Thought I'd store this here for my records... even though I found this elsewhere in the forum...

Regular Manufacturer Recommended Maintenance Items:

Reference: http://www.toyota-4runner.org/3rd-ge...reference.html
-RADIATOR- Replace every 100k miles
-TIMING BELT / WATER PUMP- Every 90k miles. This service costs $600-$700 at most dealers. Make sure the seller is up to date on this one!
-TRANSMISSION FLUID- About every 40k miles. At the dealer: $80 transmission service.
-DIFFERENTIAL FLUIDS & ENGINE COOLANT- About every 30k miles. At the dealer: $130 4x4 differentials service.
-LOWER BALL JOINT REPLACEMENT- About every 150k miles. Sooner on lifted vehicles.
-SPARK PLUGS & WIRES- Every 30-40k miles. Less than $50 for everything, easy DIY.
-ENGINE OIL- 3k miles for regular oil, 6k miles for synthetic.
-Everything else like lights and brakes are based on usage and not necessarily miles.

If anyone has additional items, let me know and I'll add them here for reference.