The product has passed 100% quality inspection before leaving the factory. Cummins serpentine belt 5120858 12PK2180. Automotive V-Ribbed Belt (Heavy Duty). Belt Material: EPDM. Cord Material: Polyester. Length 86 or 2180 mm Replacement Part Number: Replace 6122180 D8410006122180 12K858 K120858 4120858 858K12MK 860K12MK 4120858X 4120860X 5120858 D8410006122180 841006122180 K120858HD 4120858 4120860 12K858HDV 8L27179 25-120858 25-120858HD Galloparts 6122180 Serpentine Belt 12K858 D8410006122180 6122180 Replacement Belt Drive Belt D84-1000-6122180 For Kenworth Peterbilt Trucks - 12K858 Replacement Heavy Duty Truck Accessory Heavy Duty Truck Belt The serpentine belt is one of the most important engine system parts that powers the alternator, power steering pump, air conditioning compressor and water pump PACCAR SERPENTINE BELT D84-1000-6122180 12 RIB – Hartley Oil Company, Inc Easy to Install: Length 85., 8, Rib Quantity: 12, Top Width: 1., 66., Directly mounted. High-quality EPDM Rubber: The serpentine belt is made of high-quality EPDM rubber, which is durable, has good stretchability, is not easy to age, wear-resistant and corrosion-resistant, and has a longer service life than other types of rubber products