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Thanks - it's pretty ancient so unfortunately not!Check the boiler is not still in warranty. If it is, contact Bosch and they'll do it free.
Reply to the thread, titled "Cost to repairing a leaking Worcester Bosch Combi Boiler flow turbine" which is posted in Boiler Advice Forum on Plumbers Forums.
We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.