Mack Low Pressure Switch 1MR2414 745-275083 *Please Verify Your OEM Number Before Purchase Heavy Duty Universal Low Pressure Switch Fits Various Mack Engines Direct Aftermarket Replacement For OEM #s: 1MR2414, 745-275083 Length: 1.87" Pin Count: 2 Thread Size: 1/4"-18 NPT (National Pipe Ta... See More