Reference: A57 V Belt Top Width: 1/2 in Height: 5/16 in Length: 57 in Inside, 59 in Outside Equivalent to: 4L590, 4L-590, A57, 4L 590, A 57, A-57, Dayco AP57, BTQ-A57, A57 D&D Power Drive
Reference: A57 V Belt Top Width: 1/2 in Height: 5/16 in Length: 57 in Inside, 59 in Outside Equivalent to: 4L590, 4L-590, A57, 4L 590, A 57, A-57, Dayco AP57, BTQ-A57, A57 D&D Power Drive