Sierra 18-5898 Water Temperature Sender for Mercruiser, Crusader, OMCUsed on most types of marine applications on sterndrive and inboard engines. Fits: MCM/MIE engines; Specifications: Thread Size: 1/2" or 12.7mm -14 NPT; Terminal Type: 10-32 stud; Range: 240 DS; Sender Code "D"; Interchangeable with: Crusader; 700427; Mallory; 9-42401; Medallion; A-2618-4; Mercruiser Stern Drive; 34625; 97258; 97258A1; FI6900152; FI6900198; OMC Inboard; 171960; OMC Stern Drive; 171960; Stewart Warner; 362BB-D; Veethree Seastar; 52320S017;