Replacing part numbers: 514877, AK514877, HAAL517877, AK514877, which is a direct replacement for the old or broken one. Compatible with AL-KO Powerline T15-102 AK118507, compatible with AL-KO Powerline T13-102 SP-H AK118520, compatible with AL-KO Powerline T13-102 SP AK118506, compatible with AL-KO Concord T17-102 HD AK118240, compatible with AL-KO Concord T15-102 AK118246, compatible with AL-KO Concord T13-102 HD AK118148. Compatible with AL-KO Concord T13-102 AK110918, compatible with Sigma T14-102 SG AK118314, compatible with AL-KO Concord T17-102 HD AK110920, compatible with AL-KO Concord T20-102 HD AK118226, compatible with AL-KO Concord T18-102 AK118248, compatible with AL-KO Concord T15-102 HD AK118247. The lawn mower deck belt twin blade has an outer circumference of 2362 mm an inner circumference of 2311 mm a width of 12.5 mm and a thickness of 10 mm. Used to transfer power from the engine to the mower deck blades., Manufacturer: eMagTech