Description
Mercruiser Stainless Steel Thermostat Housing | Sierra 18-1989
Stainless thermostat housing fits various Mercruiser GM 4.3L, 5.7L, 7.4L and 8.2L marine engines.
- Fits various Mercruiser GM 4.3L, 5.7L, 7.4L and 8.2L applications
- Stainless steel construction
- Includes inserts, pipe plugs & thermostat gasket
- Uses Sierra 18-1989K gasket service kit
- Replaces Mercury 87290A4, 8M0061381, & 861006A1
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