🔧 Wrangler - Engine Mount Replacement

Engine mounts hold your Wrangler’s 3.6L V6 securely to the frame while allowing a small amount of rubber cushioning for vibration. Replacing worn mounts helps reduce clunks, shaking, driveline movement, and harsh vibration at idle or when shifting between Drive and Reverse.

Difficulty Level: Intermediate | Estimated Time: 3-5 hours

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⚠️ Safety & Precautions

• ⚠️ Work on a cool engine. Exhaust and engine brackets can burn you.
• ⚠️ Support the engine from below before removing any mount bolts. Never let the engine hang unsupported.
• ⚠️ Use a wide wood block between the floor jack and oil pan to spread the load. Do not jack directly on the bare oil pan.
• ⚠️ Keep fingers out from between the engine mount, brackets, and frame while raising or lowering the engine.
• ⚠️ Replace one side at a time. This keeps the engine aligned and safer to control.
• ⚠️ Disconnecting the battery is recommended because you’ll be working near the starter area and engine harness routing.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 13mm socket
• 15mm socket
• 16mm socket
• 18mm socket
• 21mm socket
• 3/8-inch ratchet
• 1/2-inch ratchet
• 1/2-inch breaker bar
• 3/8-inch extension set
• 1/2-inch extension set
• 18mm wrench
• 21mm wrench
• Torque wrench, 10-150 ft-lb range
• Floor jack, rated 3-ton minimum
• Jack stands, rated 3-ton minimum
• Wheel chocks
• Wood block, approximately 12-inch x 12-inch
• Trim clip removal tool
• Penetrating oil
• Shop light
• Mechanic gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Left engine mount - Qty: 1
• Right engine mount - Qty: 1
• Engine mount through-bolts and nuts - Qty: 2
• Engine mount bracket bolts - Qty: As needed

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📋 Before You Begin

• Park your Wrangler on level ground.
• Shift into Park for automatic transmission or 1st gear for manual transmission.
• Set the parking brake firmly.
• Place wheel chocks behind the rear tires.
• Open the hood and let the engine cool fully.
• Use a 10mm socket to disconnect the negative battery cable. Move the cable away from the battery post.
• Spray penetrating oil on the engine mount fasteners and let it soak for 10-15 minutes.
• A through-bolt is the long bolt that passes through the center of the rubber engine mount.
• A torque wrench is a tool that tightens bolts to the correct tightness so they are not loose or over-tightened.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Raise and Support the Wrangler

• Use a floor jack, rated 3-ton minimum to lift the front of your Wrangler from the front axle tube or front frame crossmember area.
• Place jack stands, rated 3-ton minimum under the frame rails.
• Lower the Wrangler gently onto the jack stands.
• Keep the floor jack nearby because it will be used to support the engine.
• Shake gently to confirm stability.

Step 2: Remove Lower Access Items

• If equipped with a lower splash shield or aftermarket skid plate, use a 13mm socket or 15mm socket to remove the retaining bolts.
• Use a trim clip removal tool for any plastic push clips.
• Set all bolts and clips aside in order.

Step 3: Support the Engine

• Place the wood block, approximately 12-inch x 12-inch on the saddle of the floor jack, rated 3-ton minimum.
• Position the wood block under the flat, reinforced area of the engine oil pan.
• Raise the jack slowly until the wood just contacts the oil pan.
• Lift only enough to take engine weight off the mounts. Do not raise the vehicle body.
• Small movements are safer.

Step 4: Loosen the Left Engine Mount Through-Bolt

• Start on the left side of the engine bay, driver side on a U.S.-market Wrangler.
• Use an 18mm socket and 18mm wrench to loosen the engine mount through-bolt and nut.
• If the bolt is tight, use a 1/2-inch breaker bar with the 18mm socket.
• Do not fully remove the bolt until the engine is safely supported.

Step 5: Remove the Left Engine Mount Fasteners

• Use a 15mm socket, 16mm socket, or 18mm socket as fitted to remove the mount-to-frame fasteners.
• Use a 3/8-inch extension set or 1/2-inch extension set to reach bolts blocked by the frame or engine accessories.
• Remove the through-bolt completely with the 18mm socket and 18mm wrench.
• Raise the engine slightly with the floor jack until the mount can slide out.
• Watch hoses, wiring, fan shroud clearance, and exhaust clearance while lifting.

