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1 - O-Ring 19x2 - 875827

4 - Seal Ring 21.5/15.5 - 875757

8 - Flange Nut M5 (2 Per Boiler) - 312027

10 & 15 - Clip (2 Per Boiler) - 873027

11 - Ignition Module Siemens TQG43 - 801537

16 - Gas Air Module 406 - 829547

16 - Gas Air Module 362 - 829527

17 - O-Ring 15x2 NBR 70sh - 875737