20 percent of vehicles on the road today need a serpentine belt replacement. A worn belt can not only break without warning, it can slip and damage important engine accessories. Have your belt inspected and replace it if it is worn or damaged. You'll be glad you did. At Mission Hills Automotive in San Diego we install quality NAPA replacement parts. Give us a call at 619.299.9367 and let us help keep you safely and economically on the road.