To my knowledge the only supplier is your local Finning dealer for Cat parts. You can use any type of filters, air cleaners, etc that will fit but actual parts? Finning I think is it....and there are no "cheap" Cat parts...or even "inexpensive". eg. cost me $40 for a replacement fuel cap for mine when someone stole the original. You know those padlock holes on your fuel and hydro oil caps? Use 'em.
