This says your engine is a 1995 MERCRUISER 5.7
Liter and your Engine Model Number is 457B100HS... And since you mentioned it above you have an Alpha Stern Dive combination to your engine accessories when looking up parts within the parts catalog from Mercruiser or here on Marine Engine.com.
Basically the following numbers just suggests what engine model types and stern drive combinations of that era (roughly between 1988-1995 in your case) may interchange parts and engine size wise though you always need to read the "notes" if available to help insure it fits your Engine type And "Stern Drive Model" type as certain things can fit/mount/run, etc. differently between what stern drive model you have of the two offered. 200/5.0L/LX 260/5.7L 350 MAG ALPHA/BRAVO
Your parts catalog part number looks to be 90-816596 PARTS MANUAL, 200/5.0L/LX 260/5.7L 350 Mag Alpha/Bravo
http://www.marineengine.com/parts/m...57l-gm-350-v8-19881995/0b525982-thru-0f600999
https://www.mercruiserparts.com/5-0lx-4-bbl-gm-305-v-8-1988-1995-0b
https://www.crowleymarine.com/mercury-outboard/1014.cfm?mdl=XA5NUC&q=457B100HS