacement of all engine and transmission mounts on the 3.5L EcoBoost V6, including left and right engine mounts, rear engine mount, and transmission mount.

Warnings

Tools required

Parts

• Left engine mount × 1 — Ford FL3Z-6038-A or equivalent
• Right engine mount × 1 — Ford FL3Z-6038-B or equivalent
• Rear engine mount × 1 — Ford FL3Z-6068-A or equivalent
• Transmission mount × 1 — Ford FL3Z-7M121-A or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery cable and wait 5 minutes for airbag system to discharge
3. Raise vehicle and support securely on four jack stands at frame contact points
4. Remove engine under-shield/splash guards if equipped
5. Apply penetrating oil to all mount bolts and allow to soak for 15-20 minutes
6. Position engine support bar across fender aprons or prepare transmission jack with block of wood to support oil pan

Procedure

1. 1

   Support the engine and transmission
   Install engine support bar across the engine compartment, positioning it on the fender aprons. Attach lifting chain or strap to engine lifting eyes. Raise support bar just enough to take slight tension on engine weight, but do not lift engine yet. Alternatively, position transmission jack with wood block under transmission oil pan for additional support.
2. 2

   Remove right engine mount
   From below the vehicle, locate the right engine mount between the engine block and frame rail. Remove the mount through-bolt first. Then remove the three engine mount-to-block bolts and the mount-to-frame bolts. Slightly raise the engine with the support bar if needed for clearance. Remove the mount assembly from the vehicle.
   Torque spec

   Mount Through Bolt101 Nm (75 lb-ft)

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

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

   Remove left engine mount
   Locate the left engine mount on the driver's side between engine block and frame. Remove the mount through-bolt. Remove the engine mount-to-block bolts and mount-to-frame bolts. Use the engine support to slightly adjust engine position if needed for bolt access. Remove the left mount assembly.
   Torque spec

   Mount Through Bolt101 Nm (75 lb-ft)

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

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

   Remove rear engine mount
   Access the rear engine mount from underneath the vehicle, located between the engine and transmission bellhousing area. Remove the through-bolt first. Remove the mounting bolts securing the mount to the engine block and crossmember. Carefully lower or raise engine slightly using support bar if necessary to remove mount. Extract the rear mount from the vehicle.
   Torque spec

   Through-Bolt85 Nm (63 lb-ft)

   Mounting Bolts55 Nm (40 lb-ft)
5. 5

   Remove transmission mount
   Locate the transmission mount underneath the transmission near the crossmember. Place additional support under transmission if not already supported. Remove the transmission mount bolts securing mount to transmission. Remove the mount-to-frame bolts securing mount to crossmember. Lower or raise transmission slightly if needed for clearance. Remove transmission mount assembly.
   Torque spec

   Transmission Mount Bolts65 Nm (48 lb-ft)

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

   Inspect mounting surfaces
   Clean all mounting surfaces on engine block, transmission, and frame rails using wire brush. Inspect for cracks, damage, or elongated bolt holes. Check that all mounting surfaces are flat and free of corrosion. Inspect heat shields if equipped and replace if damaged. Verify new mounts match old mounts exactly before installation.
7. 7

   Install new transmission mount
   Position new transmission mount onto crossmember. Start mount-to-frame bolts hand-tight. Align transmission to mount and start transmission mount bolts hand-tight. Use support jack to adjust transmission height for proper alignment. Torque mount-to-frame bolts first, then transmission mount bolts to specification.
   Torque spec

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

   Transmission Mount Bolts65 Nm (48 lb-ft)
8. 8

   Install new rear engine mount
   Position new rear engine mount between engine and crossmember. Start all mounting bolts hand-tight. Adjust engine position with support bar to align mount holes properly. Torque mounting bolts to specification, then install and torque through-bolt last.
   Torque spec

   Mounting Bolts55 Nm (40 lb-ft)

   Through-Bolt85 Nm (63 lb-ft)
9. 9

   Install new left engine mount
   Position new left engine mount on frame rail. Start mount-to-frame bolts hand-tight. Adjust engine position using support bar to align engine mounting holes. Start engine mount-to-block bolts hand-tight. Torque engine mount-to-frame bolts first, then engine mount-to-block bolts. Install and torque mount through-bolt last.
   Torque spec

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

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

   Mount Through Bolt101 Nm (75 lb-ft)
10. 10

    Install new right engine mount
    Position new right engine mount on frame rail. Install and hand-tighten mount-to-frame bolts. Use engine support bar to position engine for proper alignment. Install and hand-tighten engine mount-to-block bolts. Torque engine mount-to-frame bolts to specification, then engine mount-to-block bolts. Install and torque mount through-bolt to specification last.
    Torque spec

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

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

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

    Remove engine support and final checks
    Carefully and slowly remove engine support bar or lower transmission jack, allowing engine and transmission weight to settle onto new mounts. Verify all bolts are torqued to specification. Check that engine sits level and centered in engine bay. Reinstall any heat shields or covers removed during mount access.

Reassembly

1. Reinstall engine under-shields and splash guards
2. Lower vehicle from jack stands
3. Reconnect negative battery cable
4. Allow vehicle to settle for 5 minutes before starting

Verification

• Start engine and verify it idles smoothly without excessive vibration
• Check that engine does not contact frame or other components during idle
• Rev engine gently to 2000-3000 RPM and verify no abnormal movement or contact
• Perform visual inspection underneath vehicle to confirm all mounts are seated properly and no bolts are loose
• Test drive vehicle and verify smooth operation with no vibration during acceleration, deceleration, or gear changes
• Recheck all mount bolt torque after 50-100 miles of driving

More procedures for this vehicle