Both Roy Gripskie & Sons plus Stens do Loncin filters
RGS original & Stens OEM
Neither of them have any stock at present ,I have 5 on backorder for the brand new engines I have fitted.
The thread is 3/4 -16 NPTP which is the same as nearly all of the other mower filters
All mower filters are so close in specifications that provided the threads are the same they can be safely interchanged.
Should be $ 14 to $ 20 depending weather it is original or after market
Tried the 4 major on line retailers & none of them have it is stock either.
The Stens parts were supposed to be here in December & RGS parts are supposed to be here end of the month
Note the word SUPPOSED
For engines out of warranty I fit B&S filters and what determines the actual size is the amount of space available.
B & S Short 492932S if height is tight
B & S Long 499532 if there is no height restrictions