Sierra Complete Audible Warning Kit (Pressure/Temp)The Sierra Audible Warning Kit has a buzzer that alerts the operator of high engine temperatures or low engine oil pressure. The kit includes instructions, an oil pressure switch (set at 6 PSI), and a temperature switch (set at 200 F).Kit Includes: (1) OP22900 Oil Pressure Switch; (1) TS25101 Temperature Switch; (1) MC33501 Buzzer; Interchangeable With: Cole-Hersee; M40177BP;