What is coolant reservoir replacement?
A cracked coolant reservoir is replaced to stop leaks and keep the system pressurised.
The reservoir or expansion tank holds extra coolant. Plastic becomes brittle and cracks with heat, causing leaks and coolant loss.
Signs you need it
- Coolant leaking from the tank
- Visible cracks
- Coolant level drops
How it works
- Drain some coolant
- Replace the reservoir and cap
- Refill and bleed
- Check for leaks
You can choose a workshop visit or have a professional come to your home, work or depot.
How much does it cost?
The exact price depends on your vehicle and the job. On MYLES, each professional shows a fixed price, a starting price, a range, or sends a quote — so you can compare like for like before you book.
- Reservoir price
- Cap and sensor
- Coolant
Tips
- Replace the cap at the same time
- Check coolant level when the engine is cold
Why it matters
Important to keep the cooling system sealed.