OEM MerCruiser Exhaust Riser mounting bolts (extended) (63/4")

Fits 4.3 , small block, and big block MerCruiser engines with 4" Riser Elbows

Will not work for dry joint (2002+)

ONLY for riser mounted remote oil filter!usually 2x per engine

You will need this x2 for one side (with the oil filter)

Please confirm fitment of MerCruiser parts with your serial number
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