Well my replacement power mast lasted about 6 months. Is this one of those parts that the Toyota part is the only good one or is there a good aftermarket brand?
Could also do the Tacoma whip antenna and never worry about it breaking again. That's what I did and I like the way it looks better actually.
Several of us have used masts from an e-Bay seller named raderra. Mine has been working perfectly since the original was replaced in April 2012. Other e-Bay sellers sell masts that don't work. See this thread:
Power antenna fixed but... new issue - Toyota 4Runner Forum - Largest 4Runner Forum
Start at Post #8 and see mine at #12. Don't pay rip-off dealer prices for a mast when a good replacement can be had elsewhere.
He's still selling masts for $18:
Toyota 4 Runner Power Antenna Mast 1996-2002 BRAND NEW | eBay