Moroso 22017 Moroso Merlin II Block Oil Restrictor Kit w/.0625in Orifice Diameter - 2 PackMoroso 22017 Moroso Merlin II Block Oil Restrictor Kit w . 0625in Orifice Diameter 2 Pack Oil Restrictor Kit. Fits Merlin II blocks, . 0625" orifice diameter. Screws into existing lifter galley cleaning plug holes at back of block. Two per pack Reduces oil flow to upper engine assembly, leaving more oil available for the rod and main bearings Reduces power robbing windage by reducing the volume of oil passing by the rotating assembly on its return to
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