What a track rod end does and why it wears out

A track rod end is a ball joint at the end of the rod that connects your steering rack to your wheel hub. It lets your wheel turn left and right while the rod itself moves in and out slightly as your suspension compresses. Over time—usually 50,000 to 100,000 miles, depending on road conditions and driving style—the rubber boot cracks, grease leaks out, and the metal ball wears against its socket until there is play in the joint.

When a track rod end fails, you will notice the steering wheel feels loose or vague, the car pulls to one side, or you hear a clunking sound when turning. A worn track rod end also fails a wheel alignment check and can cause uneven tire wear. Replacing it is a straightforward job that takes 30 to 45 minutes per side with basic hand tools.

Key Takeaways

  • You will need a socket set, a ball joint separator tool (or a hammer and punch), an adjustable wrench, and jack stands—do not work under a car supported only by a jack.
  • The track rod end screws onto the track rod itself, so you must count the threads or measure the distance before removal so you can thread the new one back on in the same position.
  • Wheel alignment is required after replacement because changing the track rod end length alters the toe-in angle, which affects how straight the car drives.
  • The job is the same on both sides, but you only need to replace the side that is worn—have a mechanic check both if you are unsure which one is bad.

Tools and parts you will need

Gather these items before you start. You will need a socket set (usually 13 mm, 14 mm, 15 mm, and 17 mm sockets fit most cars), a ratchet wrench, an adjustable wrench, a ball joint separator tool (a wedge-shaped tool that costs £10–20 and forces the ball joint apart), a hammer, a jack, jack stands, and wheel chocks to stop the car rolling.

If you do not have a ball joint separator, you can use a hammer and a punch or old chisel to tap the steering arm away from the ball joint, though this is slower and requires more force. Some people use a two-leg puller bolted to the steering arm, but a separator is the quickest method.

Buy the correct replacement track rod end for your car's make, model, and year. It will come with a new rubber boot and grease nipple. You may also want a small tube of grease to pack into the new joint before you fit it, though most come pre-greased.

Removing the old track rod end

Loosen the wheel nuts on the side you are working on while the car is still on the ground—this is much easier than trying to loosen them after you have jacked up the car. Then raise the car on a jack and support it securely on jack stands under the frame. Remove the wheel.

Locate the track rod end where it connects to the steering arm (the arm that moves the wheel). You will see a castle nut holding the ball joint stud in place. Use a socket to loosen this nut—usually 17 mm—but do not remove it completely yet. Leave it on by a few threads.

Position your ball joint separator under the castle nut and over the ball joint stud. Tighten the separator's bolt until the wedge forces the steering arm away from the ball joint. The stud will pop out of the socket with a sharp crack. Once it is free, remove the castle nut completely and lift the track rod end away from the steering arm.

Now you need to unscrew the track rod end from the track rod itself. Hold the track rod steady with one adjustable wrench while you turn the track rod end with another wrench. Count how many full turns it takes to unscrew it completely, or measure the distance from the end of the track rod to the inner edge of the track rod end. Write this down—you will need it to thread the new one back on in exactly the same position.

Installing the new track rod end

Thread the new track rod end onto the track rod by hand first, then use your adjustable wrench to tighten it. Turn it the same number of times you counted during removal, or measure to match the distance you recorded. The goal is to put the new end in the same position as the old one so the wheel alignment does not change too much.

Once the track rod end is tight on the rod, guide the ball joint stud back into the hole in the steering arm. Thread the castle nut back on by hand and tighten it with a socket wrench until it is snug—usually 40 to 50 newton-metres of torque, though check your car's manual for the exact figure. Do not over-tighten; you only need it tight enough that it does not move.

Align the slot in the castle nut with the hole in the stud. If they do not line up, tighten the nut a little more until they do. Insert the cotter pin (a split pin that came with the new track rod end or is already in the steering arm) through the hole and bend its legs apart so it cannot fall out. This pin stops the nut from loosening.

Checking your work before driving

Before you lower the car, grab the wheel at the 3 o'clock and 9 o'clock positions and try to move it side to side. There should be no play—no clunking or movement. If the wheel moves, the castle nut is not tight enough; tighten it further and check again.

Spin the wheel by hand to make sure it turns freely and does not rub anywhere. If it does rub, the track rod end may be bent or installed at an angle. Check that the ball joint stud is seated fully in the steering arm socket.

Refit the wheel and tighten the wheel nuts in a star pattern (top, bottom, left, right, then the remaining two) to avoid warping the brake disc. Lower the car onto the ground and tighten the wheel nuts fully with a wrench.

Why wheel alignment matters after replacement

The track rod length controls the toe-in angle—how much the front wheels point inward or outward. Even if you thread the new track rod end back on at the same position, small variations in the new part or the way it sits can shift the toe-in by a fraction of a degree. This is enough to make the car pull to one side or cause the inside edge of the tire to wear faster than the outside.

Take the car to a wheel alignment shop within a few days of the replacement. They will measure the toe-in, camber, and caster angles and adjust the track rod length if needed. Alignment usually costs £40 to £80 and takes 30 minutes. It is not optional—skipping it will cost you in tire wear within a few hundred miles.

Common mistakes to avoid

Do not try to remove the track rod end without counting the threads or measuring first. If you forget how many turns it took to unscrew, you will have to guess when you thread the new one back on, and the wheel alignment will be way off.

Do not work under a car supported only by a jack. Jacks can fail or slip, and a car falling on you is fatal. Always use jack stands rated for your car's weight, and place them under the frame, not under plastic trim or suspension parts.

Do not skip the cotter pin. The castle nut can vibrate loose over time if the pin is missing, and a loose track rod end will cause the wheel to move unpredictably while you are driving.

Do not assume both track rod ends are worn just because one is. Have a mechanic check the other side before you buy parts for it. Sometimes only one side fails, and replacing both when you only need one is a waste of money.

Frequently Asked Questions

Can I drive the car to a garage if the track rod end is worn?

You can drive carefully to a nearby garage, but do not take it on a motorway or a long journey. A very worn track rod end can cause the wheel to move suddenly, especially over bumps, which makes steering unpredictable. If the play is severe, have the car towed.

What is the difference between a track rod end and a tie rod end?

They are the same thing. "Track rod end" is the British term, and "tie rod end" is the American term. The part is identical; the name just depends on where you are.

Do I need to remove the wheel to replace a track rod end?

Yes. The track rod end connects to the steering arm, which is bolted to the wheel hub. You cannot reach it without removing the wheel first.

How long does it take to replace both track rod ends?

If you are doing both sides, allow 60 to 90 minutes total. The second side is usually faster because you have already done one and know the steps. Add another 30 minutes if you have to tap the ball joint apart with a hammer instead of using a separator.

What happens if I do not get a wheel alignment after replacement?

The car will pull to one side, and the inside edge of your front tires will wear much faster than the rest of the tread. You will need new tires within 5,000 to 10,000 miles instead of the normal 30,000 to 40,000 miles. Alignment costs far less than a set of tires.