thermostat housing, cover and gaskets for the following Mercruiser models with closed cooling:

230 MIE - 1981-1986 - Serial number range 5907058-0B5225505

230/5.0L MIE - 1987-88 - Serial number range 0B522506-0B788151

260 MIE - 1981-86 - Serial Number range 5907058-0B522505

260/5.7L MIE - 1987-93 - Serial number range 0B522506-0F024999

5.7L MIE - 1994-95 - Serial number range 0F025000-0F622099

5.7L MIE - 1996-97 - Serial number range 0F622100-0K999999

330 GM MCM/MIE - 1977-87 - Serial number range 4623115-0B816540

340/7.4L MIE - 1981-92 - Serial number range 5889914-0D715493

7.4L MIE - 1989-94 - Serial number range 0C391564-0D715493

7.4L MIE - 1989-94 - Serial number range 0C391564-0D715493

7.4L MIE - 1989-94 - Serial number range 0C391564-0F349999

7.4L MIE - 1994-96 - Serial number range 0D715494-0F820141

7.4L MIE - 1996-97 - Serial number range 0F820142-0K999999

8.2L MIE - 1990-92 - Serial number range 0C878221-0D857199

8.2L MIE - 1993-96 - Serial number range 0D857200-0F819619

Replaces OEM #55131A5.