This item for sale is a Mercury Marine Plug.
Mercury Marine PN: 19-37531
Fits:
110hp GM 153 I/L4 1963-1966 S/N: 1537370 THRU 2044033
120hp GM 153 I/L4 1964-1972 S/N: 1666601 THRU 3377340
120hp GM 153 I/L4 1979-1982 S/N: 5192049 THRU 6229717
120hp GM 153 I/L4 1983-1986 S/N: 6229718 THRU 0B531853
140 GM 181 I/L4 1968-1972 S/N: 2508261 THRU 3332137
140 GM 181 I/L4 1972-1978 S/N: 3332138 THRU 5157668
140 GM 181 I/L4 1979-1982 S/N: 5157669 THRU 6229717
140 GM 181 I/L4 1982-1986 S/N: 6229718 THRU 0B450800
160 GM 250 I/L6 1967-1969 S/N: 2048022 THRU 2770031
165 GM 250 I/L6 1970-1978 S/N: 2770032 THRU 5178958
165 GM 250 I/L6 1979-1981 S/N: 5178959 AND UP
2.5L GM 153 I/L4 1987-1989 S/N: 0B531854 THRU 0C856558
200 GM 292 I/L6 1969 S/N: 2453769 THRU 2712072
3.0L GM 181 I/L4 1 1998 S/N: 0L010042 THRU 0L096999
3.0L GM 181 I/L4 1987-1989 S/N: 0B450801 THRU 0C856558
3.0L GM 181 I/L4 1990-1994 S/N: 0C856559 THRU 0F353099
3.0L GM 181 I/L4 S/N: 0L097000 THRU 0W301999
3.0L GM 181 I/L4 S/N: 0W302000 THRU 1A0019999
3.0L GM 181 I/L4 S/N: 1A002000 THRU 1A020543
3.0L GM 181 I/L4 S/N: 1A020544 & Up
3.0L MPI EC S/N: 1A072812 & Up
3.0L TKS Plus S/N: 1G404114 & Up
3.0LX GM 181 I/L4 1990-1995 S/N: 0C856559 THRU 0F603999
3.0LX GM 181 I/L4 1996-1997 S/N: 0F604000 THRU 0K999999
WARNING: 