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Bard part 5603-010 is an OEM BCR20 orifice with a 0.020 inch diameter, used for precise metering in Bard HVAC fuel or pilot orifice applications where correct flow is critical to stable ignition and proper operation. When an orifice is restricted, damaged, or mismatched, performance problems can show up as hard starts, nuisance lockouts, or improper flame characteristics, so replacing it with the correct Bard factory part helps restore the intended flow rate and reliable burner performance. Confirm your unit model and the required orifice size and stamping (BCR20, 0.020) before ordering to ensure proper fit and safe operation.
* Orders less than $50 may incure a minimum order fee.