MerCruiser 85785A2 Flame Arrestor 4.3L 5.7L V8 Carburetor Cover Top Zenith 4bbl Pulley The gear set here is

The gear set here is 43-55766 &  43-55778A3 (Sierra equivalent 18-2205)  (Also Equivalent to 43-55766A2 / 43-55766A3 as indicated in earlier parts manuals) 20-24 (tooth count) 1

Pivot Cap 0908505 / 908505

5 hp Outboard model # 1925-A serial# 3C-290923

Terminal Block: 510871

MerCruiser 85785A2 Flame Arrestor 4.3L 5.7L V8 Carburetor Cover Top Zenith 4bbl Pulley The gear set here isItem Details MerCruiser 4bbl Carburetor Flame Arrestor Stamped 85785 This could probably be used on a MerCruiser 488 engine as it should replace 41639A You just wouldn't use one of the tubes. 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 Carburetors Also used on some (V6 3. 8L & 4. 3L) & (V8 5. 0L & 5. 7L) (170hp 185hp 200hp 230hp 260hp 305 350 454) USCG