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Mercruiser 27-8637251 Wet Joint Block Off Exhaust Riser Gasket Replacement
Replaces Mercruiser 27-8637251, 860231, 863725, 8637251
Used on Mercruiser engine:
GM V6 4.3L, GM V8 small block 5.0L, 5.7L & 6.2L, V8 big block 7.4L & 8.2L CLOSED COOLED engines with wet joint exhaust manifold and risers.
This is a non OEM part REC 27-8637251