This low oil pressure switch fits Mack applications and measures 2.85 in. wide, 2.85 in. high, and 2.9 in. long. Mounted at the engine block or oil gallery, it senses a drop in oil pressure and signals the warning light or alarm. It is a replacement sold individually.Interchanges:17013240571427A750-32408235-RBE13240MDBE13240ZZBE13240Mack 1MR2225LST-3606FeaturesLow oil pressure switchDimensions: 2.85 in. W x 2.85 in. H x 2.9 in. LSold individually (EACH)Tech SpecsHeight: 2.85 in.Width: 2.85 in.Length: 2.9 in.Unit of measure: EACH