All parts › BMW M4 CSL › Cooling system › Coolant hoses
Coolant hoses
Part of Cooling system · about $260 to replace
What it is
Upper and lower radiator hoses plus the turbo feed lines.
What it does
Carry coolant between engine, radiator and expansion tank.
How it fails
Squeeze test: soft or crunchy hoses are due.
| Material | EPDM with aramid reinforcement |
|---|---|
| Spec | Upper 38 mm |
| lower 38 mm |