Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Waterski Tow Hooks & Pylons My guess this is mid

My guess this is mid 80's but I can't find a specific reference from the manual on this particular flame arrestor

**As this is a quantity item

Pivot cap cover

0L 305CID 350CID 190hp 198hp 200hp 225hp 228hp 230hp 250hp 260hp 270hp 280hp 300 MerCruiser Alpha One 200hp 78779 TRS MIE Chevy GM 3704817 3719599

OMC 983874 / 0983874 4BBL Intake Manifold Assembly (1982-1993) GM 14095286 (Stamped)

Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Waterski Tow Hooks & Pylons My guess this is midItem Details UNKNOWN Chevy GM BBC 454 7. 4L 502 8. 2L V8 Valve covers possibly 370 400 440? I'm not sure if came off a MerCruiser engine or was something that was originally in a car as I don't see a MerCruiser identification sticker with a serial number. The black paint throws me off, so it might have been from something earlier like an early 80's TRS. These were mixed in with other valve covers I had, so it might have been an automotive application,