BMW M3 Coolant Reservoir Replacement Cost.

The average cost for a Coolant Reservoir Replacement is between $176 and $281. Labor costs are estimated between $123 and $156 while parts are priced between $53 and $125. Estimate does not include taxes and fees.
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Best Practices

We highly recommend replacing the coolant cap when replacing the expansion tank.

Most Common BMW M3 Repairs

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