🔧 NX - Engine Mount Replacement

Your NX uses multiple mounts to hold the engine/transmission in place and absorb vibration. When a mount cracks or collapses, you’ll feel clunks on takeoff, extra vibration at idle, or banging during shifts.

Difficulty Level: Advanced | Estimated Time: 3-6 hours

Assumption: stock NX200t with standard 3-mount layout (right, left, rear).

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⚠️ Safety & Precautions

• ⚠️ Support the engine before removing any mount; the engine can drop suddenly.
• ⚠️ Never rely on a floor jack alone; use jack stands under the pinch welds/subframe.
• ⚠️ Keep hands clear between mount brackets and body while raising/lowering the engine.
• ⚠️ Let the engine cool; you’ll be working near hot turbo/exhaust parts.
• ⚠️ Battery disconnect is recommended if you’ll remove the battery tray/ECU area components.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Mechanic gloves
• Wood block (2x6 in. minimum)
• Engine support bar (specialty)
• Metric socket set (8mm-19mm)
• Metric wrench set (10mm-19mm)
• 3/8 in. ratchet
• 1/2 in. breaker bar
• Torque wrench (10-200 N·m / 7-150 ft-lbs)
• Extensions (3 in. and 6 in.)
• Universal joint adapter
• Trim clip removal tool
• Flathead screwdriver
• Pliers
• Fender cover
• Work light
• Paint marker

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Right (passenger-side) engine mount - Qty: 1
• Left (driver-side) transmission mount - Qty: 1
• Rear engine mount (torque mount) - Qty: 1
• Engine mount fastener kit (if required) - Qty: 1

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Open the hood and install a fender cover to protect paint.
• Disconnect the negative battery terminal using a 10mm socket if you’ll work near the battery/ECU area.
• Plan your engine support method:
  • If using an engine support bar (specialty): it holds the engine from above.
  • If using a floor jack: place a wood block between jack pad and oil pan to spread the load. (The wood prevents denting the oil pan.)
• Remove the lower engine undercover/splash shield using a trim clip removal tool and 10mm socket.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Support the engine

• Lift the front of your NX with a floor jack (rated 3-ton minimum) and set it on jack stands (rated 3-ton minimum).
• Position the floor jack under the engine oil pan area and place the wood block between the jack and pan.
• Jack up gently until you see the engine weight “just” supported. Do not lift the vehicle off the stands.
• Only take the weight—don’t raise the engine yet.

Step 2: Remove access components (as needed)

• Remove the plastic engine cover by lifting it off (hands only).
• If the right mount area is blocked, loosen/remove intake ducting using a flathead screwdriver and 10mm socket.
• If the left mount area is blocked, remove the battery and/or tray as needed using a 10mm socket and 12mm socket.
• Unclip harnesses/brackets near mounts using a trim clip removal tool and pliers so nothing is stretched.

Step 3: Replace the right (passenger-side) engine mount

• Locate the right mount near the passenger-side frame rail.
• Mark the mount/bracket position with a paint marker for easier alignment.
• Remove the mount-to-body nuts/bolts using a 14mm socket (sizes may vary slightly by hardware).
• Remove the mount-to-engine bracket bolts using a 14mm socket, extensions (3 in. and 6 in.), and a universal joint adapter as needed.
• Slowly raise/lower the engine a small amount with the floor jack until the mount slides out without forcing it.
• Install the new mount in the same orientation. Hand-start all fasteners to avoid cross-threading.
• Tighten fasteners evenly and finish with a torque wrench: Torque to OEM spec.
• If holes don’t line up, adjust engine height slightly.

Step 4: Replace the left (driver-side) transmission mount

• Locate the left mount at the driver-side frame rail/transmission side.
• Support remains on the engine; you may need tiny height changes with the floor jack to unload the mount.
• Remove mount-to-body bolts using a 14mm socket.
• Remove mount-to-transmission bracket bolts using a 14mm socket and extensions (3 in. and 6 in.).
• Remove the mount. Install the new mount and hand-start all bolts.
• Snug all bolts, then torque with a torque wrench: Torque to OEM spec.

Step 5: Replace the rear engine mount (torque mount)

• The rear mount is typically accessed from underneath, near the rear of the engine/transmission assembly.
• Remove any braces or small covers in the way using a 12mm socket and 14mm socket.
• Remove the rear mount bolts using a 14mm socket and a breaker bar if tight.
• Adjust engine height slightly with the floor jack to relieve tension and slide the mount out.
• Install the new rear mount, hand-start bolts, then torque using a torque wrench: Torque to OEM spec.

Step 6: Reassemble and final-tighten (loaded position)

• Reinstall any removed intake parts, battery tray, battery, and brackets using your 10mm socket and 12mm socket.
• Reinstall the splash shield using a trim clip removal tool and 10mm socket.
• Lower the engine support slowly with the floor jack until the engine rests naturally on the mounts.
• Re-check mount fasteners with a torque wrench: Torque to OEM spec.
• Reconnect the negative battery terminal using a 10mm socket: Torque to OEM spec.

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✅ After Repair

• Start the engine and let it idle. Listen for clunks, knocking, or excessive vibration.
• With your foot on the brake, shift through P-R-N-D briefly and feel for abnormal movement.
• Take a short test drive. Recheck for new noises on acceleration and deceleration.
• After the drive, inspect mounts visually for proper seating and check that no hoses/wires are rubbing.

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💰 DIY vs Shop Cost

Shop Cost: $700-$1,600 (parts + labor)

DIY Cost: $200-$700 (parts only)

You Save: $500-$900 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-6 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.