Sub Radiator Expansion Reservoir Tank
Why This Part Is Important
The expansion reservoir tank is a vital component of your vehicle's cooling system. Its main job is to store excess coolant that escapes from the radiator when the engine heats up. As the engine cools, the coolant is drawn back from the tank, ensuring stable temperature levels and preventing overheating.
How It Works
During engine operation, the coolant expands and pressure rises. This tank collects surplus fluid, preventing coolant loss and maintaining pressure stability. When the engine cools down, the reservoir returns coolant to the radiator, supporting consistent engine performance and protection.
What Happens If Itβs Broken
A cracked or leaking reservoir can cause coolant loss, leading to engine overheating, reduced efficiency, and long-term engine damage. You may notice warning lights or low coolant levels. Immediate replacement is crucial to avoid costly repairs and ensure safe driving.
Compatible Models
- Roadster
- Miata
- Mx-5 Miata
- Mx-5