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Superseded / Equivalent / Possibly Related P/N: 55429
although the longer pin should technically work with later applications but is not quite the same because of the lack of grooves for the retaining pins
from 1980 to 1990 ( I think this might work with earlier models too)
437966 / 0437966 Idle Screw and Spring Assembly Unsure what this goes on
I'm quite positive that this is what there is as it only looks like they produced 5 different gear pinions of this "look" that basically varied in lengths and some had an extra hole on the bottom for some sort of pin
MerCruiser 87290A4 87110 Thermostat Housing Assembly V8 SBC 5.0L 305 5.7L 350 7.5hp Superseded / Equivalent / PossiblyItem Details Fits Various MerCruiser SMALL BLOCK CHEVY engines, 1987 1994 (V8 5. 0L 305 5. 7L 350) NOT SUITABLE FOR BBC (7. 4L 454 8. 2L 502) APPLICATIONS THAT ALSO HAVE THE 87110 CASTING AS THE HOLES ARE DRILLED IN THE WRONG POSITION. Yours should look just like this. Condition Notes: Overall Good condition Cleaned & Repainted Includes NEW THERMOSTAT & GASKETS Freshwater used part Major Parts included as pictured: Thermostat Housing Assembly 90736A18
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