AC Delco GM 1104060 Marine Distributor V8 EST Module Sierra 18-5484-1 350 454 Pulley - Crankshaft 0L 140hp 181cid (1982-some 1992)

0L 140hp 181cid (1982-some 1992) Should likely be similar to 987784 & 3850799 for the other 1992-1994 models

but they do look like they were replaced at some point as usually the stock cap was black on these

IA / IB / IC - All Models (1964)

1966 1967 1968 1969

AC Delco GM 1104060 Marine Distributor V8 EST Module Sierra 18-5484-1 350 454 Pulley - Crankshaft 0L 140hp 181cid (1982-some 1992)Part Number(s) Included Stamped 1104060 which is an AC Delco GM Part number J1171 (Marine Grade Rated) General Application Compatibility GM V8 305 350 454 502 using a common EST style ignition module I don't know a ton about this beyond what is stamped on it, but looks like a standard marine GM V8 distributor using the common EST Module and allegedly replaced the following: Crusader PCM Pleasurecraft Marine RA107039D Indmar 556024 OMC 3857400 Volvo