MerCruiser 807988-C 807988A2 Closed-Cooling Exhaust Riser 5.7L 350 7.4L 454 Pulley - Crankshaft Mercury 64106 / 76303 Water

Mercury 64106 / 76303 Water Jacket Baffle Cover (Stamped 76302) Found on Mercury 850 4cyl 85hp 4cyl outboards SN 3493913-4366801 (Roughly 1973-1975ish)

1972 1973 1974 1975 1976 1977 188hp Stern Drive Alpha One 175hp OMC

Water Temperature Tested OK

Overall with ends is about 14 1/4

MerCruiser 807988-C 807988A2 Closed-Cooling Exhaust Riser 5.7L 350 7.4L 454 Pulley - Crankshaft Mercury 64106 / 76303 WaterPart Number(s) Included MerCruiser 807988 C Exhaust Manifold Riser (You get the SINGLE RISER as pictured) Superseded Equivalent Possibly Related P N: 807988A2 807988A03 From a Closed Cooling Setup, (No front water inlet, scaling on the inside) General Application Compatibility Specifically, ths particular riser was from a Closed Cooling Configuration from 1996 1998 as it doesn't have a fitting on the front for a water hose 5. 0L 305 5. 7L 350 260hp 7.