John Deere R515221 V-Belt Assembly

The R515221 is a PK-section poly V-belt designed for engine fan drive applications on John Deere compact construction equipment. It features a 6-rib configuration with an effective length of 2480 mm (97.6 inches) and a pitch length of 2476.5 mm (97.5 inches). The belt is engineered to meet SAE J1459 standards for dimensional stability and power transmission efficiency. Construction utilizes high-strength polyester cord reinforcement for resistance to elongation and thermal degradation. The belt operates as a lower fan drive with air conditioning systems on specified loader models. Cross-references include John Deere superseded numbers A-R515221 and DZ118736, as well as aftermarket equivalents 975K6, 6PK2480, and major brand alternatives from Gates, Febi, and Dayco.