Replacement Fan Override Switch For Peterbilt 79PSL3-4 Camshaft / Crankshaft Position Sensor and port sizes / locations

and port sizes / locations against the reservoir being replaced before ordering

Use Fleetguard filter head 4990861

Donaldson: P551122

9L Cummins

Cummins X12 / ISX12 (11

Replacement Fan Override Switch For Peterbilt 79PSL3-4 Camshaft / Crankshaft Position Sensor and port sizes / locationsAftermarket fan override pressure switch for Peterbilt and Kenworth A C systems, replacing 79PSL3 4, P27 1051, MEI Air Source 1310, and Red Dot RD5 4625 0. Normally closed switch opens at 310 psi and closes at 240 psi for R134a refrigerant, with a 2 pin connector and female M10 1. 25 mounting thread. Signs You Need a New Fan Override Switch A C system fails to maintain cabin temperature on hot days Engine fan does not engage during high pressure A C