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Generic rubber belts often glaze and slip under the high torque of modern engines, but the Mack Accessory Drive Belt is built to maintain proper grip and tension in demanding service. The belt uses a reinforced internal cord structure that helps hold its length through repeated heat cycles, reducing stretch that can lead to noise or loss of drive. A durable outer backing is designed to resist oil mist and road grime commonly found in the engine compartment, helping the belt maintain its condition over time. Manufactured to OEM length and profile, the belt seats correctly in the pulleys and maintains proper drive without frequent tension adjustments. Replacing a worn belt with this genuine Mack 23717270 belt helps restore dependable accessory drive operation under daily operating conditions.
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