Business ProfileforCylinder Heads International

I made a purchase from seller December 15 2023 for 2 rebuilt cylinder heads that advertised a 12 month warranty in the amount of $606.43 order # **************. I didnt install parts immediately because of financial issues plus items have 12 months warranty right. I was able to pay my mechanic to install parts 4 months later after installing parts mechanic informed parts are defective and leaking oil so I emailed seller twice with no response. Then emailed again as a new buyer and got aggressive response telling parts were 6 months old and return window was not available. I responded by telling seller parts werent 6 months old because parts were defective and I wasnt able to use them so emailed seller again about refund he said 30 days where up and I can only ship back to rebuild parts that are supposed to be rebuilt in the first place I asked if seller to cover shipping and mechanic fees for removal and got no response just like the first 2 emails I was ignored. Now Im stuck with this parts on my engine and when they are removed Theres miscellaneous items like gaskets,silicone,bolts ,time and labor that I have to pay for. These parts are not used by me only installed because turned out defective. I tried working with seller but he was too defensive about his quality control that I had no control over I paid for auto parts that didnt work