Common Issues with the 5th Generation Toyota 4Runner: Replacing the 8" Clamshell Front Differential Needle Bearing

The 5th generation Toyota 4Runner is a beast on and off the road, but as it ages, it might start whispering (or rumbling) for some attention. One common issue is the failure of the 8" clamshell front differential needle bearing, which often leads to vibrations or rumbling noises. If you can grab the axle shaft and move it like a loose tooth, it's time for a change. This problem is becoming more frequent as these vehicles rack up miles, but don't worry—replacing the needle bearing isn't rocket science.

2010 Toyota 4Runner SR5 with 189k miles

Why Replacement is Necessary

Ignoring a worn needle bearing could lead to more costly repairs. Think of it as your 4Runner's way of saying, "Hey, I need a little TLC!" Replacing the needle bearing is a straightforward task that can save you from future headaches. Plus, it's a great excuse to bond with your 4Runner—because who doesn't love a good DIY project? So, grab your tools (and maybe some snacks), and give your 4Runner the care it deserves. A happy 4Runner makes for a happy driver!

2016 Toyota 4Runner TRD Pro with 164k miles

Video above does a better job showing the axle removal

Here are the tools and bushing (I would highly recommend the tools too!)

Toyota 4Runner Clamshell Needle Bearing Failure and Fix