DESCRIPTION One new aftermarket replacement deck belt fits John Deere riding lawn mower models: LT133, LT150, LT155, LT160, LT166, LT170, LT180 – all with 38″ or 42″ decks. The classic V-belt achieves power ratings that significantly exceed most other belts available on the market. The compounds used to create these belts are matched to the specified power ratings. Classic V-belts offer distinct safety benefits on critical drives. Technical Information: Size A (1) 1/2″ X 114.5″ (2908.3) Replaces Part Numbers: M126536, 265-638