Reference: A37 V Belt Top Width: 1/2 in Height: 5/16 in Length: 37 in Inside, 39 in Outside Equivalent to: 4L390, 4L-390, A37, 4L 390, A 37, A-37, Dayco AP37, BTQ-A37, A37 D&D Power Drive
Reference: A37 V Belt Top Width: 1/2 in Height: 5/16 in Length: 37 in Inside, 39 in Outside Equivalent to: 4L390, 4L-390, A37, 4L 390, A 37, A-37, Dayco AP37, BTQ-A37, A37 D&D Power Drive