A dealership flat rate in their shop is $90/hour in D.C. ??? Here the dealer I went to most recently was $140/hr !! You must've gone to an Indy !! CraigRemove & Replace Water Pump Labor Hours = 3.6
3.6 hrs X $90usd/hr = $324usd
That's the cost I recently paid to have my Timing Belt / Water Pump service.