PO 175A42 LT

PFG270I04A

if you are not 100% sure this is what you need

and Compatible with Regent S 2691333-00

Lawn Mower Deck Belt

Proven Part 4172864-01#50 X 59 Pitch Chain Fits Classen 302-618 PO 175A42 LT#50 X 59 Pitch Chain. Compatible With Part Number 4172864 01. Fits The Following Classen Aerator Models: SA 30 SN 0000 Thru 0299 StandAire Pro, SA 30 S N 0000 0124 StandAire Pro, SA 30 S N 0125 to Present StandAire Pro , SA 30 SN 0125 and Up Pro Stand Aer SA 30A SN 0300 to 0420 Pro Stand Aer, SA 30A SN 0421 to 0447 Pro Stand Aer SA 30A SN 0448 Thru 0506 Pro Stand Aer, SA 30A SN 0507and Up Pro Stand Aer SA 30ACA SN 0000 to 0100 Pro Stand Aer, SA 30ACA