Suzuki OEM Lower Unit & Gearcase Parts

The lower unit houses the gear set that transmits power from the drive shaft to the propeller shaft, along with the bearings, seals, and shims that keep that gear set running quietly and without excessive backlash. It's also the part of the outboard most exposed to impact damage from underwater obstructions, and the most common entry point for water contamination if a seal fails.

Boat Max Online stocks genuine Suzuki OEM lower unit and gearcase parts organized into the subcategories below: bearings and seals, drive shafts and housings, gear sets and pinion gears, complete lower unit assemblies, shims and spacers, and propeller shafts and components. This page serves as the central hub for lower unit work; use the subcategories to find the specific component group for your service job.

As an authorized Suzuki Marine dealer, every lower unit component we sell is manufactured to Suzuki's factory tolerances for gear backlash, bearing preload, and seal fit, tolerances that directly affect how quietly and reliably the gearcase runs. Free shipping on orders over $149 to the lower 48 states.