Here, you are looking at the Mishimoto Aluminum Expansion Tank. This has been made using durable aluminum materials to replace the factory unit to be durable and to provide a nice aesthetic upgrade to the engine bay.
100% aluminum, fully-welded construction for maximum durability during repeated temperature transitions
22% greater coolant capacity than the stock plastic coolant expansion tank
Leak-free welded CNC barb fittings
Fits with stock and Mishimoto radiator caps
Powder-coated wrinkle-black finish
This expansion tank may not fit with the stock air intake "S" hose, an aftermarket intake is recommended for the best fit