Mishimoto 2023+ Toyota GR Corolla Expansion Tank BlackIntroducing the Mishimoto Coolant Expansion Tank for the 2023+ Toyota GR Corolla. This direct fit solution boasts all aluminum construction that won't yellow, crack, or leak with repeated heat cycles like the stock plastic tank will. Internal baffles prevent air entry during aggressive driving, while a 40 percent increase in coolant capacity improves heat dissipation. The easy access bleed port simplifies air bleeding, saving you time and frustration.