This direct-fit aluminum coolant expansion tank replaces the stock plastic tank on the 2023-2024 Toyota GR Corolla, which can yellow, crack, or leak with repeated heat cycles. All-aluminum construction adds a 40% increase in coolant capacity over stock, while internal baffles keep coolant near the overflow port to prevent air entry during aggressive driving. An easy-access bleed port, high-visibility sight glass, and stamped cold-fill line make level checks and bleeding simple.
| Type | Direct-fit coolant expansion tank |
| Material | All-aluminum, welded |
| Finish | Micro-Wrinkle Black |
| Fitment | Direct fit, 2023-2024 Toyota GR Corolla |
| Features | Internal baffles, easy-access bleed port, sight glass, stamped cold-fill line |
| Part Number | MMRT-GRC-23MWBK |
| Warranty | Mishimoto Lifetime Warranty |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2024 | Toyota | GR Corolla | Circuit Edition |
| 2023-2024 | Toyota | GR Corolla | Core |
| 2023 | Toyota | GR Corolla | Morizo Edition |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
