Mishimoto 92-99 BMW 3 Series Aluminum Coolant Expansion Tank

You get a well-built, all-aluminum coolant expansion tank from Mishimoto, complete with a dipstick that also functions as a bleeder. Stock plastic expansion tanks on BMW E36 models can become brittle and fail over time due to constant temperature changes. This Mishimoto tank is constructed from durable, TIG-welded aluminum, designed to handle those temperature swings much better and last longer.

The engineers at Mishimoto included a CNC-machined dipstick that makes it easy to check your cold coolant level accurately, and it doubles as a bleeder to help you get air out of the system. It features a polished finish that adds a clean, custom look to your engine bay. This expansion tank is a direct fit for many BMW E36 models, including the 323i, 325i, 328i, and M3, and it also works with the Mishimoto Performance Fan Shroud Kit.

Installation is straightforward and can typically be done in under an hour. As with all Mishimoto products, this aluminum expansion tank comes with their Lifetime Warranty.