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    • Picture of Internal Gear

    66521 Terex Internal Gear

    Replacement for: Terex
    Part number: 66521
    SKU: TX66521
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    The Terex Internal Gear (part #66521) is an aftermarket replacement drivetrain component built to meet or exceed OEM specifications. The transmission and drivetrain transfer engine power to the wheels, and worn components are replaced to keep power delivery smooth. Confirm the correct part by part number 66521, or contact our team to verify fitment for your model.

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