After some additional reliability and a touch of engine bay styling?
With the Mishimoto E36 Aluminium Coolant Expansion Tank. The days of replacing your Stock expansion tanks are over. The stock plastic expansion tanks are prone to failure after years of constant temperature variations.
The Mishimoto tank is constructed from durable, TIG-welded aluminium for optimal durability and longevity. complete with a CNC-machined dipstick for proper coolant levels, which doubles as a bleeder making bleeding your new system a breeze.
This expansion tank is a direct fit for the stock and Mishimoto E36 Performance Fan Shroud Kit.
This WILL NOT fit models with a 4 cylinder engine.