This is an Army Corps of Engineers, Huntington District, requirement to fabricate, test, and deliver one speed reducer and appurtenances to Willow Island Locks and Dam with an option to provide one speed reducer and appurtenances as described below. Gearbox delivery must be within 26 weeks after notice to proceed. New couplings (both halves) shall be supplied for each shaft. Half of each coupling to be installed by the Contractor on each shaft. All internal and external bearings are to be replaced. New External Pinion Gear to be supplied and installed on the new gearbox. The gearbox must be installed with a way for the gearbox to breathe. A site visit is recommended by the Contractor to ensure all components are compatible with existing features. Both the base and the option have the same requirements as detailed in these specifications. If the option is exercised, the Contractor shall provide a speed reducer that is opposite-hand orientation of the base as shown on the drawings. All other characteristics to remain the same as the base gearbox. Amendment 0002 was posted 9/19/2025 to extend the due date to 1:00pm ET on 23 September 2025.