Mercury 221 (ST-90-221) outboard lower unit replaces 3.0L V6, 2.6L I6, and 1.7L I4 engines. Fits Verado models with 13, 15, or 20 spline drive shafts. Order now for a reliable gearcase replacement!
“OMC 117 ST1 Outboard Lower Unit, 1986-1993 dog clutch lower unit with counter rotation for twin engine applications, replaces OMC Cobra sterndrive, does not replace King Cobra or Joint Venture.”
“SE106 UPPER 1.47 (Replaces Mercruiser Alpha One) – 90-106-01D. Upgrade your outboard lower unit with this high-performance replacement part, featuring a 1.47 ratio and 9-9/16 new style input yoke, suitable for up to 300 HP engines.”
SE106 UPPER 1.62 106-01c outboard lower unit replacement for Mercruiser Alpha One, featuring 1.62 ratio and new style input yoke, perfect for boat engine upgrades and repairs.
“SE106 UPPER 1.62 w/ SHORT YOKE (Replaces Mercruiser Alpha One) – 90-104-01C. This outboard lower unit features a 1.62 ratio and short yoke, compatible with older inline 6 and 4 cylinder engines. Order now and get application assistance!” (149 characters)
SE106 UPPER 1.81 Ratio Replacement for Mercruiser Alpha One – 90-106-01B. This outboard lower unit comes with a 9-9/16 new style input yoke, perfect for marine engine replacement.
SE106 UPPER 1.81 w/ SHORT YOKE (Replaces Mercruiser Alpha One) – 90-104-01B. This outboard lower unit features a 1.81 ratio and short 8-1/8 input yoke, ideal for older inline 6 and 4 cylinder engines.
“SE106 UPPER 1.94 (Replaces Mercruiser Alpha One) – 90-106-01A. This outboard lower unit features a 1.94 ratio and comes with a 9-9/16 new style input yoke, perfect for your boating needs. Order now and get fast shipping!”
SE106 UPPER 90-104-01A outboard lower unit, 1.94 ratio with short yoke, replaces Mercruiser Alpha One, ideal for older inline 6 and 4 cylinder engines. (147 characters)
“SE116 UPPER 1.47 – 90-116-01D outboard lower unit replacement solution, featuring a 1.47 ratio that replaces the 1.5 ratio, perfect for Mercruiser Gen II applications.”
“SE116 UPPER 1.47 Ratio Replacement (90-116-01DM) for Mercruiser Gen II outboard lower unit, replacing 1.5 ratio with 1.47 ratio for improved performance.”
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