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Bard part 140-198 is an OEM combustion chamber support used in Bard packaged heating equipment to help keep the combustion chamber properly supported and aligned during operation and service. If your unit has heat-related vibration, looseness, or hardware that will not stay tight around the burner and chamber area, replacing the correct support helps restore stable positioning so the burner assembly and combustion components fit as intended. This component is application-specific by model and serial range, so confirm 140-198 against your Bard parts list or service manual before ordering to ensure proper fit.