Professional-grade pump diaphragm manufactured by SSC, part number S-066.
EXACT OEM MATCH: Direct drop-in replacement for Suntec 3773151 and GS-165, ensuring perfect compatibility with A-Series oil burner pumps.
PRECISION 1-3/4" OD FIT: Engineered with an exact 1-3/4 inch outer diameter to guarantee accurate sealing and dependable, leak-free operation.
PRESSURE CONTROL: Maintains steady oil pressure and consistent performance, eliminating erratic pump cycling and inconsistent combustion.
DURABLE CONSTRUCTION: Manufactured from premium, fuel-resistant materials designed to withstand the harsh conditions of commercial heating environments.