This replacement idler gear is intended for ARRMA 1/5 8S center differentials and is supplied as MAKX019TS. It is a 19-tooth, M1.0 module gear manufactured from 20CrMnTi steel to align with the original center diff design and provide a direct replacement for the listed ARRMA machines.
Install this part when the factory idler is worn or if you need to restore correct gear engagement in the center differential. During service, inspect mating gears and bearing surfaces to confirm correct mesh and smooth rotation; accurate assembly keeps drivetrain durability and handling predictable under load.
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