Please refer to your owner’s manual to confirm the OEM codes. Please double check that ALL OEM CODES listed on this item will fit your mower. Kits (even from the same brand) have different configurations. 42 Deck Rebuild Kit John Deere 100 Series. Fits John Deere 42 Lawn Tractor Models. John Deere 102, 105, 107S, 115, 125, 135. John Deere D100, D105, D110, D120, D125, D130. John Deere E100, E110, E120, E130. John Deere LA100, LA105, LA110, LA115, LA120, LA125, LA135. John Deere X105, X106, X110, X120, X125, X126, X145. Belt Drive – Size 103-3/4″ x 17/32″. Replaces OEM: John Deere GX20072, GY20570. Idler Pulley 80-91-071 – Size 3 5/8. Replaces OEM: John Deere GY20067, GY22172. Idler Pulley 80-91-068 – Size 5 7/32. Replaces OEM: John Deere GY20110, GY20629. 21″ Blades 3/8″ x 2-3/4. Replaces OEM: John Deere GX22151, GY20850, 50-3231. Replaces OEM: John Deere GY20454, GY20962, GY21098. (2) Spindle Pulley 80-91-095. Replaces OEM: John Deere GX20367, UC23728.