MerCruiser 71904A1 71904 470 488 190 3.7L 4cyl Front Water Pump Impeller Cover Intake Manifolds Item Details This is from

Item Details This is from a 1964 Evinrude Speedifour 75hp V4 Model # 75453 C

(1983-1986ish)

I'm sure there is a replacement in the included kit if you want to replace this

Lower Cowl Rear Mid section Back: 309206

and may work for these: 763583

MerCruiser 71904A1 71904 470 488 190 3.7L 4cyl Front Water Pump Impeller Cover Intake Manifolds Item Details This is fromItem Details Removed from a MerCruiser 470 Used from 1976 1989 This is a stock photo you will receive one in similar or better condition. Parts Included Water Inlet Cover 71904A1 71904 Compatibility For the most part it seems these parts were used from 1976 1989 on pretty much all of the 470 models. 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Alpha One 470 4 cyl 165hp 170hp 180hp 190hp 3. 7L 3. 7LX 224CID 488 485 Sterndrive