Click to expand Tap to zoom Viessmann Service Kit for Vitodens 200-W B2HB/-KB/WB2B - 7871991 by VIESSMANN SKU 7871991 Please call to check availability before ordering Live Chat / 01985 850982Consists of burner door gasket, ignition and ionisation probes with gaskets and screws for the bracket of the electrode and gas connection washer Accessories