Review on 🔧 Enhanced Coolant Expansion Tank Bleeder Screw Replacement for BMW E46 E92 E90 E36 E39 Mini Cooper 17111712788 by Andrew Gomez

Plastic parts wear out over time due to heat build-up in the engine compartment. Somehow my factory plastic air vent leaked through the center hole. I found this upgrade replacement that survives the expansion tank. As it is made of brass, care must be taken not to over tighten the screw and damage the threads on the tank or the tank itself. Your choice, OEM plastic or solid brass, the price is almost the same. The difference won't hit the wallet.