Replaces Part #’s: 23-47508T, 47508T, 13250 Includes: 1x Brass Sleeve For Use On 1983 -1996 MerCruiser V6 and V8 GM Engines That Use a 140 Degree Thermostat For Use On Many MerCruiser Models See Fitment Chart Below For Use On The Following MerCruiser Models: 185 / 229 (V6) / 6330183 - 6919655 / 1983 - 1984 175 / 262 (V6) / 0B527955 - 0B773242 / 1987 185 / 262 (V6) / 0A331455 - 0B527954 / 1985-1986 205 / 262 (V6) / 0B527955 - 0B775129 / 1985-1987 4.3L / 262 (V6) / 0B773243 - 0F601126 / 1987-1995 898 / 305 (V8) / 6218462 - 689905 / 1983-1984 200 / 305 (V8) / 6899058 - 0B774444 / 1985-1987 228 / 305 (V8) / 6218462 - 6899268 / 1982-1984 230 / 305 (V8) / 6899269 - 0B773739 / 1985-1987 230 MIE / 305 (V8) / 5907058 - 0B78151 / 1981-1987 5.0L / 305 (V8) / 0B774445 - 0F600999 / 1988-1995 5.0L MIE / 305 (V8) / 0B788152 - 0C396832 / 1988 5.0LX / 305 (V8) / 5907058 - 0F600999 / 1988-1995 260 / 350 (V8) / 6218462 - 0B788151 / 1982-1987 260 MIE / 350 (V8) / 5907058 - 0B788151 / 1981-1987 300 / 350 (V8) / 6668677 - 0B430367 / 1985-1986 300 Mag / 350 (V8) / 0A635178 - 0F600999 / 1986-1995 350 Mag Ski / 350 (V8) / 0D505450 - 0K040399 / 1991-1996 5.7L / 350 (V8) / 0B773305 - 0F600999 / 1988-1995 5.7L MIE / 350 (V8) / 0B788152 - 0F600999 / 1988-1995 5.7L Ski / 350 (V8) / 0A338533 - 0F775199 / 1985-1995 330 MIE / 454 (V8) / 6083145 - 0B816540 / 1982-1987 340 MIE / 454 (V8) / 5889914 - 0B788365 / 1981-1987 370 / 454 (V8) / 6721528 - 0B714586 / 1985-1987 454 Mag Alpha/Bravo / 454 (V8) / 0A631894 - 0F304999 / 1986-1994 525 SC / 454 (V8) / 0D456000 - 0L415623 / 1991-1999 7.4L / 454 (V8) / 0B771113 - 0F351999 / 1988-1994 7.4L MIE / 454 (V8) / 0B788366 - 0F349999 / 1988-1994 390 MCM & MIE / 482 (V8) / 2781129 - 3042731 / 1969-1970 460 / 482 (V8) / 4179554 - 6181046 / 1983-1986 465 / 502 (V8) / 0C849992 - 0F213244 / 1990-1994 500, 500 EFI / 502 (V8) / 0F213293 & UP / 1994-2004 502 Mag / 502 (V8) / 0C878221 - 0F114528 / 1990-1993 8.2L MIE / 502 (V8) / 0C878221 - 0D857199 / 1990-1992 8.6L 540 CID Stroker 4V (1G400000 - 1G499999) 6.2L 377 CID V8 GM 6.2L 377 CID Scorpion (0L416146 - 0M907201) 8.2L 502 CID V8 GM 8.2L 502 CID EFI (0L001496 - 0L306499) 8.2L 502 CID V8 GM 8.2L 502 CID EFI (0L306500 - 0L307027)