Replace belt numbers: with this A-GX20072 mower deck belt, you can replace belt part number GX20072, GY20570, M112230, M137547, M86248, GX20072, GY20570, 754-04219, 954-04219 and OCC-754-04219, a good replacement for your old belt Compatible with: this A-GX20072 replacement deck belt is compatible with Models of D100, D110, D120, D130, LA100, LA105, LA110, LA120, LA125, LA135, L100, L105, L107, L108, L110, L111, L118 (42 inch deck and 42 inch 3N1 deck), L17.542, L1742, X120, X145, 102, 108-14.5, 108-17HS, 115, 125 (42 inch deck and 42 inch edge deck), 135, 14.542GS, 1642HS, 17.542, 17.42HS, providing wide applications for you Belt size: the A-GX20072 riding mower deck belt is 1/2 inch/ 1.3 cm in width, 104 inch/ 264.2 cm in length, please make sure it’s the right size for you before purchasing How to install: if the center distance between the two shafts isn’t adjustable, you can insert a triangle belt into the wheel groove first; If it’s adjustable, just shorten the center