Step 6: Install the New Left Engine Mount

• Position the new left engine mount in the same orientation as the old mount.
• Lower or raise the engine slightly with the floor jack until the bolt holes line up.
• Install the mount-to-frame bolts by hand first to avoid cross-threading.
• Install the through-bolt and nut by hand.
• Use the 15mm socket, 16mm socket, or 18mm socket to snug the mount-to-frame bolts.
• Use the 18mm socket and 18mm wrench to snug the through-bolt.
• Do not fully torque yet. Final torque is done after both mounts are installed and the engine is settled.

Step 7: Loosen the Right Engine Mount Through-Bolt

• Move to the right side of the engine bay, passenger side on a U.S.-market Wrangler.
• Use an 18mm socket and 18mm wrench to loosen the right engine mount through-bolt and nut.
• Use a shop light to check for wiring, A/C lines, and exhaust heat shield clearance.
• If needed, use a 1/2-inch breaker bar with the 18mm socket.

Step 8: Remove the Right Engine Mount Fasteners

• Use a 15mm socket, 16mm socket, or 18mm socket as fitted to remove the mount-to-frame fasteners.
• Use the 3/8-inch extension set or 1/2-inch extension set for better reach.
• Remove the through-bolt with the 18mm socket and 18mm wrench.
• Raise the engine slightly with the floor jack only as much as needed to remove the mount.
• Never force the mount out.

Step 9: Install the New Right Engine Mount

• Set the new right engine mount into place in the same orientation as the old mount.
• Adjust the engine height slowly with the floor jack until the holes align.
• Start all bolts and the through-bolt by hand.
• Use the 15mm socket, 16mm socket, or 18mm socket to snug the mount-to-frame bolts.
• Use the 18mm socket and 18mm wrench to snug the through-bolt and nut.

Step 10: Settle the Engine Before Final Tightening

• Slowly lower the floor jack until the engine weight rests fully on both new mounts.
• Check that both mounts sit flat and are not twisted.
• Gently rock the engine by hand from the top of the engine bay. Use your hands only, not a pry bar.
• Confirm that the fan shroud, hoses, wiring, and exhaust parts are not touching anything they should not touch.

Step 11: Torque the Engine Mount Fasteners

• Use a torque wrench, 10-150 ft-lb range with the correct socket for each fastener.
• Tighten the engine mount through-bolts to Torque to 95 Nm (70 ft-lbs).
• Tighten the engine mount-to-frame fasteners to Torque to 68 Nm (50 ft-lbs).
• If a bracket was loosened from the engine block, tighten those bracket bolts to Torque to 68 Nm (50 ft-lbs).
• Torque slowly and evenly.

Step 12: Reinstall Lower Access Items

• Reinstall any splash shield or skid plate removed earlier.
• Use a 13mm socket or 15mm socket to tighten the retaining bolts.
• Reinstall plastic clips using your hands or a trim clip removal tool.

Step 13: Reconnect the Battery and Lower the Wrangler

• Use a 10mm socket to reconnect the negative battery cable.
• Use the floor jack, rated 3-ton minimum to lift the front slightly off the jack stands.
• Remove the jack stands, rated 3-ton minimum.
• Lower your Wrangler carefully to the ground.

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✅ After Repair

• Start the engine and let it idle.
• Look for abnormal vibration, clunks, or contact between the engine and nearby parts.
• With your foot firmly on the brake, shift from Park to Reverse and then Drive. Listen for clunks.
• Take a short, gentle test drive.
• After the test drive, recheck the mount area with a shop light for loose bolts or shifted parts.
• If the battery was disconnected, reset the clock and radio presets if needed.

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💰 DIY vs Shop Cost

Shop Cost: $550-$950 (parts + labor)

DIY Cost: $120-$300 (parts only)

You Save: $430-$650 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2.5-4.0 hours.

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🎯 Ready to get started?

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