I have an 03 4.4i at 96000 (built 06/03). At 88k I did the water pump. At 95k the Torque converter broke and formed to do the gearbox overhaul. At the same time I did the valley pan gasket and changed the coolant tank and the fan clutch.

I am getting ready to change the front struts and the front suspension bushings. Still not clear to me is when I will tackle the chain guides and valve cover gaskets.

The engine is running better than ever at this point!

Good luck with your 03!

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.