Volvo D13 Mack MP8 Tensioner - Premium Automatic Assembly - Replaces 21819687Keep your accessory drive performing at peak efficiency with this Premium Volvo D13 Mack MP8 Tensioner by FleetPro Parts & Tires. Engineered for the "New Generation" of heavy duty powerplants (20152026+), this automatic tensioner assembly is the latest supersession in the 21819687 series. Unlike standard spring only units, this premium assembly features an integrated hydraulic damper to neutralize the extreme vibrations of high torque diesel engines.
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