OMC Cobra Stringer 4.3L Manifold Drain Cover Cap Plug 1978-93 5.0L 909829 200hp Mercruiser Propeller Looks like it says Atwood

Looks like it says Atwood A-16 on the base

Length: 13 1/14"

The Part Number for this Drive Shaft Midsection Exhaust Housing is 821447A12

Basically from the Mercury propeller guide

Item Details Removed from a 1960 Mercury 80hp 800EL 6cyl Direct Reversing (Serial Number: 1373684)

OMC Cobra Stringer 4.3L Manifold Drain Cover Cap Plug 1978-93 5.0L 909829 200hp Mercruiser Propeller Looks like it says AtwoodItem Condition and Notes: Good Condition Used from 1978 1993 Comes with Hose Clamps Please Inspect Pictures for condition Part #'s Manifold Cap: 909829, 0909829, 3852476 Yours should look like this one. Please ask if you are unsure if this part will work for you. Please send model and serial number. You will receive what is in the pictures. Please inspect pictures closely for condition. Purchase with confidence! Please contact me with any additional