A majority of aftermarket parts are good, usable . . . many are excellent (better than oem). As time goes on, even the best companies seem to have some problems? Quality Control is an area of manufacturing that can always use improvement - and it's the most overlooked. Sales and Profitability First. Everything else sometimes comes Second. This company is as good as it gets. I had a problem, they addressed me courteously, via telephone. I got a return authorization and they were responsive to my questions and problems. Made in USA is superior in other aspects than just the part itself - this is one of them. I don't have a phone number for Taiwan or China or Bangkok, Thailand.