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trying to figure out what year my 4.3 ltr mercruiser is

jon f

New member
It has bolts on top of valve covers, thunderbolt 4 ignition on manifold ,12 or 13 bolts on intake, has mcm 4.3 Lh rotation on plastic air cleaner cover, carbeurated, the serial # are B957543 does this mean it's a 95
 
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it has B957543 that mean a 95 ?
No, Your engine Manufacture Date was on :01/28/1988.;)
Engine serial number: 0B957543 model number 443S100AS 1988 MERCRUISER W/ PS 4.3L ALPHA
Drive serial number: 0C302411 Model number 5010184AS MERCRUISER ALPHA 1.84:1
 
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