ORIGINAL AL-KO lawn tractor mower belt tensioner pulley Outer diameter (mm): 55 Inner diameter (mm): 12 Height (mm): 20 Weight: 52 g For models: AL-KO Farmer MH 4000 , Farmer MH 4001 R , Farmer MH 5000 , Farmer MH 5001 R , Farmer MH 5060 , Farmer MH 5060 R Part No.: 842414604 Original part No.: 414604 , 401418 , P109260005906 w