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(888) 312-8812 Login SignupBRAKE ROTOR
Every brake application depends on the pads clamping a flat friction surface, which the Mack Disc Brake Rotor provides at the wheel end. Its swept surface and hat section are machined to the factory thickness and diameter, keeping the replacement matched to the rotor it removes. The Mack 21538404 bolts to the same wheel-hub pattern used at this axle position, front or rear depending on the application. Replacing a warped or worn rotor restores an even contact surface across the pad sweep.
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