Mercury Outboard Lower Units

New and rebuilt replacement lower units (gearcases) for Mercury and Mariner outboards: Bigfoot, Optimax, 4-stroke, V6, Verado and TorqueMaster. Supplied by OBR Parts and Marine, rebuilt units get all-new bearings, seals and gears. Every lower unit includes a new water pump and comes with a 2-year warranty.

Before you order: send your model and serial number (from the tag on your transom bracket) so we can confirm shaft length, rotation and gear ratio. Email orders@hawkeyemarine.net or call 615-691-1433.

Looking for another brand? See all outboard replacement lower units.