I can't agree. Fords like aftermarket COPS just as much as motorcraft. I have had numerous 4.6s in town cars and 5.4s and 6.8s in trucks and NONE have ever had a COP replaced with OEM. The shorts time I had one fail was 8 years on yellow set from ebay. I get a whole set for 35-45. Way too easy to replace if need be to pay more.