Replaces: Mercruiser: 12-815952, 815952
Engines: ALPHA ONE GEN II (1991+)
Replaces: 1547-9412A21
Ratio: 1.65:1/1.62:1 (24/24)
Engine: 6 Cylinders inline
3 and 5 days withing the EU, up to 10 days elsewhere.
Can be returned or exchanged, with conditions.