Review on 059919501A Engine Coolant Sensor Audi by Carl Higdem

B5 '00 Audi S4 - weak part (Coolant Temp Sensor) - I have replaced it several times. This one fits perfectly and works great. It probably won't last forever, but we'll see. Make sure you install it correctly (tightly) with the included O-ring installed from the bottom and the C-clamp correctly. You'll have to move the intake hose to get there because you'll spill some coolant. So top up coolant before replacing it!