Cat® Tensioners are designed to prevent belt slippage by applying the required amount of tension on the engine belt during engine operation. They play a vital role in the engine. If the tensioners fail, the engine can fail too. Tensioners allow the timing belt to move smoothly through the engine, powering various components. Cat® belt tensioners are tested for your rugged work environment.Application:Cat® Tensioners are used in belt driven systems. Consult your owner's manual or contact your local Cat® Dealer for more information.