a. 2007 328i sedan w/manual transmission
b. Water pump actually failed at 124,732 miles
c. $410.09 (USD) w/shipping for the pump, thermostat, connecting hose, and bolts.
d. I did the work myself.
e. Yes, the thermostat sensor plug wire broke off and I needed to replace the plug and wire, took a bit to find and assemble, cost an additional $15 USD for parts and shipping.
f. Infrequent (e.g. once per year) track days, previously autocrossed
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