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Bard 9021-004 is an OEM two stage oil pump rated for 3450 RPM, used on Bard oil fired heating equipment to supply stable fuel oil flow and pressure to the burner for clean, dependable combustion. A properly functioning pump is critical for consistent ignition, smooth flame operation, and preventing nuisance lockouts caused by poor oil delivery. This Bard pump is built to match original fit and performance specifications, making it the right choice when servicing an oil fired Bard furnace or burner assembly. Verify compatibility by matching your unit model and existing pump details before ordering.