Yr 2003 GX470 timing belt replace +90K service
I finally brought my truck to Lexus dealership for the 90K service and timing belt replace package for a whopping $2100 before tax. The timing belt package includes: replace timing belt, replace water pump, crank seal, TB idler bearing, TB tensioner bearing and the accessory belt( is this the serpentine belt?), with super extra long duty coolant. I think the timing belt package parts will cost about less than $700 out of the door, the standard rate for the 90K service only is $562 before tax.
I plan to keep the truck for another 5 years and this is our family out-of-town utility vehicle. It has to be reliable and just need to erase doubt while driving on the road. The same dealership Lexus Fremont-CA who replaced the TB of my wife's ES300, no issue since it is now 119K mi...all I can say is just pay it for a peace of mind.