Its flexible construction allows the belt to withstand billions of topside and backside bends resulting in a long belt life Belt Material, Ethylene (EPDM). Effective Length, 105.77 in. Number of Ribs, 6. Outside Circumference, 106.5 in. Belt Type, Serpentine ACDelco Professional, premium aftermarket V-Ribbed Advanced Technology Belts serve as replacement belts for accessory belt drive systems (ABDS) and other serpentine belt applications. Serpentine Belt ACDelco Professional/Gold 6K1058 GM Replacement Belt ACDelco® 6K1058 - Professional™ Standard V-Ribbed Serpentine ACDelco 6K1058 Able to operate and accept misalignment in the accessory belt drive systems (ABDS) far greater than other serpentine belts ACDelco 6K1058 V-Ribbed Serpentine Belt Order now for same-day shipping on eligible purchases from , America's online marketplace for heavy duty parts Is the belt of choice by professional technicians, lasting 50% to 60% longer than retail belts (low priced belts sold at car part stores) They are designed using advanced manufacturing technology and premium EPDM rubber construction to provide customers with superior accessory belt drive systems (ABDS) and new-vehicle-type performance.