I have a pallet of about 1100 of them, and they appear to be an excellent filter. The bypass valve has the proper opening pressure and is located at the far end of the filter. The filter media is plentiful, and appears to be high quality, though I have no test data to support it. The anti drainback valve is a simple rubber unit, but is very thick and looks as though it will do the job better than many. The gasket is a round O-ring just like Toyota, instead of the cheaper square ring used on lesser filters. The base plate and canister are made of very thick steel - most USA aftermarket filters are quite flimsy in this area.
I'll sell you a case of 10 for $12.00 + shipping.