Allison 6839821 Kit NASB (Bearing & Race Service Kit)
The Allison 6839821 Kit NASB is a genuine Allison transmission service kit designed for select automatic transmission applications. Commonly identified as a bearing and race kit, this service kit contains precision components used during transmission repair or overhaul to restore proper bearing support, shaft alignment, and internal drivetrain operation. Manufactured to Allison OEM specifications, the 6839821 kit is engineered to provide dependable performance and long service life in demanding commercial, vocational, industrial, and off-highway applications.
