Rethreaded Brown Top Coolant Sensor (E30 24V Swap) 325i 325e M50 M52 S50 S52
$50
This is an often overlooked item for your 24V E30 swap. If you are swapping an 24V engine (M5x/S5x) in your E30, you will need to use the correct temperature sensor for your temperature gauge to work.