Sierra OP24301 Oil Pressure SenderSierra replacement oil pressure sender. Thread Size: 1/8-27; Teminal Type: 10-32 stud; Range: 100 psi; Sender Code "C"; Range-1 Gauge: 240 Ohms at 0 PSI; Range-1 Gauge: 200 Ohms at 10 PSI; Range-1 Gauge: 160 Ohms at 20 PSI; Range-1 Gauge: 140 Ohms at 30 PSI; Range-1 Gauge: 120 Ohms at 40 PSI; Range-1 Gauge: 100 Ohms at 50 PSI; Range-1 Gauge: 90 Ohms at 60 PSI; Range-1 Gauge: 75 Ohms at 70 PSI; Range-1 Gauge: 60 Ohms at 80 PSI; Range-1 Gauge: 45 Ohms at 90 PSI; Range-1 Gauge: 33 Ohms at 100 PSI; Interchangeable with: Datcon; 02505-00; Faria; 90519; Medallion; A-2547-1; Mercruiser Stern Drive; 850362; Stewart Warner; 279B-F; VDO; 360 811; Veethree Seastar; IA15016;