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Brand new aftermarket Mercury gear case. This lower unit replaces 1976-2005 Mercury V6 2-Stroke 2.0, 2.4, or 2.5-liter gear cases with 4-3/4 bullet diameter.


We offer 1.87:1 and 2.1:1 gear ratios for 15", 20", and 25" midsections.


Stock lower units delivered immediately have a 3-year manufacturer’s warranty. Your modifications and our options including the 15” shaft (7-day lead time), lower water pick-ups, and nose cone (20-day lead time) could void the warranty.


Contact Mike Hill at for any questions, to secure a delivery date, and to discuss installation or shipping costs.

Mercury V6 Lower Unit, 1976-2005

SKU: LU-77
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