MerCruiser 4BBL Flame Arrestor 4.3L 5.7L V8 Carburetor Cover Barbron 571710AA Brackets Braces Levers Linkages It clearly is an oil

It clearly is an oil pan for some BBC application

Yours should have the same part number

but with normal wear/paint missing/some dings (see pictures)

Works with OMC Stern Drives Cobra & Stringer From 1968-1987 I

MerCruiser 4BBL Flame Arrestor 4.3L 5.7L V8 Carburetor Cover Barbron 571710AA Brackets Braces Levers Linkages It clearly is an oilItem Details MerCruiser 4bbl Carburetor Flame Arrestor Stamped Barbron Corp 571710AA I think the manual does reference this as 85785A2, but I know Zenith also made these with that stamping. My guess this is mid 80's but I can't find a specific reference from the manual on this particular flame arrestor For Quadrajet 4 Barrel Carburetors (Roughly 5 1 8" opening) Used from 1979 1986 on most GM V6 & V8 engines with 4 Barrel Rochester Quadrajet