Mishimoto · New
Mishimoto 2023+ Toyota GR Corolla Expansion Tank Black
MPN MMRT-GRC-23MWBK · Store SKU misMMRT-GRC-23MWBK
Supplier stock checked 11/7/2026, 7:10:37 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Introducing 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. A high-visibility sight glass and stamped cold-fill line allow quick coolant level checks. Choose from micro-wrinkle red or black finishes to match your style. Backed by the Mishimoto Lifetime Warranty, this expansion tank combines performance and aesthetics for a confident driving experience as long as you own your GR Corolla. Engine coolant reservoir designed to store and regulate excess coolant for proper system operation. Durable construction resists heat and pressure, helping prevent leaks and maintain optimal temperature. Aluminum Coolant Expansion Tank, Black, fits Toyota GR Corolla 2023+
Manufacturer fitment & guides
Check MMRT-GRC-23MWBK against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
