MerCruiser GM 165hp 4.1L 250cid Camshaft 3891590 OMC Stringer Chevy Timing Gear Internal Engine Parts this is just a stock

this is just a stock photo

0L Sterndrive 800

This is the Control Box for Mercury Outboard 1960's Direct Reversing 800 80hp 6cyl & 700 70hp & 600 60hp

Bleed Hose Check Valve Lower: 21-77561

Obviously they are used

MerCruiser GM 165hp 4.1L 250cid Camshaft 3891590 OMC Stringer Chevy Timing Gear Internal Engine Parts this is just a stockItem Details Removed from a 1970's MerCruiser Alpha One GM 4. 1L 165hp 250CID Used from 1968 1979 on virtually all OMC Stringer & Mercruiser 165hp sterndrive power plants. (both companies used the same GM blocks, but OMC used bolts rather than studs at the end of the crankshaft to hold the couplers on) MerCruiser Part Number 430 3161 Timing Gear 43 46745 GM part # 3891590 Yours should looks just like this. This was removed from a running engine. Some