Auto transmission thermostat.

Water pump pulley.

Serpentine belt idler.

Belt tensioner pulley (no need to replace the entire tensioner).

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2007 BMW X5 4.8i - Sport Package, Wife's Car

2001 BMW 325i - My Car.

2005 Ford Excursion Limited 4x4, 6.0 Powerstroke Diesel. My first "grown up" car.