Westwood / Countax 6732 Double-Sided Timing Belt 

This fits 42" Contra-rotating deck (1991 - 1993)

For 1991models the part no is 22940200 (old part no: 2226); for diesel D1200 only, the part no is 22949800 (old part no: 2624)

For 1992 & 1993 models the part no is 228000100 (old part nos: 7509 & 8003)