Housing Thermostat Lower Mercruiser GM 454 7.4L, 502 8.2L V8 Log Style

• OSCMC553-BB is currently unavailable and is replaced by..
• Part #: BARMC-29-78985

$163.95

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Thermostat Base for Mercruiser GM big block V8 with log style or end style manifolds manifolds. This was typically used before 1983 and works with this style exhaust system:

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