OMC 911699 0911699 Cobra Water Pump Adapter Plate Upper Gearcase Housing 1986-93 NOS This is easily identified by

This is easily identified by the square motor housing and the black fill plug

Found in Mark 6 & 6A (and possibly others)

Bolts: 303423

These were used for mercury 80hp for 1970

but seems that this was used on quite a few 280 & 290 model sterndrives

OMC 911699 0911699 Cobra Water Pump Adapter Plate Upper Gearcase Housing 1986-93 NOS This is easily identified byPart Number(s) Included OMC 911699 0911699 Upper Gear Housing Water Pump Housing Adapter Plate. General Application Compatibility This would have been found on all of the standard OMC Cobra models 1986 1993 (and some of the "Baby King Cobra" models 1986 1989) regardless of engine configuration. I. E. 4cyl 2. 3L Ford 4cyl 2. 5L 120hp 3. 0L 140hp 4. 3L V6 190hp 205hp 5. 0L 305 V8 5. 7L 350 260hp V8 5. 0L 302 Ford 5. 8L 351 Ford 7. 5L 460 Ford Other