Discover our upper gear housings for sterndrives. The upper housing, or upper gearcase, contains part of the gear train that transfers power from the inboard engine to the lower unit.
The role of the upper gear housing
The upper gear housing supports gears, bearings and shafts that change the direction of engine power towards the propeller. It operates under high load and must withstand both mechanical stress and the marine environment.
A sound upper housing helps ensure smooth power transmission and reduce vibration in the driveline.
When to replace an upper sterndrive housing
Cracks, strong corrosion, damaged gear seats, excessive play or persistent oil leaks can justify replacing the upper housing. In many cases, fitting a new housing is more reliable than attempting to repair a heavily damaged casting.
With a new or remanufactured upper gearcase, you restore proper bearing alignment and sealing, improving overall sterndrive reliability.
Upper housings selected by DAM Marine
As a specialist in sterndrive and outdrive parts, DAM Marine supplies upper housings compatible with many VOLVO and MERCRUISER sterndrives.
By choosing your upper gear housing from DAM Marine, you benefit from parts designed for marine use and a catalogue focused on propulsion systems.