A Guide to Replacing Rear Lateral Arms on Your 2015-2019 Toyota Highlander
Learn the signs of a failing rear lateral arm and how to choose the right aftermarket part for your Highlander.
- A clunking noise from the rear over bumps is the most common symptom of a failing lateral arm.
- Always get a four-wheel alignment immediately after replacing one or both lateral arms to prevent tire damage.
- For balanced handling, it is best practice to replace lateral arms in pairs (left and right).
- Aftermarket brands like Dorman and Mevotech offer a cost-effective alternative to OEM parts for this repair.
Is Your Highlander Making Noise from the Rear?
A failing lateral arm is a common issue as a vehicle ages. The rubber bushings at either end of the arm wear out, crack, or break down. When this happens, it allows for excess movement in the suspension, leading to noticeable problems. Ignoring these symptoms can lead to poor handling and accelerated wear on your tires.
Symptoms of a Bad Lateral Arm
- Clunking or Knocking Noises: The most common sign is a clunking or rattling sound from the rear of the vehicle, especially when going over bumps or uneven roads. 🎬 Watch: Hear what a rattling rear suspension sounds like. This is caused by the worn bushings allowing metal-to-metal contact.
- Loose or Vague Steering: You might feel like the rear of the Highlander is wandering or swaying, making the vehicle feel less stable. This requires you to make more steering corrections to keep the car straight.
- Uneven Tire Wear: A bad lateral arm will throw off the rear wheel alignment. Check your rear tires for wear on the inner or outer edges, which is a classic sign of alignment problems caused by worn suspension parts.
Choosing the Right Aftermarket Lateral Arm
When replacing a lateral arm on your Highlander, you don't have to buy the expensive OEM part from the dealer. Aftermarket brands offer a more affordable solution. For the 2015-2019 Highlander, Dorman and Mevotech are two common choices.
- Dorman: Dorman is a widely available brand that provides replacement-grade parts. They are a cost-effective option for daily driving and are generally designed for easy installation. While functional, some professional mechanics note their longevity may not always match that of premium or OEM parts.
- Mevotech: Mevotech often offers a good balance of quality and affordability. They are known for innovative designs and are a popular choice for many drivers. If available, their "Supreme" or "TTX" lines offer enhanced durability over their standard-grade parts.
Replacement Cost for 2015-2019 Highlander
The cost to replace a lateral arm can vary based on your location and whether you do the work yourself or use a professional shop. A wheel alignment is required after the job is done, so factor that into your total cost.
🎬 Watch: DIY replacement guide including all necessary torque specs.| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Lateral Arm (Dorman, Mevotech) | $55 - $92 |
| New OEM Toyota Lateral Arm | $100 - $145 |
| Shop Labor (per side) | $125 - $225 |
| Four-Wheel Alignment | $100 - $200 |
Frequently Asked Questions (FAQ)
Do I need a wheel alignment after replacing a lateral arm?
Yes, absolutely. Replacing a lateral arm will always change the rear wheel alignment settings. You must have a four-wheel alignment performed immediately after the replacement to prevent rapid and uneven tire wear and to ensure the vehicle handles safely.
Can I replace just the bushings instead of the whole arm?
While it is sometimes possible to press out old bushings and install new ones, it requires special tools and is often more labor-intensive than simply replacing the entire arm assembly. 🎬 See this walkthrough on how to replace the control arms. For most DIY mechanics and even many shops, replacing the complete arm is faster, easier, and more reliable.
What's the difference between a lateral arm and a trailing arm?
Both are parts of the rear suspension. A lateral arm primarily controls side-to-side (lateral) wheel movement. A trailing arm controls front-to-back wheel movement. Your Highlander has a multi-link suspension that uses several arms, including both lateral and trailing arms, to precisely control the wheel's position.
Are there any recalls for the 2015-2019 Highlander suspension?
As of early 2026, there are no specific open recalls for the lateral arms on the 2015-2019 Toyota Highlander. There was a TSB for a squeaking noise from the rear trailing arm bushings, but not a safety recall for the lateral arms.
Helpful Videos
Technical Specifications
OEM Part Numbers: 48730-48160 48730-0E030 48710-0E060
The rear suspension on the 2015-2019 Toyota Highlander is a multi-link design. The lateral arms are non-adjustable steel arms with rubber bushings pressed into each end. Replacement requires basic hand tools, a jack and jack stands, and a torque wrench. A wheel alignment is mandatory post-installation.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Toyota Highlander: