- SBT Engine Rebuild Kit for Sea-Doo 300 Motors.
- Kit includes: .
- 4-stroke Counter Balance Shaft Bearing Set.
- 4-Stroke Main Bearings.
- 4-Stroke Rod Bearings.
- Internal Gasket Kit.
- SBT 4-Stroke Timing Chain.
- Oil Spray Nozzles (3).
- Piston/Ring Sets (3) STD.
Replaces OEM part(s): 420892738, 420950772.