🔧 RX350 - Outer Tie Rod End Replacement

The outer tie rod end connects your steering rack to the steering knuckle and is a common wear item that can cause loose steering, clunking, or uneven tire wear. You’ll remove the old tie rod end, install the new one, and then you must get a front-end alignment to prevent rapid tire wear.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.0 hours (one side)

Assumption: Torque specs listed are the most common for this setup; verify if your new part/service data specifies different values.

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⚠️ Safety & Precautions

• 🛑 Support your RX350 on jack stands—never rely on a floor jack alone.
• Keep hands clear of pinch points while separating the tie rod end from the knuckle.
• Wear eye protection when using a hammer or separator tool.
• No battery disconnect is required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Wheel chocks
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• 21mm socket
• 1/2" drive breaker bar
• 1/2" drive torque wrench (20-200 ft-lbs)
• 19mm combination wrench
• 19mm socket
• Adjustable wrench (12")
• Needle-nose pliers
• Side cutters (diagonal cutters)
• Tie rod end puller (specialty)
• Hammer (16 oz)
• Penetrating oil spray
• Paint marker
• Tape measure
• Shop rags
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Outer tie rod end - Qty: 1 (replace in pairs recommended)
• Cotter pin (tie rod end castle nut) - Qty: 1

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📋 Before You Begin

• Park on level ground, point the front wheels straight, and set the parking brake.
• Place wheel chocks behind the rear tires.
• Break loose the front wheel lug nuts slightly using a 21mm socket and breaker bar before lifting.
• Spray penetrating oil on the tie rod end jam nut and the castle nut area. Let it soak 5–10 minutes.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and remove the wheel

• Lift the front corner with a floor jack (rated 3-ton minimum) at the proper jacking point.
• Set the vehicle onto jack stands (rated 3-ton minimum).
• Remove the lug nuts with a 21mm socket and take the wheel off.

Step 2: Mark your starting position (helps keep toe close)

• Use a paint marker to mark the tie rod threads at the jam nut.
• Use a tape measure to measure from a fixed point (like the end of the threads) to the center of the tie rod end stud; write it down.
• This helps you drive to alignment safely.

Step 3: Loosen the jam nut

• Hold the tie rod end body with an adjustable wrench (12").
• Loosen the jam nut (lock nut) using a 19mm combination wrench.
• Only crack it loose for now—do not spin it far yet.

Step 4: Remove the cotter pin and loosen the castle nut

• Straighten and remove the cotter pin with needle-nose pliers (use side cutters if it’s stubborn).
• Loosen and remove the castle nut using a 19mm socket.

Step 5: Separate the tie rod end from the steering knuckle

• Install a tie rod end puller (specialty) and tighten it until the stud “pops” free.
• If needed, tap the side of the knuckle boss with a hammer (16 oz) while the puller is under tension.
• Do not hit the threaded stud end.

Step 6: Remove the old tie rod end (count turns)

• Spin the tie rod end off the inner tie rod by hand.
• Count the exact number of turns as you remove it, and write the number down.

Step 7: Install the new tie rod end

• Thread the new tie rod end on the inner tie rod the same number of turns you counted.
• Line up your paint mark/measurement as closely as possible.

Step 8: Attach to the knuckle and torque the nut

• Insert the new tie rod end stud into the knuckle.
• Install the castle nut by hand, then tighten using a 19mm socket.
• Torque to 67 Nm (49 ft-lbs).
• If the cotter pin hole doesn’t line up, tighten slightly more until it aligns (never loosen to align).
• Install a new cotter pin using needle-nose pliers, then bend the ends over.

Step 9: Tighten the jam nut

• Hold the tie rod end body with an adjustable wrench (12").
• Tighten the jam nut using a 19mm combination wrench.
• Torque to 74 Nm (55 ft-lbs).

Step 10: Reinstall the wheel

• Reinstall the wheel and hand-thread the lug nuts.
• Lower the RX350 off the jack stands using the floor jack.
• Tighten lug nuts in a star pattern using a torque wrench.
• Torque to 140 Nm (103 ft-lbs).

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✅ After Repair

• Start the engine and turn the steering wheel lock-to-lock to confirm smooth movement and no binding.
• Test drive at low speed first; confirm the steering wheel is close to centered and there are no clunks.
• Get a front-end alignment ASAP (required anytime a tie rod end is replaced).
• Recheck the castle nut/cotter pin and jam nut after a short drive (visual check).

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💰 DIY vs Shop Cost

Shop Cost: $220-$450 (parts + labor + alignment)

DIY Cost: $35-$120 (parts only; alignment extra)

You Save: $100-$300 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-1.5 hours.

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